Hi,
I have a similar engine: 462, #15 heads, factory crank and rods, 9:34:1 compression.
I am running a Comp Cam XE-268 with 1.5:1 rockers. Stock manifold and Q-Jet. Mine has M20 4 speed and 3.55 rear gears. Has plenty of low end torque. Runs strong to 5200 rpm. Idle is smooth and has plenty of vacuum for power brakes. I am planning on putting 1.65:1 rockers and headers on it later this year. Also have a Performer manifold that I have port matched and set up for the Q-Jet cookstove choke. Its just to hot to do all this stuff in North Alabama in the summer.
Mike
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1968 Pontiac GTO 462CID, 4-Speed Manual, 3.55 rear. Aleutian Blue exterior, 219 Teal Blue interior. Chrome bumper, AM & 8-Track and Rally II Wheels
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