ken sampson

iTrader: (1)

I have listed below my build sheet so any input on cams would be great. The goal is a low Comp motor running between 3000 and 5500 RPM.

604 CI motor build sheet
Below is a list of parts for the building of three 9:1 low comp motors

Merlin Aluminum blocks 10.2 deck 4.560 bore with cam bearings
Callies magnum pro series Cranks 4.625 stroke
Oliver billet rods 6.660 length upgraded bolts
JE pistons and rings JE tool steel pins
Cleveite H race M.B and R.B
Brodix Full CNC 332 oval port heads # 2038002
Inconel exhaust and stainless steel intake valves
Comp HYD roller cam and lifters
Jensel shaft rocker assembly
Billet timing set with Cloves alum timing cover and pointer
SFI balancer
Marine head gasket and SCE lower gasket set
Moroso oil pan # 20032 with pump and shaft wielded
Alum valve covers with cut corners to clear exhaust. No logo
Brodix intake spacers and distributor oil pump drives.

Boat1

I think the heads are to small for an intial build. They are likely very good for your application now, but leave very little room for turning up the power. I'd like to see some flow numbers of the heads.

GPM

BP BB-3 XTRA O 332
(CNC Ported/ .200 .300 .400 .500 .600 .700
50° Valve Job) 2.300 Intake 153 231 300 354 396 424
1.880 Exhaust 130 177 239 278 284 290

RunninHotRacing163.1

Sampson why did you not go with the Donovan Alum 11.1 deck and use 7.5 lenght rods ??? looks like your Heads are gunna be too small ... good luck on your project need pics when ya get rollin

ken sampson

iTrader: (1)

I'm limited to HP by my ZF85A transmissions and they are the only one with a drop type trans that will work for my set up.
These are bolting to Arneson drives ASD-8.
My goal is 700HP to 750HP so I hope the cam selection works out. Do you feel I will not get there with these heads?

GPM

Could go bigger, but with the right cam, intake and exhaust those heads could make close to 800hp. The 351's wouldn't be a bad choice either, the bottom end should be about the same and they would add a little at the top. Any clue on cam specs ?

Boat1

I like Profiler Cylinder Heads 375 Sniper Full CNC ported 2.350/1.850, 24 degree, 119 cc chamber, 375 cc runner

.200 .300 .400 .600 .700
Intake 2.350 153 239 300 410 445
Exhaust 1.850 137 182 226 298 306

These heads are $1,295.00 bare, for cost comparison. The larger runner allows the engines to be turned up at a later date.

ken sampson

iTrader: (1)

I am working on a tight budget and my engine builder said they were more money.

RunninHotRacing163.1

they were more money


Yes indeed they are , good luck on your build and dont forget the pics .

ken sampson

iTrader: (1)

What type of cam is going to get me at 800HP?
I was going to use a custom grind from Comp Cams. I do not remember the full spec but I think the said a lift around 640 to 660 and duration of 248? I'm just not sure.