Hi, I'm trying to put my 1970 Z-28 Back close to original as i can. I have the carburetor off of it and has the numbers 3310-2. and its a Holly. Can anybody tell what carb is suppose to be on it. Its got the 350 LT1 engine with 4 Speed M-21.

Thanks

Steve

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Moving to Decoding Topic!!...

http://www.nastyz28.com/ubb/smile.gif The Management

The number you have listed apears to be a Manufacturer's List #, and should have been stamped on the front of the primary barrel air horn, on the driver's side. The first number should have been a part number, perhaps 3878261 EH? After that would have been the 3310-2 number you listed, which identifies it as a 1965 Chevelle SS396 (375 hp Z16, manual transmission) carburetor. Just below that would have been a date code.

The correct carb for your 1970 LT1 (non California) is a Holley model 4150, GM part #3972121, List #4555. The primary metering block should be stamped 6333, and the secondary metering block should be stampted 4519, with NO idle vent. The Cali LT1 used a different list number. If you have a Cali engine, I wil post those ID nubmers for you as well.

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