850/900 hp
 

I am at the design stage of building a new engine for the Daytona.
What would your build consist of. Money is an issue but do want good parts but not overkill. I will assemble the engine myself after all of the machining is done by a local shop I have used for over 20 years. I have built performance engines for 35 years.
It will be natural aspirated, roller cam, tunnel ram? F.A.S.T.
electronic fuel injection.
What cubes - 598 or 632?
Plan on using a tall deck block.
I have dry exhaust so cam overlap is not an issue.
Would you do the firing order swap?
Thanks
Steve

I would buy a used engine that the owner has already sunk double the amount of money into than it is worth. Then you can pull apart, inspect, and still be ahead of the game.

I have been looking.
Boat forums, racing junk.
Where else should I look.

Sounds like some high dollar parts,

Tink , I just reread your post and see your goal is 850 - 900 . A blown 540ci would be more like it for your horsepower goal .

I agree 100%, blown 850 or 900 can go 200-400 hours (if its not a Mercury) these days,

I would suggest if you are going NA use a big tunnel ram intake with as much volume (bath tub style) as you can! At high RPM the cylinders have a larger amount of atomized fuel to pull from, 5800 and up rpms. dual quads for sure! either Carbs or T/B. IMO

Your biggest power gains in a N/A motor will be in the headwork, make sure you have the heads done at a reputable shop as it will be the most critical part or the HP equation again JMHO.

Good luck

NO blowers - I have Pro 1 heads set up by Jim Valakeo now. May need a bigger set or have these hogged out.

Then go with a 705cu inch setup. Randy at cobra built a bunch of these years ago.