rochester carb

S

scarborough

Greasemonkey
Thread starter
Sep 30, 2016
126
18
Quick Google search netted me this:
7046222

704- It was used on 1970 to 1975 GM vehicles
6- 1976 production date
2- Its a quadrajet 4bbl federal standards
2- Chevrolet
2- automatic transmission.

look here: Carb ID
is it was 600 or 750 and will it fit on olds with edelbrock intake if so is it worth rebuilding thinking of mounting it on 71 455
 
pontiac guy

pontiac guy

Master Mechanic
Oct 28, 2016
399
93
Royse City, TX
All Quadrajets are spreadbore. Not all edelbrock intakes are. What intake do you have? It will work provided you are willing to re bend the fuel pump to carb line. Chevys fuel inlet it not oriented the same as Olds.

I consider the Qjet to be superior to all other carbs for nearly all uses. Some people will disagree but they are obviously wrong. So yes I would say it's worth rebuilding. Don't get an auto parts store kits get one from a Quadrajet specialty company. Make sure your throttle shafts aren't loose in the base plate otherwise you will have to bush them. Get a good Qjet book and read it. Doug Roe's book is considered to be the definitive Qjet book but there are several good ones out there.
 
S

scarborough

Greasemonkey
Thread starter
Sep 30, 2016
126
18
All Quadrajets are spreadbore. Not all edelbrock intakes are. What intake do you have? It will work provided you are willing to re bend the fuel pump to carb line. Chevys fuel inlet it not oriented the same as Olds.

I consider the Qjet to be superior to all other carbs for nearly all uses. Some people will disagree but they are obviously wrong. So yes I would say it's worth rebuilding. Don't get an auto parts store kits get one from a Quadrajet specialty company. Make sure your throttle shafts aren't loose in the base plate otherwise you will have to bush them. Get a good Qjet book and read it. Doug Roe's book is considered to be the definitive Qjet book but there are several good ones out there.
thanks for feed back
 
  • Like
Reactions: airboatgreg
olds307 and 403

olds307 and 403

Geezer
Oct 14, 2008
6,228
113
Melville,Saskatchewan
Find an 800 cfm carb from a 76 through 80 in the States, through 85 in Canada. It will need a recalibration of the idle circuits to run right being an emissions carb. The older carbs are 750 cfm, like that one with a few exceptions and nearly all the front inlet, which fit an Olds V8 best, after 76 are the vast majority 800 cfm. I believe Rochester rates their carbs differently than other makes, so 650 and 700 cfm would be about right compared to a Holley.
 

Similar threads

Please support GBodyForum Sponsors

Classic Truck ConsolesDixie Restoration DepotMike's MontesP-S-TSouthside Machine PerformanceUMI Performance

contact[email protected]for info on becoming a sponsor