598 - which heads and cam for 750hp
 

I am freshening a pair of 598's and was wondering what everyone things is a good combination for this engine is to make about 750hp. I would like to see that hp in the 5400-5600 rpm range.

Which heads, flow numbers to make that power.
Which cam and intake.
What is minimum exhaust needed.

Thanks,
Rick

Re: 598 - which heads and cam for 750hp
 

Dart 355 Pro1's for heads.

You need a BIG hydralic (custom) cam, I would talk to several sources on what to run. Rmbuilder, Crane, etc.

Solid roller is easy:. roughly ~262/270 @.050, on 114 and ~.730/.730" max lift.

Shoot for 10:1 CR, (easy with flat tops) Dart or Merlin single plane and a BIG (1250) Dominator...I would recommend talking with Dean Nickerson about the Carb and cam if you go solid roller.

Wette Vette built almost this exact motor with solid roller, I'm sure he'll chime in.

You need good CMI headers.

Re: 598 - which heads and cam for 750hp
 

Here are a couple of pics.....

Re: 598 - which heads and cam for 750hp
 

Doesnt your motor allready have the Dart pro one heads ,need to ck which ones they are ,if the cnc ones.maybe see if the have the cam card on your motors.Arnt you in the low 700 now?

Rob

Re: 598 - which heads and cam for 750hp
 

Rick,
Let me know when your ready to purchase heads. I can help, like we spoke on the phone before you get to confused.

Re: 598 - which heads and cam for 750hp
 

Did a 590 with Canfield 355's out of the box, 9:1 comp., Crower solid roller that is easy on lifters, .694/.683, 260/272, 106 cl, 1-8-7-2-6-5-4-3- firing order, Dart tunnel ram with 950's and made 750 at 5800 on Zul's dyno.

Re: 598 - which heads and cam for 750hp
 

588cid, Dart 335,10.5 cr, eldelbrock victor worked over by wilson, hyd roller 268/272 .400" lobe, 850@6000

Re: 598 - which heads and cam for 750hp
 

A 335cc head on a 588cid engine....very nice power!!! :)

Re: 598 - which heads and cam for 750hp
 

Rob,
Yes they are Dart Pro 1's. Suppose to be in +700hp range but I am not so sure. The engines are coming apart this week so we will know for sure what is in there. Then the cards will be on the table to see what to do next if anything.

Dean,
I will once we get some data on what is in there now.

Wette Vette around? Sounds like a good one to compare with.

Bob, isn't 106 CL a little close for boat. I thought 112 or 114 was the number. Sounds like dry pipe application...

Thanks, everyone for the info so far.
Rick

Re: 598 - which heads and cam for 750hp
 

Rick -

Get the engines torn down and have LAM advise you. I don't know if they do all their own porting, but Jim V will work magic on those heads:

http://hometown.aol.com/valakoracehe...raceheads.html

That's where mine are going before going to my engine builder. And as always give me a call or an email if you need any assistance.