Thanks Ray, I appreciate the information.

I just sold a '90 Eliminator with a HP468 engine. 502 cu. carb model Mercury Racing engine. Previous owner installed roller rockers, and a Dart intake. Running the stock 468 exhaust headers they (Mercury Racing Engineers) estimated the HP to be over 500.

Running a three blade Bravo One prop, 1.50 ration Bravo One outdrive the boat would go 72mph (gps) on pump gas. Two thirty gallon tanks and at wide open throttle 6200rpm, I have run the boat on the Ohio river for over a half hour steady. The previous owner said the Racing Engine was designed to run wide open throttle as long as you could feed it gas. And I believe him after torturing this boat for five years with never even a hickup out of it. The leak down numbers over five years only moved a point or two even after loosing the water pump and boiling the coolant.

So, my point is if you want reliability over and above everything else, put your money into the Racing version engine now, and then in the future hop it up (blower or supercharger. )

I am looking for a replacement boat and I won't buy one with out the engine having "forged" parts. I have an Audi TT Roadster 1.8 litter 4 cyl with a turbo that produces 225 HP. With a different turbo and exhaust people are producing 338 HP. The TT 225 Quatro has forged parts while the regular TT has cast parts.

Go with the strong internals and you won't regret it.

Cheers.

My 496 has 830 horsepower... Whats the problem ?

Betitbig:

Who redid your engine block and heads on your 496 for 830HP with a Whipple? Is your Whipple the new 3.3 or the 2.3 unit? Who dyno'ed the motor at 830HP? Curious what you spent for the whole package? What drive have you hooked up to a 830HP 496? Did'nt your first 496 with a Whipple kind of unrap itself? Thanks for the answers?

Ray @ Raylar

Wildchild, I had a 496 Mag 375hp and installed a Procharger 3.5 lbs boost system. Takes about two easy days and 2 six packs.This was on a 2003 Advantage old school bottom 22 foot bow rider. Speeds increased from 62 mph to 76 mph with a Bravo 1 4 Blade 28. All I did was run 93 octane pump gas.

I would not spend the extra $3000 tp $4000 on an HO. For the same money you can get the Procharger. Dollar for dollar the 375 with Prochagger is by far the best way to go to get power form the 496. I put over 60 hours on the motor with nothing but 25 hour oil changes. I sold the rig to get a Laveycraft cat but the Advantage is still going strong. Good Luck.

830 HP even to an XR is a drive buster for sure, not a matter of if, but when

Ray,

See Betitbig's thread on the 496 CMI Headers - he describes the build and builder of two Whippled 496's.

I guess i'll just keep my fingers crossed... Easy on and easy off.

Ray,

This engine was a combined effort by Dustin at Whipple and Larry Peto in Tucson, AZ.

This engine has the 3.3 Whipple. Larry did all of the head work and internals, while Dustin spent hours dialing in the
computer.

Larry dynoed the motor running 8lbs of boost at 830hp and with 6lbs of boost at 753hp.

Money spent? Once your so far in does it matter? Let alone the time involved by Dustin and Larry. I probably around $25k into just the motor, let alone other upgrades to try and handle the power.

My first motor that yes did grenade (stock internals) is now redone also and has the 2.3 Whipple on it. It ran 640hp on the dyno with 6 1/2lbs of boost.

We've got a 3.3L 496HO in Larry's oven as well

He does some very nice stuff for sure.
Not counting the Whipple cost we are at less than $10k for ported heads, upgraded valves (inconel exh) and springs all forged internals (Raylar crank), Eagle H beams, JE forged pistons, Sendure oversized heat exchanger, roller rockers under stock valve covers....assembled and dyno'd with a 1 year warranty (at 750hp).
BTW, those dyno numbers are with the stock exhaust

Not bad