ZR-1 Net Registry Forums - View Single Post - 430-435 CHP now.....What can I do to get 500-510 CHP?

Top Toy · 06-25-2016

Head porting generally includes opening up both the intake and exhaust runners as well as unshrouding the valves in the combustion chamber, all of which require removal of the engine to get the heads off. If you're careful not to allow any metal bits to fall into the valve pockets, you can match the IH and head ports without removing the heads, but the benefit from that mod alone is pretty small.

06-25-2016	#42
Top Toy Join Date: Jul 2012 Location: Allentown, PA Posts: 308	Re: 430-435 CHP now.....What can I do to get 500-510 CHP? Head porting generally includes opening up both the intake and exhaust runners as well as unshrouding the valves in the combustion chamber, all of which require removal of the engine to get the heads off. If you're careful not to allow any metal bits to fall into the valve pockets, you can match the IH and head ports without removing the heads, but the benefit from that mod alone is pretty small. __________________ '95 ZR-1, aqua/gray, #167 368 LPE/Haibeck, Web cams, Stainless Works headers, B&B Fusion exhaust, 18" Fikse wheels, Alcon brakes, lowered. 491 SAE RWHP.