dont grind the nubs off the top of the intake runner. thats extra meat left by the factory to keep lifters from pushing through. if gm decided it was required for stock spring pressure you better bet...
Type: Posts; User: cobaltssoverbooster
dont grind the nubs off the top of the intake runner. thats extra meat left by the factory to keep lifters from pushing through. if gm decided it was required for stock spring pressure you better bet...
the only way to guarantee these ports do not die is to monitor the flow ratio and measure the the velocity with an air probe on the flow bench. its very easy to ruin these even with a standard flow...