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If I had to bet installed straight up peak hp be 6,500 plus. See if someone here can input all your numbers in to their software program and see what comes it comes up with. Will need cam card and more than likely int and exh @ every .100 but could probably get close finding on line with same ported head numbers if he hasn't done yet.

I have the dyno sheet from this cam, blown. VERY similar set up as mine, 572, Brodix heads instead or Canfields but same runner size, similar valvetrain, Whipple, The engine made peak power at 6500.

Quote:

Originally Posted by endeavour32 (Post 4658090)

I'm just exploring ideas right now. I'm in liquidation mode, as I'm going to buy something different, as the 43 project is done. When I decided to sell off all the stuff I've accumulated over the past year, the only things I told myself I was going to keep were the long blocks, and SSM 6 set up. Everything else is going.

At some point though I need to have the blocks rebuilt, as that is never a quick process. When I need to do that I need to know NA or blown. If I stick with blown, it has to be Whipple or ProCharger, as I'm not about to have scoops.

I was down the same road so many times and so close to hitting the purchase button on the pistons and having Valako open up my chambers for a a little more performance and getting my compression right on the money. Could always do a little lower compression build with intent of possible forced induction down the road. 572/750 very feasible without beating the valvetrain to death. One of the benefits of good flowing heads is you can tame the cam down. What compression and duration does tinkerer have and top end rpm. Just curious cause I know his build was intent was adding doing similar down the road type deal.

Quote:

Originally Posted by endeavour32 (Post 4658093)

I have the dyno sheet from this cam, blown. VERY similar set up as mine, 572, Brodix heads instead or Canfields but same runner size, similar valvetrain, Whipple, The engine made peak power at 6500.

The whipple probably pushed it a few hundred more rpm higher I would think also.

I'll probably stick with the blower set-up. I already had the exhaust, cams, pistons, heads. It's fun to throw around ideas, but everything is already there, and its all great stuff. I'll just go with something a bit more tame than the quad rotors.

Ya it's fun until you find yourself feeling like an egg beater trying to sleep at night. Lol... :boat:

Quote:

Originally Posted by getrdunn (Post 4658108)

Ya it's fun until you find yourself feeling like an egg beater trying to sleep at night. Lol... :boat:

HA- Is that why I haven't been able to sleep this week?

I wouldnt be afraid to run that cam. I assume its a solid roller. Is it a tight lash grind?

wide lobe separations work well with small blowers/small carbs , that are limited. Narrower lobe separations can not only make more power, they also help cool the chambers and valves down because of the fresh cool air charge being blown thru when valves are in overlap. If you have enough blower, to compensate for the small loss of boost psi, they work well.

lot of variables to whats the right LSA for a blower. Gasoline, alcohol, endurance vs drag race, emissions concerns, and so on.

For what its worth, a GM ZZ572 uses a 254/264 112 hyd roller, that peaks at 5500ish. The 720R version has a 266/274 112 .714/.714 solid roller that peaks at 6300ish.

those are both 4.375 stroke 572's like yours.

Thanks Joe!

After a a lot of thought, I think I’ll stick with a blown application. For that application these cams, are perfect.

Now it it comes down to the new boat. I’m going to check out a 38 Top Gun today and then the 38 Scarab next weekend.

Good plan man! Looking forward to seeing you in the water soon!