Carb Question

[srgould41]

I am not sure this is the best spot for this question, but here goes.

I will be installing a Chevy 305. I came across a good deal on a 650 cfm offroad carb. The motor will be getting block hugger headers, an RV cam, and a single plane 4bbl torquer manifold.

Is a 650cfm carb too much for a 305?

Thanks,

Steve

 

['74 UA FJ]

You don't need 650cfm, but you can make it work fine. You might need to jet it down some to get it dialed in perfectly.

 

[Tankota]

Its not likely you can use all that carb has to offer (like a 400sbc or a BBC) but that doesn't mean it won't work fine on your 305. The 750cfm quadrajet I'm using on my 350 came off of a 305 stock in a 1980 malibu. Had it on my 305 before I swapped in my 350 and never noticed a difference...except the 350 can utilize more of the secondaries than the 305 could.

PS Like the previous poster said...you may need to rejet.