|
With the hardware you listed, you're looking at an engine that can handle a pretty tall cam, one that can be too much for the street, especially with a 3500 stall converter. If I were you, and I know you want to save money, I'm afraid those roller lifters have to go, especially if they are used. Used lifters of any type on a new cam are a no-no because worn lifters will not break in the cam profile properly. Buy a new hydraulic cam with some high rev lifters. You CAN mix and match manufacturers as long as the parts are NEW. Take a look at P.A.W. for some good deals, but NO regrinds! they have a reduced base circle that will affect valvetrain geometry. With those heads, gears, and converter/tranny combo... let's see... probably something in the low 300's for duration and around .500 lift with no more than 112 degrees of lobe separation should be an eyeball-flattener. But DON'T make the common mistake of running a stock HEI ignition!! The advance curve is difficult to change and will not complement the cam/heads/gears combination. My personal favorite is the Mallory YL Unilite mechanical advance. That one gives 32 degrees out of the box, and there's a graduated tab inside that you can bend to get more. I set mine up with 8 initial and 34 inside for 42 total and it's all in by 3600 RPM. Sweet. Makes for a real screamer, and the throttle response is like firing a .357 down a tube. Use a SINGLE plane intake with this setup so that all the ports have equal access at high RPM. I'm kind of against the Victor jr. though, it's too peaky and doesn't come on until about 4500 or so. I prefer Weiand manifolds, they have a different plenum design (that's the space under the carb inside the manifold). Whatever manifold you choose, you will want to play around with the amount of spacing under the carb. This will make a BIG difference if you get it right. My guess is your combo will like a 1/2 inch spacer, but try 3/8 and 1 inch also if you can. These are a dime a dozen at auto swaps.
One more thing-- if those rocker arms are used, turn them over take a look at the wear in the pushrod cup. If it's more than half way into the hole (less if you ask me) they are too worn to run.
Good luck, and good hunting.
|