ZR-1 Net Registry Forums - View Single Post - Ported IH, non-ported IH.. have some questions

Aurora40 · 08-20-2008

Wow, 350whp from a stock '90-92 is pretty dang stout.

FWIW, my car on the same dyno put down 325whp with ported IH, plenum.

Added a cat-back exhaust and went to 350whp.

Added headers and went to 370whp.

All on a SuperFlow dyno.

My guess is doing the exhaust first makes more sense than doing porting first.

08-20-2008	#5
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: Ported IH, non-ported IH.. have some questions Wow, 350whp from a stock '90-92 is pretty dang stout. FWIW, my car on the same dyno put down 325whp with ported IH, plenum. Added a cat-back exhaust and went to 350whp. Added headers and went to 370whp. All on a SuperFlow dyno. My guess is doing the exhaust first makes more sense than doing porting first. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]