Possible 4-Port N/A Start?

NoDOHC · 05-04-2011, 11:28 PM

Any additional data will be useful - a sample size of 1 is not a very complete indication.

The 4-port making more power than a 6-port is relatively common knowledge, that is why I opted to buy and build a 4-port rather than upgrading my 6-port.

I know a guy who spent several iterations of porting on a 6-port and managed to get 192 WHp on a dynojet out of it at 8,400 rpm. I was impressed until my nearly stock 4-port put down 216 WHp at 7,500 rpm on a Mustang Dyno. If I had done as much to my 4-port as he had to his 6-port it would probably have beat his numbers by quite a bit more. He is now building a 4-port.

05-04-2011, 11:28 PM	#25
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	Any additional data will be useful - a sample size of 1 is not a very complete indication. The 4-port making more power than a 6-port is relatively common knowledge, that is why I opted to buy and build a 4-port rather than upgrading my 6-port. I know a guy who spent several iterations of porting on a 6-port and managed to get 192 WHp on a dynojet out of it at 8,400 rpm. I was impressed until my nearly stock 4-port put down 216 WHp at 7,500 rpm on a Mustang Dyno. If I had done as much to my 4-port as he had to his 6-port it would probably have beat his numbers by quite a bit more. He is now building a 4-port. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)