Quote:
Originally Posted by Scott65
Tom, could you in good conscience recommend to the OP to put 862 horsepower on his stock Pontiac block and crank? Expected lifespan? 6-8 psi may be a very appropriate range for this to keep things together.
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The engine that Luhn Performance ran was not a aftermarket block, it was a basic early 70s 455 engine block with some good rods and I believe one of Wade and Mark's BOP forged cranks.
So to answer your question, after we tore it back down for a engine inspection the only issue we noticed was some main cap fretting, (that Mark later fixed with longer precision fit alignment dowels, same two bolt main cap block).
I plan on doing something very similar on my aluminum head FACTORY 455 block (2 bolt main) using another T-Trim Vortech Supercharger at (9-10 lbs of boost) in my street convertible. Should be good for a easy 600 HP with a mild camshaft and factory crank. I would not worry about running 5300 rpm or 13 psi of boost but do not want to twist up the car (64 GTO) to brag about another 860+ HP engine. SO YES, NO PROBLEM IN MY MIND AT ALL.
Tom V.