Will be a really neat dyno though using the original zz572/620hp cam. Basically heads and carb change. Keep us posted and good luck.
John

That dom on top of a 4150 intake with spacer going to work well. Cram all the air in there you can.

Thanks for all the help guys!! Obviously the biggest reason to dyno is to tune. However I was really hoping to see 750hp..... love to have a dyno slip that says 750's vs 720 or 730's. This is the only reason I wouldn't use Dick if his dyno really does read low. Dick is a great guy and have been there many times picking his brain:)

Not trying to be a smart ass, but the only dyno reading that matters is your gps. Hope you hit your number.

Ya... apparently a 4150 intake with an adapter to a 4500 carb can make more power than a 4500 intake!!

My advice for a good dyno shop / services.

Find a dyno guy who is willing to try things on the dyno. If a guy's idea is to set the timing to XX degrees, go up or down 2 jet sizes, and call it a day, is a waste of time and money. A good dyno shop willing to spend time with you, finding the optimum tune, is well worth the cost.

You'll always hear about how a certain persons dyno is "stingy" . If I had a dollar for every time i heard about so and so 's dyno being "conservative" I'd be a rich man. Then you'll hear the opposite, and guys talk about someone elses dyno , and say that dyno is "optimistic". Its always "my dyno is conservative" and "their dyno is optimistic".

Bottom line, look at a shops dyno facility. See what kind of data acquisition he has. You want that info, and it will help make things a little clearer on whether or not the numbers are in line. Its easier for the drag racers to test the validitity of dyno numbers, than us boaters. I've seen some dyno's at shops that look like they are straight out of WWII era. Barely any data aquistion, who knows the last time any calibrations have been checked, etc.

Slight side track.

Some days I have a happy GPS - only happens on max recall speed. Seriously. Think this make's it worth big $$$$ other than break out racers of course. LOL. :)

Do you have a carb picked out? PM me if you want to try one of norms highly modded 4150s, it beat the doms on my dyno hands down, 16-20 hp, I could arrange to borrow you one, Smitty

Rob I just spoke to Norm the carburetor guy he is willing at no charge to come to you Dyno session with two of his highly modified 4150s after you have your motor broken in and running on your dominator and personally tune them and see if there's a horsepower gain if you are willing to consider purchasing one if it works we recently saw 18 - 21 horsepower over a box stock dominator and a modified dominator on my 548 it's a no-risk offer let me know

What an offer Rob! You'd be crazy to pass that up! That's really cool of you to arrange Smitty.

I've spoke with Norm and really enjoyed our conversation, great guy that you just get a good feeling about when chatting.

Plus his success has already been proven, Definitely at the top of list next time I buy carbs!

http://www.compfuelsystems.com