header gaskets?
 

n/a motor, what brand is everybody using.

Either SCE copper or no gaskets with a sealer.

SCE

The dead soft alumunin gaskets are the best sealing.I have the copper on my z-28 and they leak.


Percys are what I have on my vette they are good.

I run the steel core Fel-Pro's. Absolutely no issues even with blazing EGT's that high boost and a low timing pump gas tune produce. I retorque them after the first two heat cycles (they barely move) and they don't move after that.

Never had good luck with the Pearcy's aluminum gaskets or the copper ones, tried them in the past. Been using the Fel-Pro's for about 3 years now with very good results. I use their steel core collector gaskets too.

Earl's Pressure Master header seals. Aluminum frame, soft aluminum seal insert. I never had a leak in three years+ running them. I had to check torque once after installing them, and only one bolt was even the slightest bit loose. I do have to admit that I may have forgotten that one the first time though. That and they look cool installed.