I'm looking at replacing the stock cam, the numbers with the lift/duration and rpm range have me abit confused .... i have a 350 tpi, headers, full performance ignition system and hypertech chip ... motor is fully stock as far as i know, i believe the guy i bought it from said it was ....i was also looking at getting a set of timing gears for this car, most say not to be used with computerized cars, is there a set out there where there isn't a concern ?

 

The only timing sets I've read that perhaps may not be for computerized cars (engines with knock sensors) are gear drives of the sorts. Anything with a chain won't have any effect on how the computer runs things or not.

Perhaps you are confusing the camshaft advice as far as computer controls are concerned?

 

Sorry bout that, it was actually two different questions .... i'm looking at what cams would benifit building the lower end for more power/torque .......... at the same time i was looking at replacing the timing chain with "gears" ... but all the ones i've looked into are for cars without knock sensors "computerized" .... but i have no idea what lift/duration and rpm range would be for me and what other mods i would need to complete for this ....

 

You have no need for a gear drive. If you are going for the whine effect, yea it's cool and all for a little bit. If you are going for the "like a rock timing", it's nothing a good timing set can't achieve. Get a good double roller and spend the rest of the money where it can actually get used in a positive way.

As for the cam, the more radical of a grind, the more work that is involved. I.e. when you go for more duration, more lift, more lobe seperation, the more you have to tune the prom to make it so it's happy. Otherwise the car will run like junk. An LT1 cam would be a very near direct bolt in, shy of the dowel pin needing to be recessed a little bit, but other than that, it's slightly warmer than a stock grind, and still fits under the factory provisions. Granted it could benefit from a Prom burning to make it really work. I guess the ultimate answer depends on what you are really seeking from the engine.

Nevermind the cam for a moment and all its specs. What RPM range are you looking for? What kind of power are you looking for? How much work are you willing to put into it to make it work?

Try calling a cam company and getting their recommendations as well. Comp Cams has a pretty good help line as do the rest of the reputable cam companies (Isky, Crower, Crane, etc.).

 

Ok, idea of the gears is droped .... i can see the point .... i'm willing to dump time and work into what i wanna get outta this car, and thats somewhere in the range of realisticly reaching 330-360 RWHP with this motor, bolts-on's or even if that means saving up for a charger .... some of my questions might sound stupid but getting ripped back on the boards is the only way to learn, ... i'm in the mist of gathering sub-frame connectors as the car as it is tends to hook pretty bad on launch ... thought the lower end of the motor was where to start, am i wrong?

 

Call comp cams and ask for one of their new XFI (extreme fuel injection) cams. They will recommend 260XFI.

http://www.powerandperformancenews.c...Category_Code=

 

Excellent, thanks!

One more question now, think i should replace my injectors and intake and better runners and use the next stage cam - Compcams* I have about 50-55 lbs of fuel pressure ... would this be a wise move to hold that thought and do it right ?

 

best cam is 268 h duration 268 rpm 1500-5500 it has a rough sound to it get you a faster take off more top end