We are now driving my 40 Chevy with the 200R4 behind the 302 GMC. It drives great with smooth takeoffs and no more shifting. One problem remaining is the GMC rocker arm cover is leaking oil at the rear. I put on a new cork gasket but it's still leaking. We also put the cover on a sheet of glass to check out and fix any high and low spots at the base.
Does anyone know if a rubber gasket is available? Seems like that would work better the cork.
Does anyone seal the cork gasket to the head or rocker arm cover , or to both ?
Any suggestions will be appreciated.
Frank Hainey
