Camel hump heads

Back to your original question, most people call the "camel hump" heads fuelies but as stated before, only the 461 were true fuelies. There are several closed chambered heads with different casting numbers and markings that will perform as well and a original fuelie head. You need to get the last 3 numbers from the casting numbers and …

Original Camel Hump Heads. I just finished up machining two sets of heads for a customer replicating camel hump heads for a Camaro restoration. He wanted high performance heads that looked just like the originals. I machined the logos off and then machined the inset by hand around a 3/8” thick steel guide. After the rough machining was ... Mar 9, 2003 · Camel Hump Heads Long ago, and I mean long ago, I knew all this stuff by memory. I believe the first camel hump head was on the 250HP or 275HP 327. Those heads had the 1.94 intakes. The 2.02's must have been on the 350HP or 365HP, and of course the Fuelies. I used to read Popular Hot Rod religiously and they had a project called Project X, a ... Re: 350 block 461 camel hump heads 11-25-04 06:02 AM - Post# 560210 In response to raws67 Hi..those heads are probably closer to 64 cc. This where it gets sticky..I was doing the same thing. I ended up with over a grand into a set of 186 heads. If you have the heads surfaced,new seats,new valves and springs and keepers, you will be over 350 …17921 posts · Joined 2007. #5 · Jul 17, 2020 (Edited) For the most part aftermarket heads come ready to accept both the 1955-86 head's intake bolt pattern and the 1996-2002 Vortec pattern. The real oddball is the 1987-95 pattern that looks like the 55-86 pattern but uses a different angle on the plenum bolts.The problem with adding bigger fuelie style cylinder heads like the 461 or 462 is that, while these heads increase airflow over a stock 283 head, this also increases the combustion chamber volume. Those double-hump heads generally have 64cc chambers. The stock 283 used a 58cc chamber.(Kitco News) - Kitco aficionados, it is now time to have your say in where you think gold prices are heading in the short-term.Read more on 'Kitco' Indices Commodities Currencies S...202 camel hump heads. I was really leaning toward a set of aluminum heads, but my cousin called and said he had a set of 202 camel hump heads off his 327. He has roller rockers to go with them. The 327 is dead and now he has a LT-1 which he is putting into his 67 camaro. I currently have a mainly stock 350 with 882 76cc heads (i …

Chevy Small Block Alternator Bracket - Fuelie or Camel Hump Heads with Long Water Pump (LWP) (283, 302, 327, 305, 350 & 400 CID) Mid-mount Chevy small block alternator bracket for V-belt applications with Fuelie heads that do not have bolt holes in the front of the cylinder head. Designed for use with OEM or CVF Racing pulleys.Based on the iconic “double-hump” or “camel-back” (fuelie) cylinder heads of the ‘60s and early ‘70s—including the famed 461 Fuelie heads—the DHC 175 castings are modern aluminum versions with …Apr 13, 2015 · Older heads needed 32-degrees and up to ensure a more complete burn. •Stock out-of-the-box Vortec heads have approx. 480 horsepower potential naturally-aspirated. Out of the box double hump cast heads produced from 25 to 40 horsepower less, depending on valve size. •Maximum valve lift on Vortec cylinder heads is .460-inch to .480-inch. I never saw one side with the camel hump and one side with a triangle on top. Tory ACES Member #1890 Team Chevelle Gold #288 1955 Chevrolet Bel Air Unrestored 15,000 Mile Survivor ... I've seen that before on numerous heads. One hump, one triangle. Definitely different than a double-hump. I never did look at the casting … DHC 175 heads are made from premium grade A356-T61 aluminum and have the exterior styling and straight spark plug holes that deliver the nostalgic appearance customers want. On the inside, 60cc CNC-profiled combustion chambers with blended bowl machining under the valves and small cross-section intake runners promote low-RPM torque increases ... SBC Head shoot out Part 2Heres one for the Old school boys!Stock Vortec Heads VS Stock Camel Humps Vs Ported 2.02 Camel Humps!Very good info, Real flow data!...Features like fast-burn combustion chambers, high-velocity ports, large diameter valve springs, and positive stop valve seals bring the vaunted camel hump heads into the 21st Century. Save yourself the hassles of hunting down original GM 3782461, 3782461X or 3890462 castings, only to find out they can't be saved.

As Doug pointed out there are 3 different casting numbers that have the double hump outside identification. If you look at the casting numbers and date codes on the heads you can get a better idea of the original application. The 291 heads are later 60's and generally are high performance. The 462's were used on early to mid 60's full size …There is a company out there that makes aluminum heads with the old double hump casting on the ends. Might be worth looking into. 1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes.ARP Head Stud Kit fits Subaru WRX STi EJ20 & EJ25. Find many great new & used options and get the best deals for 461 X Camel Hump Cylinder Heads at the best online prices …Any camel hump head is a candidate for a street engine build. But the key is what you have to spend to make them useable. A lot of them are cracked in the exhaust seat area. If you find a set of original stock heads, you'll need a valve job, exhaust seats, valve guides - maybe screw in studs/guide plates.

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item 5 OEM GM 3782461 Cylinder Heads Small Block Chevy Camel Hump 1965-66 2.02 1.60 OEM GM 3782461 Cylinder Heads Small Block Chevy Camel Hump 1965-66 2.02 1.60. $800.00 +$110.00 shipping. item 6 Matched Pair 3890462 SMALL BLOCK CHEVY FACTORY HIPO DOUBLE HUMP CYLINDER HEADS.Camel Hump head porting and setup. by postal123 » Sun Jun 11, 2023 5:24 pm. Gents, I'm just a hobbyist and this is my 2nd thread here and 2nd attempt at head porting. I bought a '65 K10 with 8k "rebuilt" 357 SBC. Flat top 4-eyebrow pistons, HFT cam measured 252/262, 202/214 109 ICL and 114 LSA. 492 angle plug heads, performer …Rather, the culprit is the improper selection of a combination of parts. Last month, we said we'd swap cylinder heads to see if the stock GM camel hump castings were keeping DM from making more power.68Chevele. 6066 posts · Joined 2019. #2 · Jul 6, 2019. Well Vortec heads are better out of the box over the old camel hump heads. They can be had cheap now but you have to check them for cracks prior to doing any work on them. L-29 461 BBC 11.10@118mph 9-30-22. 10.65@125mph 406 with home ported Dart 215 heads.

Rather, the culprit is the improper selection of a combination of parts. Last month, we said we'd swap cylinder heads to see if the stock GM camel hump castings were keeping DM from making more power.A hump on the upper back between the shoulder blades is an area of fat accumulation on the back of the neck. The medical name of this condition is dorsocervical fat pad. A hump on ...item 8 OEM GM 3782461 Cylinder Heads Small Block Chevy Camel Hump 1964 2.02 1.60 Fuelie OEM GM 3782461 Cylinder Heads Small Block Chevy Camel Hump 1964 2.02 1.60 Fuelie $895.00 +$88.85 shipping Cast from premium quality aluminum that shaves 40 lbs. off the nose of your car vs. heavy iron heads. Comes completely assembled with no accessory bolt holes, just like the original heads. Improved port/chamber shape for better performance with the 3-angle machined valve job that promotes better flow, especially at low-to-mid lifts. They actually ran very well. The 327-300 engine used the double hump heads, with larger 1.94" and 1.5" valve size, larger port intake manifold with larger Carter AFB carb, and larger dump ram's horn exhaust manifolds. The basic shortblocks of the two 327s were basically the same. More than likely your block number is 870.Oct 13, 2020 · Re: camel hump vs vortec. by ProPower engines » Tue Oct 13, 2020 7:50 pm. No comparison. The vortec heads are better in every way unless you have free double bump heads and have to pay for the vortec's. If you flow the early GM heads and flow the vortec heads and compare the numbers. The big difference is in the chamber shape. May 18, 2009 · 3991492. Jump to Latest Follow. 30K views 10 replies 7 participants last post by 2drpostL79 Aug 23, 2009. G. gregmontgomery Discussion starter. 203 posts · Joined 1999. #1 · May 18, 2009. can anyone give any info. on these heads .3991492 is the numbers are these good performance heads.thanks. Like. Do you know what a Phillips head screwdriver looks like? Find out what a Phillips head screwdriver looks like in this article from HowStuffWorks. Advertisement The Phillips head sc... DHC 175 heads are made from premium grade A356-T61 aluminum and have the exterior styling and straight spark plug holes that deliver the nostalgic appearance customers want. On the inside, 60cc CNC-profiled combustion chambers with blended bowl machining under the valves and small cross-section intake runners promote low-RPM torque increases ... I researched the best head-porting tactics for small-block Chevy double-hump heads, and iron big-block Chevy rectangle-port heads. A quick search educated me that a set of later model Vortec heads are a better option. Additionally, I found a wealth of info on the steps necessary to improve the Vortec with minimal porting. As one online ...

DHC 175 heads are made from premium grade A356-T61 aluminum and have the exterior styling and straight spark plug holes that deliver the nostalgic appearance customers want. On the inside, 60cc CNC-profiled combustion chambers with blended bowl machining under the valves and small cross-section intake runners promote low-RPM torque increases ...

General Motors identifies its small-block Chevy cylinder heads with both casting numbers and casting marks. "Double-hump" heads were found on many of its high-performance engines in the 1960s and early 1970s. They were manufactured with larger intake and exhaust port volumes and valves for the period, and engines equipped with them had output ...For instance, the camel hump symbol (also called double hump) can be found on 461, 461X, 462, and 291 casting heads. The 492, 292, and 186 heads have a slightly different looking camel hump. These heads may have come with 1.94/1.5-inch valves or they might have been made with 2.02/1.6-inch valves.Chevy Small Block Alternator Bracket - Fuelie or Camel Hump Heads with Long Water Pump (LWP) (283, 302, 327, 305, 350 & 400 CID) Mid-mount Chevy small block alternator bracket for V-belt applications with Fuelie heads that do not have bolt holes in the front of the cylinder head. Designed for use with OEM or CVF Racing pulleys.Chevy Small Block Alternator Bracket - Fuelie or Camel Hump Heads with Long Water Pump (LWP) (283, 302, 327, 305, 350 & 400 CID) Mid-mount Chevy small block alternator bracket for V-belt applications with Fuelie heads that do not have bolt holes in the front of the cylinder head. Designed for use with OEM or CVF Racing pulleys.SBC Head shoot out Part 2Heres one for the Old school boys!Stock Vortec Heads VS Stock Camel Humps Vs Ported 2.02 Camel Humps!Very good info, Real flow data!...biggest cam for 327 and double hump heads, flat top pistons. so i got a fresh 327 with flat top pistons and 462 camel hump heads all good, just need a cam. Im thinking around 282-286 degrees of advertised duration and around 470-500 lift, if i can go more duration i will. Ive read other threads of people recommending somewhere around …Camel hump heads. Good evening to all. I am finally back into hotrodding, and have a couple of questions for whoever can answer them. I have a '59 El Camino that my uncle put a 327 in from a 1965 impala. I have since pulled the engine out and I am begining the rebuilding process. I noticed that the heads had the unique camel hump stamped on the ...Are you saying that the performance of my engine will not be as good by using 202/160 camel heads on the 283 bored 80 over. Im just looking to get about 300-350hp, that will be good enough for me. 84 Z28 Camaro Convertible 283 bored 80 over, 202/160camel hump heads, Edelbrock RPM Maniford, Holley 670 Avenger Carb, …Sorry 462 camel hump casting hoarders, Trick Flow is bringing back an aluminum version of the classic camel or double hump heads for the Chevrolet small block. If you are not familiar with the ...Dec 23, 2017 · Based on the iconic “double-hump” or “camel-back” (fuelie) cylinder heads of the ‘60s and early ‘70s—including the famed 461 Fuelie heads—the DHC 175 castings are modern aluminum versions with straight spark-plug locations and improved 60cc combustion chambers.

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If you find a set that are ready to go and need no work, they are a good head. With port work, 2.02/5 & 1.60 pro flow valves they can be a great head. Now if you do this and the cost of all the machine work and parts. A STK Vortec head for under 600.00 a pair will greatly out perform these heads.Made from premium grade, lightweight A356-T61 aluminum, DHC™ 175 heads feature the exterior styling and straight spark plug holes that deliver the nostalgic appearance of the original factory performance 186, 291,461,462 "double hump" or "camel back" castings that customers want.Made from premium grade, lightweight A356-T61 aluminum, DHC™ 175 heads feature the exterior styling and straight spark plug holes that deliver the nostalgic appearance of the original factory performance 186, 291,461,462 "double hump" or "camel back" castings that customers want.3731 posts · Joined 2005. #12 · Aug 7, 2007. My Son's 327 ended up at 10.1-1 with flattop 2valve relief pistons in a zero decked block and 61cc 462 cammel hump heads ported to 170cc's, with an extrme energy solid lifter 268 cam, rpm airgap, 650DP, and 1 5/8 headers it pulls really strong (for being only 331CI) to 6500.Chevy 3917291 Heads 302 327 350 Double Hump Pair Camel Hump SBC Heads 291 D 10 7. Opens in a new window or tab. Pre-Owned. $700.00. delcoenginesandcomponents (230) 100%.Unless your doing a restoration that requires camel humps your better off with aftermarket heads. Even a set of mildly worked vortec heads are better than camel humps. I would go with the Dart heads. You'll be much happier. Heads have advanced incredibly since the 60's. 71 Nova - LQ4/4L80E, 12 bolt posi 4.11 rear - SOLD.But this head uses a smaller intake port to impart more lower end torque that goes with the lower gas consumption RPMs. This came at the cost of top end power, so these heads just aren't competitive with the Camel Humps unless they are professionally ported. The L31 Vortec comes out of the LT-1 and 4 reverse coolant heads of the early …Camel hump heads are way over rated in this day and age. You could gain a little more power from them by porting and cleanup. I ported my Sportsman IIs using a high speed steel cutter on a Dremel tool. It took forever, but it worked. I guess it depends on how confident you are with a Dremel.-You could take the sharp edges off of the short turn ... ARP 250-4202 Ford Diesel Head Stud Kit. $526.59. Trending at $549.00. Find many great new & used options and get the best deals for Camel+Double+Hump+Heads+Cylinder+GM+Casting+3917291 at the best online prices at eBay! Free shipping for many products! Chevy SBC Assembled Aluminum Camel Double Hump 461 Cylinder Head (16) Cylinder Head Style: Assembled. Material Type: Aluminum. Finish: Natural. $640.99 /each. $732.00. Add to Cart ... In this video, Joe and Wyatt discuss the features that bring the vaunted camel hump heads into the 21st Century. Gen 4 LS Engines - Junkyard LS Swap ...stinger460. lets not scare the man. 400 sbc's can be cooled and not over heat on the street. here's how. drill steam holes in those heads if you really plan on using them. also while having the heads off time to do some plumbing. on the block between the two center bore there is a plug in the water jacket on each side. remove them, then coming ... ….

Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! In this video, Joe and Wyatt discuss the features that bring the vaunted camel hump heads into the 21st Century.Chevy Small Block Alternator Bracket - Fuelie or Camel Hump Heads with Long Water Pump (LWP) (283, 302, 327, 305, 350 & 400 CID) Mid-mount Chevy small block alternator bracket for V-belt applications with Fuelie heads that do not have bolt holes in the front of the cylinder head. Designed for use with OEM or CVF Racing pulleys.UPGRADED SBC Camel Hump Cylinder Heads 461 STAINLESS VALVES HARDENED SEATS. Opens in a new window or tab. New (Other) $1,199.99. streetrodshq (6) 100%. or Best Offer +$199.99 shipping. New Listing SBC Double Hump Camelback Head 1966 Corvette Chevy 461 Casting 1.94 62cc. Opens in a new window or tab.A controversial display of “shrunken heads,” or tsantsa, made by the Shuar and Achuar people of Ecuador and South America have been removed from Oxford’s Pitt Rivers Museum. After ... Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! Also known as "fuelie" heads, the 3782461 castings were used on many legendary Chevrolets from 1961-1967. Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet. Nostalgic appearance—check. Modern performance—check. The best of both—checkmate! Trick Flow’s DHC 175 cylinder heads give small block Chevy enthusiasts a new performance option. No longer will anyone have to choose between vintage looks or modern cylinder …The problem with adding bigger fuelie style cylinder heads like the 461 or 462 is that, while these heads increase airflow over a stock 283 head, this also increases the combustion chamber volume. Those double-hump heads generally have 64cc chambers. The stock 283 used a 58cc chamber.3782461 327, 64-66 Double humpers or Camel hump 161/62cc port 3782461X 60-63, Larger intake runners, 172/64cc port 3991492 350 LT1, 70, 64cc, straight plug, camel hump 3991492 Over counter, strt or angle plug, 64cc, 157/62cc ports ... the larger valved and pocket ported ‘Camel Hump’ style heads are just fine. ...Cast from premium quality aluminum that shaves 40 lbs. off the nose of your car vs. heavy iron heads. Comes completely assembled with no accessory bolt holes, just like the original heads. Improved port/chamber shape for better performance with the 3-angle machined valve job that promotes better flow, especially at low-to-mid lifts. Camel hump heads, Made from premium grade, lightweight A356-T61 aluminum, DHC™ 175 heads feature the exterior styling and straight spark plug holes that deliver the nostalgic appearance of the original factory performance 186, 291,461,462 "double hump" or "camel back" castings that customers want., Aug 19, 2007. 43. hamilton, ontario. hi i picked up a set a double hump heads the casting number is 3890462 for free but need to be reconditioned. are these any good and could i get somke help with info like what they were on and sizes also are they worth anything? thanks for any help, chad_48. Oct 17, 2007. #2., Flow characteristics, on double hump heads are very limited, even with drastic porting they wont flow much past .550 lift with big inch sbc. Also if you run much more than 350-360 ci your really limiting the power potential, on 283-327 they run awesome and if are in good shape can be freshened up reasonable priced., GM used a different rating for power..that 151 cam in todays world is more like 290-300hp out of a 350.... Probably the same mentality that actually thinks camel hump heads are great, too. Same with buying "big" parts not for a build later on;so in the meantime you got a pig, Compatible with Camel Hump/Fuelie Heads Includes Grade 8 Hardware Pump Rotation : Standard (Not Included) Reverse Rotation (Included) Reverse Rotation (Included) Standard (Not Included) Standard (Not Included) Product information . Technical Details. Manufacturer ‎CVF Racing ..., Features like fast-burn combustion chambers, high-velocity ports, large diameter valve springs, and positive stop valve seals bring the vaunted camel hump heads into the 21st Century. Save yourself the hassles of hunting down original GM 3782461, 3782461X or 3890462 castings, only to find out they can't be saved. , One-humped and two-humped camels are two entirely different species. The two-humped species is the Bactrian camel, while the one-humped species is the dromedary. Bactrian camels ar..., Chevrolet Small Block Camel Hump Heads (Small Camel Humps) In this video we get a tad bit confused over the Casting Numbers Watch me struggle to figure this ..., Step back in time with Speedway Motors’ modern reproduction of the iconic Chevy 461 double-hump cylinder heads, now cast in lightweight aluminum. Also known as “fuelie” heads, the 3782461 castings were used on many legendary Chevrolets from 1961-1967. Their all-new cylinder head casting is a modern take with all the old-school looks you ..., 28 posts · Joined 2008. #1 · Dec 18, 2008. I've got a bare set of camel hump heads with casting number 3782461 and 1.94 valves. They are not drilled in the front for brackets and have no cracks. I bought these heads in 1987 for a song and I've kept them for all this time planning to use them one day. I keep reading about all the great …, Trick Flow Specialties DHC 200 Aluminum Cylinder Heads combine the classic looks of 1960s-era ‘camel hump’ cylinder heads with CNC-ported airflow capabilities to give a small block Chevy a big dose of horsepower. You can see the heads for yourself at the Trick Flow Specialties booth #23011 in the Race and Performance Section, Central Hall., Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! Also known as "fuelie" heads, the 3782461 castings were used on many legendary Chevrolets from 1961-1967. , There are a lot of castings to choose from when running the Chevy Double Hump heads. In this video we discuss what is the best casting to start with for you..., Unless your doing a restoration that requires camel humps your better off with aftermarket heads. Even a set of mildly worked vortec heads are better than camel humps. I would go with the Dart heads. You'll be much happier. Heads have advanced incredibly since the 60's. 71 Nova - LQ4/4L80E, 12 bolt posi 4.11 rear - SOLD., The “double hump” or “fuelie” heads have been around since the 1960’s. They are still used in a variety of applications. We have a good supply of used ‘186 & ‘492 heads available …, 17921 posts · Joined 2007. #5 · Jul 17, 2020 (Edited) For the most part aftermarket heads come ready to accept both the 1955-86 head's intake bolt pattern and the 1996-2002 Vortec pattern. The real oddball is the 1987-95 pattern that looks like the 55-86 pattern but uses a different angle on the plenum bolts., The "041" head was a 1969-1970 high performance head, with the same exact performance characteristics as both the "186" and "187" Camel (double) Hump heads. It also is a 64 cc combustion chamber. It was available from the factor with both 1.94/1.5 and 2.02/1.6 valves, just depended upon which vehicle GM put them in., The actual CFM flow numbers would depend on if any work was done to the heads, and the quality of the valve job I did read one test on flow #'s for a 461 (stock, untouched), the #'s were as follows: .050" 1-38.9, E-20.9, biggest cam for 327 and double hump heads, flat top pistons. so i got a fresh 327 with flat top pistons and 462 camel hump heads all good, just need a cam. Im thinking around 282-286 degrees of advertised duration and around 470-500 lift, if i can go more duration i will. Ive read other threads of people recommending somewhere around 268 ..., Mar 2008. Posts. 952. i think a lot of people that think that the camel humps are better simply because they flow more air or make more peak horsepower need to look at the bigger picture. the vortecs are more efficient over a broader rpm range, and require less timing and octane to get the job done., Trick Flow Specialties DHC 200 Aluminum Cylinder Heads combine the classic looks of 1960s-era ‘camel hump’ cylinder heads with CNC-ported airflow …, A big block Chevy (BBC) or small block Chevy (SBC) head is readily recognized by most, as are MOPAR Hemi heads, small block Ford (SBF) heads, and …, Mar 31, 2015 · 67/68 Camaro's were short water pump engines that did not require accessory holes in the heads. 69 Camaro's were long water pump engines that only required one bolt hole in the passenger side head. (even though each head had 3 drilled and tapped holes on both ends of the head. Vintage Air will set you up with brackets for either style. , Aug 30, 2009 · These heads got their nickname because of the raised identification shape on the each end. It's two half-ovals connected by a straight bar-most easily described as "two humps." Some of these... , Mar 9, 2003 · Camel Hump Heads Long ago, and I mean long ago, I knew all this stuff by memory. I believe the first camel hump head was on the 250HP or 275HP 327. Those heads had the 1.94 intakes. The 2.02's must have been on the 350HP or 365HP, and of course the Fuelies. I used to read Popular Hot Rod religiously and they had a project called Project X, a ... , Dromedary camels have one hump, while Bactrian camels have two humps. Dromedaries live in the deserts of the Middle East and north Africa. Bactrian camels live in northeastern Asia..., 28 posts · Joined 2008. #1 · Dec 18, 2008. I've got a bare set of camel hump heads with casting number 3782461 and 1.94 valves. They are not drilled in the front for brackets and have no cracks. I bought these heads in 1987 for a song and I've kept them for all this time planning to use them one day. I keep reading about all the great new ..., 17921 posts · Joined 2007. #5 · Jul 17, 2020 (Edited) For the most part aftermarket heads come ready to accept both the 1955-86 head's intake bolt pattern and the 1996-2002 Vortec pattern. The real oddball is the 1987-95 pattern that looks like the 55-86 pattern but uses a different angle on the plenum bolts., Mar 31, 2015 · 67/68 Camaro's were short water pump engines that did not require accessory holes in the heads. 69 Camaro's were long water pump engines that only required one bolt hole in the passenger side head. (even though each head had 3 drilled and tapped holes on both ends of the head. Vintage Air will set you up with brackets for either style. , Trick Flow Specialties DHC 200 Aluminum Cylinder Heads combine the classic looks of 1960s-era ‘camel hump’ cylinder heads with CNC-ported airflow …, 962 posts · Joined 2004. #2 · Mar 22, 2009 (Edited) 383 with camel hump heads. You're going to be up there on the compression ratio, and Hi-Test fuel will be a requirement. Be sure and get your "quench" set right from the start, somewhere in the area of .035 to .045. 7., Colleges and new high school graduates have what I think is a strange idea. They think every freshman is an ad Colleges and new high school graduates have what I think is a strange..., Hello, I have the following: 462 camel hump heads. 355 C.I. small block chevy. flat top pistons, 10:1 compresion ratio. camshaft: 106 degree LSA, 250 degree duration at .050". 165-180 cranking PSI in all cylinders. Quadrajet, stock intake, exhaust and heads, no porting (it is on a circle track street stock and those are the rules).