carb. CFM ?'s

rod · 03-07-2010, 11:46 AM

dusting my old AHRA stock class car off to go to the 'vegas super chevy race soon. since bracket racing is all tere is anymore....i will retain the car as is. it was legal [back in the day] to run any Holley carb.
so a bit of car background and then the question.
3550 w driver, 2.64 low 4 speed, 5.67 gear. 265 [+60=273]. old Holley single plane [300-1 maybe] currently running a 600DP.
the two quickest runs the car ever made [at two different tracks, years apart] were with a 750 DP. 'vegas is 2200', Bakersfield is 280'
the calcs show this engine needs a 600 CFM. are the calcs wrong, only ballpark, or are there other facts which influence the outcome?

thoughts/ideas?
thanks rod

03-07-2010, 11:46 AM	#1
rod Member Join Date: Dec 2009 Location: Kingman, NW AZ. in the middle of the longest stretch of Route 66 Posts: 315 Likes: 0 Liked 20 Times in 15 Posts	carb. CFM ?'s dusting my old AHRA stock class car off to go to the 'vegas super chevy race soon. since bracket racing is all tere is anymore....i will retain the car as is. it was legal [back in the day] to run any Holley carb. so a bit of car background and then the question. 3550 w driver, 2.64 low 4 speed, 5.67 gear. 265 [+60=273]. old Holley single plane [300-1 maybe] currently running a 600DP. the two quickest runs the car ever made [at two different tracks, years apart] were with a 750 DP. 'vegas is 2200', Bakersfield is 280' the calcs show this engine needs a 600 CFM. are the calcs wrong, only ballpark, or are there other facts which influence the outcome? thoughts/ideas? thanks rod