Hmmm, I will have to check. I know one thing, 4 blade props give out this grunt growl......sounds daaaym good when your cursin along! You can go to their website and check out the sound vids.

Maybe, the hp that I was running is a tad closer to your 502hp rating output. See below:

Sorry for the delay. I spoke with Tom today and he says really all we can do is just put it on and see what happens. Indeed it is a 19 pitch we did use and at the time I had a light modded 454 running 460hp and was hitting speeds of about 62mph.

Hard to beleive you were spinning such a small wheel at 460hp. Based on my conversation with them I should be running a 21p. More than likely when I return from vacation next week and pay uncle sam what I owe him, I'll order a new prop. If you were a 20p I maybe willing to give it a shot but at 19 thats pretty small.

Thanks much