Re: Intake Gasket or Head Gasket?
What torque setting did you use for the intake manifold bolts when installing the new Performer? Did you clean out the intake bolt holes in the block before mounting the new intake? How did you clean them? Did you use new bolts?
I'm partly asking because I've got a new RPM Air Gap I'm prepping to install, but am hesitant to use a tap & die to clean out the holes (never used one before and don't want to screw up). The manual warns that gunk in the bolt holes can give bogus torque readings, leading to possible leaks like what you're describing. I suppose that old bolts can do the same.
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'71 C-10 Fleetside, 350/SM465
My truck is like my wife: they no longer look like they did on the showroom floor,
but you just can't beat the beauty that comes with age. 
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