Tom, for my curiosity, was the Luhn engine installed in a vehicle? Stock(style, solid maybe) engine mounts, or an engine plate/mid plate? And was it launched hard on the strip? My personal opinion ( from reading on this forum about split production Pontiac blocks) is that while impressive, I don't think I could sink the money in a production block at 850+ horsepower and feel anywhere close to good about it. I know others have done it with success, at least for a time. And for a long time there wasn't an option. I feel like the OP shouldn't leave this discussion thinking it's anything more than a semi calculated risk to try that. And as has been noted, a trip to the junkyard will yield 1000 hp capable stuff with the corporate stuff. I believe if you go aftermarket block on the corporate stuff, you can get 6 head bolts per cylinder to go along with the cross bolted mains... It takes real dedication to stay with the Pontiac stuff, and I applaud those that have and do...
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'65 Tempest 467 3650# 11.30@120.31
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