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Shawn · 11-11-1999, 08:01 PM

I have a 351c in my car with stage II ported-2v heads, stage II ported Performer RPM manifold, 10.5:1 compression, hyd tappet cam .543" 305deg 110 lobe seperation, 1 7/8" headers and a 600cfm Carter-mechanical sec's polished to 630cfm.
I'm running mid 13's in my 1981 Fairmont with a somewhat poor C4 auto...

I've been thinking that I need to jump upto a bigger carb since I recently had my heads and manifold ported, I'm looking for recomendations anything will help as I only know EFI. I've been thinking 750cfm would be a good number knowing that a friend had I had went from 650 to 850 and lost power...what do you think??

THANKS!!!!

11-11-1999, 08:01 PM	#1
Shawn Registered Member Join Date: Dec 1998 Location: Chicago, IL. USA Posts: 77	Carb CFM help...HELP!!! I have a 351c in my car with stage II ported-2v heads, stage II ported Performer RPM manifold, 10.5:1 compression, hyd tappet cam .543" 305deg 110 lobe seperation, 1 7/8" headers and a 600cfm Carter-mechanical sec's polished to 630cfm. I'm running mid 13's in my 1981 Fairmont with a somewhat poor C4 auto... I've been thinking that I need to jump upto a bigger carb since I recently had my heads and manifold ported, I'm looking for recomendations anything will help as I only know EFI. I've been thinking 750cfm would be a good number knowing that a friend had I had went from 650 to 850 and lost power...what do you think?? THANKS!!!!