Im smacking myself in the forehead trying to find a new valvetrain setup for my car...

Right now I have a Hotcam Kit on a stock bottom end, stock heads. I plan to be moving up to a nitrous cam in the near future

What would be a good combo of Pushrods, Lfiters, and Valvesprings to run that will work for either cam? I'm not doing anything too radical and I'm only revving to 6200 right now.

I think i have a bent pushrod cuz my car makes no power past 5800, and all my other options have been expended. Ideas?

 

I went with comp cams 987 duel springs when I had my heads ported. These springs are good to 0.600 lift cams but require machining of the spring seat to fit a stock head. Comp cam makes a spring that does not require machining though. Call combination motorsports. They can set you up a combination that will work best for you. You do not want a spring that is stiffer than you need or has too much seat pressure either because it adds to unneeded valvetrain wear especially on the lifters and valve seats. I think stock lifters are fine up to 0.600 lift. I would buy stronger pushrod going over about 0.575 or so.

Jeff D

 

i bought some Chromely pushrods, guideplates and 850-16 Lifters when i do my swap....I just figure, if im already there, mind as well change them damn things...good luck. TT is waiting for u.

 

The rockers that come with the HotCam kit are self-aligning so there's no need to replace the pushrods unless they are bent (roll them across a piece of glass for an easy check). The lifters shouldn't be a problem either and I'd only replace them if you have very high milage, they are obviously collapsing or making excessive noise, or they show bad signs of wear upon inspection. The springs depend upon what type of cam you are running. Decide on the cam, then decide on the springs. For most smaller cams I'd highly recommend the CMotorsports spring kit. Good to .600" of lift, 130 lbs at the seat when installed at 1.8" (using stock valve seats), they are also very lightweight, inexpensive, and work flawlessly with stock heads. If using a larger cam you might find you need more spring however, in which case you will more than likely be removing the heads for some high performance machine work anyway.

Your high RPM power loss could be anything. I will say that the springs provided in the HotCam kit are marginal at best and *could* be the problem.

 

Tru

I'm gonna check Fuel Pressure and Volume, Make sure nothing is wrong with my fuel system at WOT.

If that isn't the problem, I'll be going through a detailed inspection of the valvetrain.

Then who knows, I will have no idea where the problem is if I can't find it in those two areas.