CLASS RACER FORUM - Carb ID and app

CLASS RACER FORUM (https://classracer.com/classforum/index.php)

- Stock and Super Stock Tech (https://classracer.com/classforum/forumdisplay.php?f=4)

- - Carb ID and app (https://classracer.com/classforum/showthread.php?t=60138)

Need a carb id and what it would have come on. 7028210 Q Jet, was on a 69 chevelle 325 / 396 auto nov 68 production date, is this the correct carb for this app? Tom

Re: Carb ID and app

it's for a 68 385hp 727 auto

Re: Carb ID and app

Tom…1968 Camaro 396-325HP with Automatic. MB

Re: Carb ID and app

Quote:

Originally Posted by Tom Meyer (Post 487169)

Need a carb id and what it would have come on. 7028210 Q Jet, was on a 69 chevelle 325 / 396 auto nov 68 production date, is this the correct carb for this app? Tom

here is a link:
http://quadrajetparts.com/decode-you...retor-t-5.html
another site I went to agreed with this
looks like 68, non California, automatic trans.
didn't see engine / model specific info.
Good Luck

Mike A114
P/SA

Re: Carb ID and app

a 1968 396/325 hp is a 7028218. you can check NHRA web site under engine blueprint specs. they have the correct numbers

Re: Carb ID and app

Does the number matter to NHRA as long as internal dimensions are correct?

Re: Carb ID and app

Quote:

Originally Posted by GTX JOHN (Post 487716)

Does the number matter to NHRA as long as internal dimensions are correct?

No. Short answer. Jim

.

Re: Carb ID and app

This is for a resto, needs to be the right numbers match that I think now is 702900. Did you know that the min spec has a 15ths grace measurement. Tom

Re: Carb ID and app

Quote:

Originally Posted by Tom Meyer (Post 487729)

This is for a resto, needs to be the right numbers match that I think now is 702900. Did you know that the min spec has a 15ths grace measurement. Tom

Tom,
Should it be 7 digits?

Mike A114
P/SA

Re: Carb ID and app

Rochester Carb. Stamping Codes

First part of stamping number:
702 - Late 1960's
703 - Late 1960's with Air Injector Reactor (some exceptions exist)
704 - 1970-1975
1705 - 1976-1979
1708 - 1980's

Then Model Year (i.e., 7=1967, 9 = 1969, 0=1970, etc.)

Then Carb. Type
0 - Monojet, Federal Emissions
1 - Two Jet, Federal Emissions
2 - Quadrajet, Federal Emissions
3 - Monojet, California Emissions
4 - Two Jet, California Emissions
5 - Quadrajet, California Emissions
6 - VariJet, Federal Emissions (2 barrel)

Then Division of GM

0, 1, and 2 were all used by Chevrolet (2 used on Cadillac also).
3 - Cadillac
4 - Buick
5 - Olds
6,7 - Pontiac

Then transmission type
0,2,4,6,8 Automatic Transmission (some exceptions exist)
1,3,5,7,9 Manual Transmission (some exceptions exist)

On some carburetors there is a production code (usually a two letter code) stamped below the numerical ID code.

On some carburetors there is a manufacturing date code below the production code.

Example: 2277 would indicate the 227th day of 1967 or 1977, depending on the year specified in the ID code.