Follow along as we build a 506hp street 462 from a '67 Pontiac GTO 400 engine block. ... Timing Chain. Comp Cams dual-roller. Induction. Intake Manifold. Performer RPM . Mods. Plenum clean-up .

Check out this 1967 Pontiac GTO that ... Brian located this '67 LeMans convertible on an auction ... Phased to the crank with a double-roller timing chain is an Edelbrock hydraulic flat-tappet ...

Pontiac made just under 82,000 '67 GTOs, and it's hard to imagine any of them sitting on dealership lots for long. Sadly, only about 9,500 of those were in the stunning convertible body style.