hey guys .



I was thinking about how cam timing can play a part in making power down low or up high. could advancing or retarding affect the $hittycam the TBI's have?

Retarding the cam makes more bottom end rite ?

advancing the cam gives it more top-end rite?

correct me if i'm wrong.

also my car seems to pull all the way up to about 51-5200 rpm's when i hold it back in gear. why when left in drive and floored it shifts @ 4500 rpm's that last 6-700 rpm's makes a diffrence to me by the seat of the pants dyno

 

Advancing the cam moves the torque lower in the RPM range.

Retarding the cam moves it up higher in the RPM range.

In order to change the cam timing you need either a crank sprocket with three keyways (one 0*, one +4*, one -4*), or to get the offset bushings and drill the cam sprocket for them.

IMO, it wouldn't be wise using the stock cam. For one, moving the torque up in RPMs would just add to a 305's problem which is lack of low RPM torque.

And if you were to advance it to put the torque range in lower RPMs, it would just kill your top end even more than the POS factory cam does.

The LO3 cam is not a cam that you're going to notice that much of a difference anyway. If you're going to tear into the motor to move the cam timing, at least put in a better cam.