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exgmguy · 03-28-2002, 03:42 PM

I remember having a low peak power problem. It turned out to be badly worn valve guides in my TFS heads. After the guide fix peak power went from 4900 RPM to I think 5200-5300.

Then I switched to the Holley and peaked at 5800 rpm, and layed down 20 more ponies to the wheels over the GT-40 with the ported lower (to a 1262) Like 1BAD89 said, I picked up a consistent 2 mph on motor and 3 on the spray.

03-28-2002, 03:42 PM	#5
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	I remember having a low peak power problem. It turned out to be badly worn valve guides in my TFS heads. After the guide fix peak power went from 4900 RPM to I think 5200-5300. Then I switched to the Holley and peaked at 5800 rpm, and layed down 20 more ponies to the wheels over the GT-40 with the ported lower (to a 1262) Like 1BAD89 said, I picked up a consistent 2 mph on motor and 3 on the spray.