teamwieland

First pulls on dyno and oil leaks already starting. Hard to tell from pics but appears to be originating from where intake meets heads. Grey RTV looks good from outside and no seals used. Is this the classic intake oil leak location or could it be originating from heads?

cutlassefi

Yes, you need to press in a dab at each corner, then lay the bead across the China rails.

Olds64

The intake-to-block and intake-to-heads mating surfaces are places where an oil leak can easily develop. Did you use the turkey tray intake gasket? I've never been able to get those gaskets to seal. I use the intake-to-head fiber gaskets and then ditch the rubber or cork end rails. Instead I liberally use Form-a-gasket on the end rails. I've never had intake oil or vacuum leaks since I ditched the turkey tray.