cam specs

[Cobain03]

whats the specs on a stock 289 cam? non hi po.

would switching to a edelbrock performer cam be that much difference?

 

[Edbert]

I do not recall the specs offhand but I was AMAZED at how tame they were. IIRC the duration at 50 was around 180-190 for the C-code and lift was about 0.4...simply pathetic!

So yeah, the regular performer cam, although considered an RV grind, WILL wake it up quite a bit, particularly with a decent intake and some small-primary headers.

 

[Cobain03]

i have a performer intake as well as tri y's. if the cam would be a good choice then i might as well get the edelbrock performer heads too.

 

[Edbert]

If you are willing to spend the money for the heads I'd suggest getting the "RPM" versions.

Edelbrock claims 367fwhp with a 5.0 and the RPM treatment. That is almost twice the stock power

 

[Cobain03]

how would the rpm heads work with the regualr intake and cam?

 

[5.0ina66]

The stock cam is .368/.381 lift, 184/189 dur. & 109LSA. Teeny Tiny! If you want to make power, ditch the Performer intake. A PerfRPM (or a Wieland Stealth), a set of 1.9/1.6 valved PerformerRPM heads and a Comp XE-series cam would do nicely.

 

[Cobain03]

keep in mind this car is driven alot! i dont want it stalling at a stoplight (3 speed auto tranny).

 

[5.0ina66]

LOL...with any of the modern street cams, you won't have any problems like that. I'd use a Comp XE256H or a Comp 262H with those heads and a PerfRPM intake On EA3, it made 355hp & 340tq with an XE256H cam. Not quite to the 367hp advertised, but that's a 302, and you have a 289.
HTH
--Kyle

 

[Cobain03]

say i stick with stock heads... which to choose?

 

[steel1212]

if you stick with the stock heads go with the smaller performer cam. If you pick up the rpm heads get a bigger cam.