Would like some imput

Bandimere is, as I remember, about 6,000 feet in altitude.

The one thing (short of forced induction or a power adder like N2O) that helps high altitude engines is more compression. If I was trying to go faster and was building a new engine for that elevation, I'd put some 12:1 pistons in it.

The accepted rule of thumb is that you lose 3% of your horsepower for every 1,000-foot rise in elevation, so at Bandimere, you're down 18 percent on flywheel horsepower compared to what you'd have at sea level.

You can recoup SOME of that with high compression and by choosing a cam with rapid lift rates but relatively short duration (Hughes cams are sometimes like that) to help keep cylinder pressures up.

Good luck with your rebuild. Aftermarket pistons with domes to get the compression up are a definite "must have" at altitudes like yous, I would think.:read2: That's what it sez here....

Bill, in Conway, Arkansas