That's what makes boating truely special!!

That should make some good power. Hopefully you are going Hydraulic. the reduction in maintenance isnt huge, but in the long run they are much easier on the valve train as a whole.

The solid cam that I have is a .697/.697 262/272 @ 50 with a 112LSA. It also has the 7/4 swap. It made 800hp at 6300rpm in a 598ci.

Phil- didnt you end up needing a vacuum pump?

I remember talking about your monster BB earlier.

I would think Ken should likely provision for one as well.

"Uncle" Dave Sampson

Nope, the blowby I was getting was crazy. Even with 6" breather extensions it was still blowing a quart of oil out every two hours or so. I was thinking of installing a puke tank or a vacuum system to help with this problem that was, as per the builder, "just a little crank windage".:lolhit:

Best thing that happened was dropping a valve and forcing a rebuild. When i picked the motor up from Rudy Dryden last June, he handed me a bag full of the breather extensions and said "I dont know what you want to do with these, but you dont need them anymore." Turns out the top ring gaps were HUGE, and all over the place, resulting in 12-15% leak downs at 59 hours and massive blowby. After Rudy rebuilt it, it blows by ZERO oil, even during long WOT runs. What happened to the windage?? I dont know either.

So no, no vacuum pump for me, just a competent rebuild job.:coolcowboy:

Congratz BIG Daddy :drink: Rudy knows his stuff and he just finished another 1 just like yours that was Brand new & came from here in ill .

Ken you'r gunna end up with 250/258 @ 50 112 :ernaehrung004:

So are you also thinking less lift? I know when I talked to Bob he said 114 to 115 plus 6 LS due to the EFI set up.I'm not sure what the plus 6 means.

Advanced 6 degrees in the motor.

The plus 6 LS probably means a six degree lobe separation split between the intake and exhaust centerline. A 114 LSA camshaft as an example, would be 250 degree Intake / 256 degree Exhaust @ .050 lift (Thus six degree split) then the intake centerline would be at 108 degree and the exhaust centerline at 120 degree (Thus six degree split) for 114 LSA. I'm just guessing about his terminology, but this is common for custom camshafts. I don't use Bob Madera (Marine Kinetics) for my camshafts, but I highly recommend him for his knowledge and ability to provide competitive pricing on components. I would definately wait for his recommendations and compare them to the Crane info. He has extensive marine experience. Good Luck.

The plus 6 means there will be 6 deg. of advance ground in the cam. That means a cam with a LS of 114 will have an exhaust centerline of 120* and an intake centerline of 108*.
Eddie