carb

[Cutty1]

which carb would be better it's a demon an it would be for my olds 350 so would 650 be enough or 750 i was told the motor is built to stock.it's a 68

 

[olds307 and 403]

I been told an Olds 350 likes a 750 in a Holley.

 

[mheath717]

750 cfm sounds way too big for a STOCK 350. I have a Quadrajet on my mildly built Olds 350, and it does great for me.

 

[87montecarlomrc]

Don't go with a 750, a 650 will be fine even if you do some mods in the future.IMO

 

[olds307 and 403]

Captjim was my source. He ran a 670 street avenger, which he is selling on OP. He has ran good track times. He said Olds and Buick 350's seemed to like bigger carbs as far as Holley's go. He went up 4 jet sizes, I believe from stock, to run the best times. Just get a late 70's Qjet that came of a 403 77-79, should be close to what you need. The later carbs are better than early carbs. What cam do have in your car?