hughes whiplash cam and other cam opinions

Hi elitesrock2,
I don't personally have a whiplash cam, but I considered getting one for my son and I's project for awhile and read as many reviews as I could. All the reviews except for one youtube review have been very positive for both the small block and big block versions. Given the age of the engine, stock compression may be too high for this cam. Here is a quote from Hughes site.

"Our Whiplash cam is designed for low, basically stock compression engines. This cam will run on pump gas in a 383/400 with 8.5:1 or less compression and iron heads. If your compression is higher than this you may need to use a higher octane race fuel. Your vacuum should be in the 9"-11" range using this cam.
(Figures calculated using stock stroke & compression at 750' altitude.)"

According to Allpar.com, the compression didn't lower to 8.5 until 1971. I believe 69 had the highest if the information is correct.

Travis