hard numbers?
Thread Starter
Former Vendor
Joined: Jun 2001
Posts: 7,204
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From: St Marys PA
hard numbers?
Does anyone have hard numbers on the performance gained from a ported SR verses stock setup? :cheers:
I was just playing around with a spreadsheet that I had. Rule of Thumb calculation for potential HP from air flow is:
air flow at 28" water x .257 x Number of Cylinders
So it looks like for every 1 cfm increase in airflow would equal ~2 HP potential increase. Does that sound right?
I found some information that says a SR flow is 233 stock and can go up to 278 heavily ported. This surely can't mean you can pick up ~93 HP from just porting. I realize this is all in theory, but do you think 1/2 that HP is possible just from massaging the SR and base? :confused:
[Modified by ski_dwn_it, 1:54 PM 12/5/2002]
I was just playing around with a spreadsheet that I had. Rule of Thumb calculation for potential HP from air flow is:
air flow at 28" water x .257 x Number of Cylinders
So it looks like for every 1 cfm increase in airflow would equal ~2 HP potential increase. Does that sound right?
I found some information that says a SR flow is 233 stock and can go up to 278 heavily ported. This surely can't mean you can pick up ~93 HP from just porting. I realize this is all in theory, but do you think 1/2 that HP is possible just from massaging the SR and base? :confused:
[Modified by ski_dwn_it, 1:54 PM 12/5/2002]
