Am I Going To Be Happy With This Camshaft?
Cam And Lifter Kit [CL390171] - $603.00 : ISKY Racing Cams, Do It Right
Hyd.67- Valve Lift Int/Ext. 0.465
- Valve Lash Hot Int/Ext. 0.000
- ADV Duration Int/Ext. 270
- 0.050 Duration Int/Ext. 221
- Lobe Center 108
That will work very well out putting around town with some spirt.
Promaxx shocker 170 cfm heads and PRW stainless roller rockers. 1:6 as per B3RE suggested along with his correction kit. I read PBR's write up about these heads and I see that not much flow increases between .450 and .500 lift.
Is it a safe assumption that lift beyond these numbers is a waste if not undesirable?
Yes and no. While there isn’t much additional flow to be had, the head is still moving air so it’s all good. When I say no, it is possibly because the air flow through the head tanks, falls off a cliff. IIRC, this is not the case with those heads. Another reason I say no is a few times, I have seen springs not up to task with the new lift height.
The reason it is desired is that the valve see’s the max flow point twice. This is not a big power getting move and on the street you’ll never know. On the track, a number of guys swear by it. Personally I see no point in the street.
I realize there is more to it than just lift. I'm running 3.91 gears. Auto (904 or 727) with stock converter hopefully.
The big thing here is:
1: What is the stall of the converter(s)?
2: Tire size?
while it’s good you have 3.91 gears which enables you to get away with a low stall, it just that IF the stall is too low, you’ll ether take off slow or worse.
I personally like the 904 idea. Your call.
I heard that!!!
67 Barracuda at basically stock weight. I have Doug headers and late model 340 manifolds. My intake options are basically stock manifolds. My best available option is the aluminum Mopar stock replacement square bore with a 600 cfm double pumper.
I’d run the headers over the manifolds for power reasons.
Ditto on the intake manifold. At least it is a weight savings.
At 600 cfm, you’ll be fine. A member suggested a 20-25 hp gain with a 750, I do not believe this at all even though that is what I would suggest to run.
However, if you already have these parts and funds are low, just run it and don’t worry about it.
I'm willing to step things up but its just going to be a grocery getter that blows a few doors off on the way.
I am not trying so set the world on fire. I just want to have some spirited driving.
I think you have it. I don’t know what you are expecting, but I hope it meets your expectations.
