Very nice!
A more hopped-up version of the 421 HO I did for my Le Mans convertible.
Mine has a NOS 068 cam, Crower rods, Ross forged 27cc dished pistons for 8.8:1 compression, Crower Enduro stainless roller rockers, ARP screw-in studs, new stainless valves and hardened seats, no head porting or filled crossover and standard log exhaust manifolds. Carburetors by Dick Boneske too!
I’m a huge fan of keeping the factory look on Pontiac performance engines, the Tri-Power 421 HO engines are tops in my book.
