496 Stroker Crusader Gasser Results

[John Nardi]

OK guys...Just got back from seeing my engines Dynoed...Pretty must all good news...They didn't blow up...I have to admit, having always had Diesels in my boats, I really don't know much about the individual pieces of the puzzle that allow different components of a higher performance engine to function correctly...As an example, I can probably get another 50 HP if wanted from using a Holley 800 double pumper Carb, but I would need a high performance intake manifold to accomplish this...That being said, this is what has been accomplished with an Edelbrock and the factory Intake manifolds: The Torque curve is consistently 500-525lbs throughout the entire 3000-4000 RPM range...The HP is as follows:

3000 300/525
3100 307/525
3200 317/524
3300 325/525
3400 335/525
3500 345/521
3600 354/520
3700 363/520
3800 370/515
3900 373/505
4000 368/487

Only question now is what the fuel scans will read at cruise!!!!

[bob lico]

excellent torque curve due to 496" being a "stroker" back off to 3000rpm for fuel economy -----it is all about Torque !!!!! in a 13,000 pound boat,hp is for race boats with a small amount of hull left in the water.

[John Nardi]

I'm hoping you are (And probably are!) correct Bob as I would love to run 3000-3200 and not have the secondaries sucking enormous amounts of fuel...

[John Swick]

What about the 383 Mag Stroker motor that Mercury is putting out?
Very close hp ratings.
I know, not as torquey, but dimensionally an easy fit, and 200lbs lighter....
Would love to hear thoughts on this from the board.
Thanks,
John

[bob lico]

i wish you would have ask me as to camshafts when you built this 496" Hopefully you went with a marine roller cam. you never have to worry about ZINC additives in the oil.and increase low end torque. with fuel injection you can equal diesel fuel economy . you will easely exceed a 4 cyl. yanmar in performance at low fuel economy rpm.remember start up run fifty hours and dump oil. remove oil filter cut in half take photo`s i want to see residue than fill with vavoline with either zinc additive or VR-1 raceing oil 10w-30.
An 383 is good but lacks the torque UNLESS you go with 6 liter LS small block. same SAE # 3 for you gears but you will need a small computer mounted in engine compartment now you have sensors and fuel injection.the best of both worlds.

[bob lico]

those who PM`S me this is a Cummins OEM. oil relocation kit as you can see the kit comes with the best connectors made and Coast Guard Blue hose.you have to click on photo to see completely

[Tony Meola]

Bob are they all standard or is there a Part Number?

[bob lico]

tony there are many knock offs that can be used in car,truck installation but the " bomb-proof" oil relocation kit i illustrated is a Cummins unit with bullet proof oil hose fittings, Can you imagine if a oil hose let go while underway! Cummins only makes one for 6BTA/6CTA.

[bob lico]

forget all of my post above counterrotating engine is not what i had in mind all bets are off.I am in disbelief A speed shop/machine shopwould go along with this.