Holley carb date codes

C1 & C2 Corvettes - WTB Date code Holley for 327 L79 1967 - Hello friends --- need help once more ... I have the whistle back through the carb at idle - goes away on acceleration - happens when motor is at operating temp - 327 L79 67 date code for Feb of 67 Im thinking just to go ahead and buy a replacement (holley)...

Holley carb date codes. General Q & A - holley 750 marine carb # R84018 Date code 2048 - (# R84018 Date code 2048 ) Is a this junk carb?? Does not look like a standard holley. We rebuild mine and still have problems. It pops and backfires in the mid-range. Vacum at idle is only 10-15 psi. Is vacum a problem? Is the power valve the problem?

1969 GT500 Carburetor C9AF-9510-N Holley 735 CFM; List # 4280 - automatic cars As far as price...try eBay. Arbour88 . Arbour88 Team Shelby Member #531 A few mods. ... and the correct fuel lines etc... Also, I would like to know what the date code on the carb translates to... Thanks for the help . Save Share. Like. Status Not open for further ...

F. FOXBROSRACING. 201 posts · Joined 2010. #2 · Feb 21, 2013. as close as 3 weeks to build date, as far as 6 months before. holley built there carbs in batches. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.Original Holley DZ carb dated 874 or 4th week July 1968 for a late 68 or early 69Z. I had gotten this several years ago and it was in pieces missing, some choke items and the 5583 primary block it does have the original 4519 secondary block and I have found a NOS 5583 block and bought the missing choke pieces. this will need rebuilding but better to be restored as the new block does not match ...163 means it was made in 1971, 6th month, third week. Still worth 2-3 hundred or more for a good core, even though it is a late date. 4296 was originally used on 69 L88 and ZL-1 427's. Jon N. ~ The person who doesn't listen to the media is the best informed.Cataclean - Fuel and Exhaust System Cleaner. Motorcycle and Powersports. View AllFind many great new & used options and get the best deals for Holley 4777 Carburetor Date Code 212 Used with Electric Choke at the best online prices at eBay! Free shipping for many products!

This carburetor number was originally listed for the 1965 Z-16 Chevelle (375hp/396), the date will indicate if an original issue Z-16 carb (rare) or the much more common one sold over the parts counter to half of the Chevy enthusiasts in the US. My experience with MANY dyno pulls on a 406 CID SBC was it was hard to improve on as delivered over ...Categories/ Plumbing AN Fittings and Hose. Vapor Guard. Earls Classic Hose and Hose Ends. Speed-Seal and Speed-Flex. Hardline. Also in Plumbing AN Fittings and Hose. Adapters. All Hose Groups. Application Specific Parts.I decode it as a service replacement Holley for a 396 375 hp (Z-16) Chevelle. The date code is 1966 Jan 4th week. These were sold over the parts counter and was a popular replacment carb in the late 60s.Aug 6, 2013 ... Norm walks you though how to properly adjust the secondary circuit on a Holley 4 Barrel Carburetor. Vacuum Secondaries or Mechanical ...One of the most trusted carburetors of all times -the 1850! Its 600 CFM of airflow, vacuum secondaries, single fuel inlet and mechanical choke makes it amazingly universal. The 1850SA is constructed from aluminum which compared to its zinc counterpart equates to a weight savings of 40%! Being aluminum also means it will hold its shine and can be hand polished for a custom look! Don't trust ...

Date code type Code meaning Example Components typically found with this type of date identification; A: Alpha-numeric 2 digit code: Month & Year: E9 = May 1969: Carter carburetor base, Carter Fuel pump, Viscous fan drives, drive shafts: B: Single digit: Year: G = 1971: Engine identification pad: C1: Two digit: Month & Year: 71= 7th month (July ... We would like to show you a description here but the site won't allow us.Jul 13, 2022 ... this is a brief look of the tail of two @HolleyPerformance Dominator Carbs. We take a look at the 4575's The original Dominator vs my New ... Date code type Code meaning Example Components typically found with this type of date identification; A: Alpha-numeric 2 digit code: Month & Year: E9 = May 1969: Carter carburetor base, Carter Fuel pump, Viscous fan drives, drive shafts: B: Single digit: Year: G = 1971: Engine identification pad: C1: Two digit: Month & Year: 71= 7th month (July ...

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Re: 1969 L78 3959164-GE Holley date code. 1A3 = 3rd week of November, 1971. It's a service replacement.Carburetor 2 Barrel for Ford 2150 W/Climate Choke For Many V8 Engines 302 351 US. Find many great new & used options and get the best deals for Holley List 3310-1 4 Barrel 780 CFM Carburetor Date Coded 3443 at the best online prices at eBay! Free shipping for many products!i'm trying to date a holley,are the 4 numbers under the list the date code?mine reads-4432-thanks any help bryan dfm. in this thread in this sub-forum in the entire site. Advanced Search Cancel Login / Join. What's New; Forum Listing; ... holley carb. Jump to Latest Follow 1 - 8 of 8 Posts. B ...C1 & C2 Corvettes - Holley 2818 Date Code - I have two questions here. I'm found a Holley 2818 carb dated 4B3 for my 65 327/350 that has a F1215HT pad stamp. First, when a week number is determined, does it matter if it is a full or partial week? Looking at the December 1964 calendar below, is it safe to assume that...Have a Holley 4555 carb date code 051 off of my 70 LT1 vette that no longer has the original block so this carb needs to go to someone that needs it for a restoration. Carb has all its original parts such as the metering blocks, fuel bowels ect. All moving parts move freely, it has been sitting along time so it will need a kit. $750 includes ...163 means it was made in 1971, 6th month, third week. Still worth 2-3 hundred or more for a good core, even though it is a late date. 4296 was originally used on 69 L88 and ZL-1 427's. Jon N. ~ The person who …

First off the carb is a Holley 780 cfm could someone help de-code the numbers a little further? 3959164-GE List 4346 952 I have many more questions regarding this car that I will post. The fuel line size, rectangular port heads and the fact the car was Oct-Nov 69 build date. But let's start with the carburetor. thanks!The top of the stamp shows the GM part number 3886101E1, the midportion is the Holley list number, 3247. The DATE CODE which you are asking about is the bottom area, on mine it is 612. If yours has a 4 digit stamp there, it is not original, it is a service replacement built later. The 3 digit code as in my 1966 Holley identifies 6 (the year ...Find many great new & used options and get the best deals for Holley 1850 - 4 Carburetor W/ Date Code 0157 at the best online prices at eBay! Free shipping for many products!Footage taken from Holley Carburetor Installation & Tuning DVD ... Carburetor Installation and Tuning carburetor tuning and ... Bradley Iger. 05/02/2024. tech. LS Fest LS Fest West 2024 LS Fest West. LS Fest West 2024: Dyno Challenge. 05/01/2024. Events. Join the Holley Family. Stay up to date with the latest releases, events, promotions and ...May 26, 2011 · LOCATING THE LIST NUMBER: The List number for a Model 2010, 2300, 4010, 4011, 4150, 4160, 4165, or 4175 carburetor can be found on the right side of choke air horn. The List number for the 4500 can be found on the top of the main body casting. Below the list number is a date code that will contain no more than four (4) digits. 072. 0=2970. 7=July. 2=2nd week . 1970 Z28 . 032. 0=1970. 3=March. 2=2nd weekMay 26, 2011 · The List number for a Model 2010, 2300, 4010, 4011, 4150, 4160, 4165, or 4175 carburetor can be found on the right side of choke air horn. The List number for the 4500 can be found on the top of the main body casting. Below the list number is a date code that will contain no more than four (4) digits. See Figures below. Carburetors built for performance! The Carburetor is the foundation of our expansive line of fuel system components! Whether you're looking for a 4 Barrel Double Pumper, Vacuum Secondary, Dominator, or 2 Barrel racing carburetor, we have a solution for you! From NASCAR To Your Car, NHRA to boats, Holley carburetors build power and perform out of the box!W Series (W-0, W-1, WA-1, WE, W-2) - (1932 – 1949)(1 barrel) triangular brass tag; also, code number stamped under base. W Series ... It is NOT a TSX-651. The center line is a date code! Marvel/Schebler models are as follows: ... The color used was a code to help identify the carburetors. A few times in carburetor cleaner, and the color ...

Most of the individual parts on your Camaro have a date code to indicate the time of manufacture. Here are some of these codes. You will also find casting and parts codes on many of these parts. ... CARBURETOR, HOLLEY. 972: Year: Month: Week: 7 - 1967 8 - 1968 9 - 1969: 1 - Jan thru 0 - Oct N - Nov D - Dec: 1 - 1st week 2 - 2nd week 3 - 3rd ...

It originally came on a 1965 Z16 Chevelle. It was made the first week of May in 1970. A foreign car bought is an American job lost! Correct, this is for a used Holley carburetor List 3310. It has the GM part number on it of 3878261 EH which is correct for the 1965 Chevelle Z-16 with the 396 engine. However the date code on the carb is 051 …Decoding the Ford Holley date code. Holley Carburetors with 3 digit Numeric date codes. This sample code is from a 1969 BOSS 302 carburetor with date code 951. 9 51. Year. 9 = 1969 . 0 - 9 9 5 1. Month . 5 = May . 1 - 9 = January through September . 0 =October A =November B =December 95 1. Week . 1 = 1st week .Ok, I have 2 carbs, holleys, and under the list #'s is as follows: first carb: 1374. sec carb: 2502. These should be the date codes, but im used to seeing 3 digits. So if you can help, I would be happy. Thanks. 1374 = 137th day, year ending in 4, like 74, 84, 94. 2502 = 250th day, year ending in 2, like 82, 92 etc.fast68 Discussion starter. 2096 posts · Joined 2005. #1 · Jan 9, 2006 (Edited) hi all. i was messing around in parts storage just now and found another holley. it says list 4777-2. 0641. all i know about it so far is that its a double and is 1450 and is 650cfm. 4777-2 650cfm (F)67, (R)76 6.5PV 4150.The Holley 4-barrel carburetor is one of the most famous pieces of speed equipment ever built. With an unbroken production run spanning more than six decades, this iconic design stretches through the vast majority of hot rodding's entire history. It's a legacy that includes all facets of custom cars, racing, and rodding.12698945 - LIFTER - General Motors. $33.28. Trending at $37.03. Find many great new & used options and get the best deals for Holley Ford 3795 -1 Carburetor at the best online prices at eBay! Free shipping for many products!The Holley 3245 carb was only used on the 1966 Chevy II L79. Carbs built for factory install on those cars had 3 digit date codes. In 1973, Holley went to 4 digit Julian calendar date codes. 047 is February. The '6' is not likely 1986 or 1996, so it makes sense it's 1976. I don't believe there's any record of 3245 carbs on any new GM vehicles ...C1 & C2 Corvettes - 3247 Date Code Decipher Help - Could someone help me decipher the date code of the 3247 Holley which is installed on my ... IIRC, Holley used 3-digit date codes up to 72-73 time frame, then went to 4-digit date codes (year+Julian date). That would make that a 1975 July carb or thereabouts. Rhino:1967 Holley 3916143 CT Stamping Date code "742" (2nd week of April, 1967) 1968 Holley 3923289 DZ Stamping Date code "833" (3rd week of March, 1968) 1969 Holley 3959164 GE Stamping Date code "935" (5th week of March, 1969)Holley list 3310-1 date 0743Holley aa-1, 2100 and 2110 exploded diagrams Carb dating: autolite and holleyHolley numbers technical squirrel oct. Appropriate holley carburetor date code.Holley date list corvetteforum Holley carb identification number date sketchy pit avoid mods stop need list hotrod partHolley 2300 tech specs. Check …

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Most 64's should be 2818 and most 65s 2818-1. The different date codes are a factory carb, 3 digit, or replacement, 4 digit. The 3 digit is year, month, week: 302= 63 Oct second week. The four digit is julian date, year. 2828= 282d day of a year that ends in 8. Reply Like. 04-05-2010, 09:40 PM.Get the best Holley Performance Carburetor products at the right price. Order online or pickup at your local AutoZone store. ... 20% off orders over $100* + Free Ground Shipping** Eligible Ship-To-Home Items Only. Use Code: AZSPRING24. Menu. 20% off orders over $100* + Free Ground Shipping** Eligible Ship-To-Home Items Only. Use Code ...69 DZ Carb Date Code. « on: April 25, 2011, 07:00:34 AM ». hello all, I'm new to the discussion group and I'm also in the process of purchasing a 69 Z, so I'm trying to decode authenticity the numbers for the car. Looking at the three digit code it seems this is a 68 year model carb, would I be correct? Carb data below: 3923289-DZ. List 4053 ...Holley 4 Barrel Carburetor! Date Code: 613! Factory for 1966 Fords! Mustang, T-Bird, Galaxie, Fairlane! U.S. Only. Make Sure This Is the Carb. Holley 4 Barrel Carburetor! ... Read more about the seller notes "Vintage Holley! Date Code 1966! Storage Find! A Little Dirty and Dusty! Missing Choke Assembly, and Possible Other Parts!4BBL Carburetor for 1904R 1906R Rochester Quadrajet 4MV Chevy 305-350c.i 750CFM. $189.00. Trending at $204.46. Find many great new & used options and get the best deals for Holley 3878261-eh Carburetor1965-1970 Chevelle Others List 3310 Date 0a5 at the best online prices at eBay! Free shipping for many products!Holley 3923288 List 4053 date code 942. I have been cleaning out my garage a little at a time. I'm up (or down) top my inventory of Holley carburetors. Among the many that I have is this one that has the following information on the choke horn: 3923288-DZ List 4053 942 Primary metering block #5583 with 68 jets in it and secondary …D: 1970's. E: 1980's. F: 1990's. All Ford carburetors have the number '9510' in them. An example of a complete carburetor number as it might appear on a tag: D3TF-9510-CC. D means the 70's decade, 3 means 1973. In our lists, we abbreviate this number as D3TF-CC because all carbs have a '9510' number. Ford, Autolite, Motorcraft carburetor numbers.Jan 7, 2006 · On a related note, my car was started the 4th week of May, 1968 (05D) and the carb is dated 833 like chedderboys. The 4053 carbs were built in batches and I've seen several 4053's with this date stamp. Now, I'm not sure when the batch before that was built, or the batch after that, but usually, the Holley carbs are a few days to several weeks ... Toyota Pickup 20R 22R Weber Carburetor Conversion Kit Manual Choke Kit. $349.00. Trending at $384.95. Find many great new & used options and get the best deals for 3923289 DZ 1968 Holley 4053 OEM Carb Date Code 813 Blocks F-5583 R-4519 at the best online prices at eBay! Free shipping for many products!I'll show you how to read the Edelbrock carburetor Julian date codes so you know how old your carb is. Why is this important? The older the carb the potent... ….

If it's an original 1964 carb, the date code is three digits (3). They are year, month, and week of production. A date code of 432 is 1964, third month or March, second week of March. If the month is November the month code is A. If December, the month code is B. If the date code has FOUR digits, it was built in the mid-70's or later (more recent).It has a date code of 054 (4th week of May 1970). The choke plate is missing and some linkages are missing. We suggest putting a rebuild kit in the carb. This carburetor will also work for many other applications including full size Chevrolets, Camaros, Nova Chevy II's, Chevelles, and others. "Keep Your GM Car All GM!"These units showed up on thousands of Slant-Six Mopar vehicles, but they are a temperamental, leak-prone carburetor that I avoid.C1 & C2 Parts - Holley 1967 L88 carb center section - Holley 1967 Carburetor. 3886091-AN and list number 3418-1. The date code is 083, that would be the 3rd week of August, 1970. This is an over the counter replacement for a 1967 L88 427 430hp manual trans. It is in perfect functioning condition....The Holley List 4054 was installed by GM on the following applications: 1968-early 69(first design) 427/430HP L-88 ONLY. The 705 is the date code which decodes as the fifth week of October, 1967. This is a true early production dated L88 carb. This carb is in very good original condition as shown. There are no breaks, repairs, or modifications.Quote. 1967 through 1969 Holley. The identification number and the date of manufacture are stamped into the forward vertical surface of the air horn. The three digit date code is broken down with the first number being the year of manufacture, the second number (or letter) being the month of manufacture (1 through 0 for January through October ...Correct Holley date code for 02C 69 Z/28 ?? ... What would be the correct build dates for a Holley carb on a 02C build LA Z/28? Would the 3rd week in Dec. 68 be too early? Thanks ... the block was cast B 11 9 and assy date was V0213DZ. The carb is dated 9 1 2 (2nd week Jan 1969). I am pretty certain that this is the original carb. Hope this ...Numbers that are preceded by '6R' or other combinations of numbers and the letter 'R' are casting numbers referring to a particular part of the carburetor and cannot be used to identify the carburetor. click on a link below for kits, floats and other parts listed by carburetor number. Holley List Numbers. R-120 to R-1324; R-1343 to R-2345; R ... Holley carb date codes, May 30, 2017 · Holley sells a new, 30cc metal pump arm, spring, bolt, and adjusting nut under PN 20-114 ($13.33 at Summit Racing). At some point in its life, the throttle lever came loose on the throttle shaft. , We will have this carb back in stock soon with date code 663. Call for estimated completion date. Out of stock. SKU: 24-3367 Category: Carburetors-Restored Tag: Holley. Description Additional information Description. Holley 3367 Restored 1966 Corvette carburetor List 3367 HOLLEY carburetor Date Code is 661 1966 June 1st week . This is original ..., Aftermarket Holley carbs have four-digit date codes that use the first three digits to describe a day in the Julian calendar, with the last digit used to identify the year within a non-specific decade. For example, "1999" could represent the 199th day of 1969, 1979, or 1989. Application Chart, Date codesMax power for holley 12-1800 Holley carburetor 3139-1 4 bbl 3874898 er date code 1903 chevelle 396Holley 3139-1 carburetor 3874898 -er ..date code 142. Vitamins without iron, healthy snacks for weight loss, holley carb cfmHolley 3140 1 4 bbl 3868864 es date code 594 Holley 2300, 2300g, 2300mg exploded …, Get the best deals for holley 750 carburetor marine at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items! ... Holley 750 Carburetor 3310-3 Date Code 1409. Opens in a new window or tab. Pre-Owned. 5.0 out of 5 stars. 3 product ratings - Holley 750 Carburetor 3310-3 Date Code 1409. $114.99 ..., As far as the last 3 number string, 5-4-2, this is from memory, we are aware these carbs were used in 1965 and 1966, so....5 - 1965, 4 - 4th ..., Find many great new & used options and get the best deals for Holley Parts Carburetor 3310-1 6R2762 Date Code 2772 No Reserve at the best online prices at eBay! Free shipping for many products!, As far as the last 3 number string, 5-4-2, this is from memory, we are aware these carbs were used in 1965 and 1966, so....5 - 1965, 4 - 4th ..., Correct Carb for ´67 s-code. when I bought my 67 Mustang 390cui A/T a couple of months ago the mechanic told me that the carb is not running well anymore when it´s getting warm. So before they deliverd the car they changed the carb to an Street Demon 625cfm and sent me with the car the old carb. It is an Holley 4160 80457., This is aa Holley vacuum secondary 600 cfm carburetor for early 70's Ford applications as it has the lever for the Ford kickdown on it. The date code is 3151. Looks to be all there other than it does not have an inlet fitting., For the Carb be careful of people selling a 4 digit date code as original as the are not. It is not just the carb center housing numbers also the primary bowl # stamped 6333 secondary 4519 look for any indication of grind out and re-stamp which is done a lot on the 4555 number. The numbers on the 4555 should look very close to this., I need some help identifying a holly carburetor. The car is a '71 LT-1. The carb has the following numbers. 3989021. LIST 4801-1. 2678. The first two numbers make sense to me...i believe these are correct for a '71 LT-1. The bottom number (according tovPrince's 68-72 restoration guide) is supposed to be a date code; first number last digit of ..., Carbohydrates or “carbs” get a lot of attention these days and it’s no secret that carbs can affect your blood sugar (blood glucose). You might be wondering if you should eat less ..., The Holley manufacturing date code format is Year, month, week. from my research I discovered the year date is the actual year Holley made the carb. This is based and verified on the very first carbs being produced. The Holley 4053 part number 3923289-DZ began production for the 1968 Z/28, L78, L89, & the L72., Find many great new & used options and get the best deals for 1970 Corvette Lt1 Camaro Z28 Holley Carburetor 3972123 List 4489 Date Code 061 at the best online prices at eBay! Free shipping for many products!, The Holley Carburetor date code is 881. Additional information. Weight: 14 lbs: Dimensions: 12 × 12 × 8 in: Related products. 1971 HOLLEY CARBURETOR 454 LS6 LS7 $ 1,199.00; HOLLEY LIST 3245 L 79 NOVA $ 1,599.00; Holley Ford Carburetor 4160 450cfm $ 500.00; Product Search. Search., A friend of mine has a Holley 3997788 6238-1. The numbers show it's a 1972 Z/28 with auto trans carb. The date code is a four digit code (1354) so it's a replacement carb from what I've researched and the "4" is the year of manufacture., In the constantly evolving world of healthcare, it is crucial for medical professionals to stay up-to-date on coding changes. Accurate and efficient coding is essential for proper ..., C1 & C2 Corvettes - Appropriate Holley carburetor date code. - My 66 has a carburetor that is dated for the 3rd week in November 65. My car has a build date of November 25th 65. Looking at the calendar, that's only a week and a half apart at best. Is that normal, or appropriate? I'm working toward having the car..., I decode it as a service replacement Holley for a 396 375 hp (Z-16) Chevelle. The date code is 1966 Jan 4th week. These were sold over the parts counter and was a popular replacment carb in the late 60s., For sale is an original Holley four barrel carb list number # 3139-1 from a big block 60's Chevelle or Impala SS engine, date code 793, everything moves freely, it will need restored, $275 as..., 1969 GT500 Carburetor C9AF-9510-N Holley 735 CFM; List # 4280 - automatic cars As far as price...try eBay. Arbour88 . Arbour88 Team Shelby Member #531 A few mods. ... and the correct fuel lines etc... Also, I would like to know what the date code on the carb translates to... Thanks for the help . Save Share. Like. Status Not open for further ..., The year portion of the date code on a Holley is the model year or the year representing the actual build date of the carb? Thanks. Mark 66 Chevelle SS ... I'm going to say carb build date as mine has a 5 for the year on it... for my 66 car. Seb (Seeb) TC #2794, Toyota Pickup 20R 22R Weber Carburetor Conversion Kit Manual Choke Kit. $349.00. Trending at $384.95. Find many great new & used options and get the best deals for 3923289 DZ 1968 Holley 4053 OEM Carb Date Code 813 Blocks F-5583 R-4519 at the best online prices at eBay! Free shipping for many products!, Very nice used Holley carburetor that was removed from a 1985 Mustang GT 5.0 Carburetor appears original. Frod part number: E5ZE-9510-GA Holley Part number:LIST 50265 Holley Date Code: 1575 May 1985 per the experts This is untested and are not guaranteed to work and sold as a core to be rebuilt., 1967 saw the first year the 396 V8 camshaft abandoned the grooved rear journal and matching bearing in the engine block in favor of a smooth journal like the 283/327 V8. Any camshaft from a 1965 or 1966 396 engine can be used in a 1967 or later block but not the other way around. This groove is clearly visible in this photo on the camshaft on ..., The Holley Carburetor date code is 881. Additional information. Weight: 14 lbs: Dimensions: 12 × 12 × 8 in: Related products. 1971 HOLLEY CARBURETOR 454 LS6 LS7 $ 1,199.00; HOLLEY LIST 3245 L 79 NOVA $ 1,599.00; Holley Ford Carburetor 4160 450cfm $ 500.00; Product Search. Search., New member. I have a 1968 800 with a 345. The Holley carb is a 2 barrel 500 cfm 4412-5 with a date code of 2644. I am trying to get a rebuild kit for it. None of the local parts stores have a listing for it. One of them said it was a 2300 and sold me that kit. The metering plate gasket is wrong and the power valve is totally different., A hot rod staple for over four decades! Dual feed fuel inlets assure you get all the fuel you need while its vacuum secondaries and manual choke make it amazingly universal. Plus, its classic Gold Dichromate finish provides serious muscle car looks and durability. The famed 0-3310 is one of the ten original inductees into the Hot Rod Magazine Speed Parts Hall of Fame! It was originally ..., Thanks Chuck. My car is a late Feb. build so it would make sense for a Dec. carb build date. The letter threw me. I bought the intake/ carbs 4 or 5 years after the car and didn't pay any attention to the carb codes. It was the early '80's and I was a newbie. I guess I got lucky they were dated just right., This is for a Used Original Chevrolet Chevelle Holley Carb, (GM Part Number 3878261-EH, GM Group Number 3.725, Holley Part Number 3310), Correct for 1965 1966 1967 ..., The numbers include the model number, usually 7 digits, a change letter, signifying changes during the model year, and a date code. The stamping or part number decodes as follows: Example: #70 2 8 2 1 9 DG 1938. 70 - Prefix code. "70" will appear on all late '60's Rochester Carburetors. 2 - Decade produced. 2 - 1960's. 3 - 1060's with A.I.R., Guys, I am looking for a correct date coded Holley 4088 for the GTE. I have been offered one with a late October 67 date code, and another with a late March 68 date code. The car is build date April 8 1968 Fortunately, when the original owner replaced the carb (The current carb on the car is a Holley 3310-2), they retained the original metal tag, which has a 7L8 (November 8, 1967) stamp. I ...