What year 360?

Mark,

Well, now it sounds like an expensive idea that doesn't work very well...

I think I'll forget the sleeves!

Thanks a lot for the good advice!

A chassis dyno run of the 360 in my car says that my engine makes about 445 RWH, on 110 octane, with some alcohol injectied from a SnowPerformance Boost Cooler and an MSD BoostMaster retard unit, on ten pounds of boost from a belt-driven Vortech V-1, S-Trim blower.

It does that at about 5,500 rpm. Efforts to wind it tighter with the current setup do not yield any more power, so I think I'll put a 5,500 rpm chip in the MSD "Soft Touch" RPM limiter and live with it.

I don't know how reliable the rule of thumb is that says your rear wheel horsepower is about 85-percent of your flywheel HP, but if it's true, my engine makes approximately 525 flywheel HP, and with stock cast pistons and rods, and stock composition head gaskets (and, 9:1 cr), I'd say my engine is living on borrowed time, already.... I think I'll just run it 'til it grenades and build a 383, which I consider a much better choice for supercharging than a 360, anyway; 5 head bolts per cylinder, for one thing...:cheers:

What years were the engines that had the casting number you recommended?

Thanks again for the info....