I spoke to Butler, and they reaffirmed what my machinist said. That the valves typically seat / seal a few miles after start up.
I will rent a leak down kit and do a test, then go from there. Yes, something to worry about.
On another subject, do you guys think I can install my Ram Air Resto manifolds on the engine off the car, and the engine will fit in the '65 GTO?
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1965 Pontiac GTO
455/469 w/ #48 Heads, '65 Tri-Power
9.25:1 CR
Stump Puller Cam
Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00
3.55 Rear Differential
Front: 225/60R15 Height: 25.6"
Rear: 275/60R15 Height: 28"
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