Jobs like Joes, and even mine can have busy days and not, today I am testing fiber optic, allows lots of feee time between tests...

[ATTACH=CONFIG]563571[/ATTACH]

I will say thanks to guys that are helping me and not bashing me, as I myself have learned and continued to do so

Stainless Marine Exhaust Manifolds. Its what I had on the Mistress, No Problems and my 540's made 680 on the Dyno and the boat ran 78 without playing with props and dialing it in.

Set up must be different than tims. Drives ? Weight ? Hull work ? Different years ? Different style SM's ?

He saw 78 with Konrads and I think 75-76 with Trs... otherwise same boat... he and I talked a lot about setupnin past

Personally I think if my engines made the same numbers they made on the Dyno, except for the torque and power band moved up to be able to carry the boat I think my speech would've been right up there with Cigrocket

[QUOTE = Full Force ; Old engines 557 ci or 565 can't remember was 4.375 stroke, 6.385 rod .060 flat tops 9,5:1, pro comp heads 320 cc, cam was 236/[email protected] and .578 lift on a 114, same intakes, hp500 carbs 800 CFm 660tq@4200, 598hp@5250 boat went 73.7@5500 flat water actually was the best speed day, might have had more

New engines 638tq@4500, 630hp @5900 best I seen 73.1 one time mostly low 72mph....[/QUOTE]


Ok i stand corrected, it was almost 2mph. I still think you would of ended up with a hell of alot more motor and mph, putting you AFR cnc chambered heads on the old 565 with even a little bigger cam than whats in your 540. Don't take this the wrong way either, just because you have thin skin. "Again not trying to poke a battle"

I think if guys would like a easy 700hp and roughly 650 too 700 tq, to check out some bigger cubic in. engines (565,572,598's). ESPECIALLY N/A.......... Those engines seem to hit that target with relative ease. There a number of proven recipes that scream those #'s to 6000 rpm.

I hope your engines hit your marks. Your just showing us all how important cubic in. is in a N/A engines. Trying beat your old 565's POWER with smaller engines has proven to be very COSTLY. I think we all have learned that here, including me.

Again thanks for putting all this out there.

What heads did you have on your 540's in that boat? Very nice looking. Sure you've heard that more than once.

Your boat responded better with the 565's.

2 different engines, with 2 totally different power bands.

Hopefully you end up with some bigger power over what you had.

man you guys are putting salt in the wound,i don,t recall tim ever saying his old engines made less power that the 540s.that,s yesterday,s news.when this engine go around is done and exhaust system is in the budget i think he will be a happy camper.