CorvettePlenum.com ported plenum
I have to leave the heads, cam, i.e. the whole engine stock, but can do pretty much as I want to the intake (no nitrous or turbo/supercharger) and the exhaust of my C4 and remain in SCCA BSP.
It isn't that expensive and was wondering if anyone had real world experience. I would like to continue making power for a few hundred more RPMS, not lose any torque and perhaps gain some HP.
Read a lot posts but haven't actually had anyone say I installed and ran one and liked it.





