Cool air vs. plenums? - ZR-1 Net Registry Forums

Paul Workman · 08-10-2008

I went for a zip in da Z and the temps were in the mid 60s. I was somewhat used to warmer weather performance (summer), but that relatively "cold" air really made a noticeable difference in the LT5s output!

Which brings to mind plenum heat: A while back I saw (I believe) an LPE gasket, specifically designed to isolate the plenum from engine heat. Not to doubt LPE, but I wonder how effective the gaskets could be, considering the fact that coolant is routed thru part(s) of the plenum? The gaskets appeared to be made from some black synthetic material, about 3/8" thick. Anyone know about these??

In any case, it seems to me the LT5 might benefit from a plastic intake, similar to those used on the LSx engines, as far as keeping the intake as dense as possible...or would our ECMs and MAP system not be able to incorporate the cooler intake. I don't know squat about our ECMs capabilities in this specific regard, but some of ya do. What do y'all think?

TIA,

P.

08-10-2008	#1
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Cool air vs. plenums? I went for a zip in da Z and the temps were in the mid 60s. I was somewhat used to warmer weather performance (summer), but that relatively "cold" air really made a noticeable difference in the LT5s output! Which brings to mind plenum heat: A while back I saw (I believe) an LPE gasket, specifically designed to isolate the plenum from engine heat. Not to doubt LPE, but I wonder how effective the gaskets could be, considering the fact that coolant is routed thru part(s) of the plenum? The gaskets appeared to be made from some black synthetic material, about 3/8" thick. Anyone know about these?? In any case, it seems to me the LT5 might benefit from a plastic intake, similar to those used on the LSx engines, as far as keeping the intake as dense as possible...or would our ECMs and MAP system not be able to incorporate the cooler intake. I don't know squat about our ECMs capabilities in this specific regard, but some of ya do. What do y'all think? TIA, P.