I was thinking about getting a new cam for my L98. what I was wondering is.. how much cam can I put in my car without having to burn a new eprom? also what about alluminum heads with bigger valves? will I have to burn new eproms to get any power out of them?

check the sig thats the besat i could do under a hypertech chip

I was told by Comp cams that with a MAF tpi setup, the largest cam that can be used with the stock chip is around 206/212 @ .050" with 114 LSA. I have seen people run larger cams without problems, but this was the largest cam that they could be SURE would work.

You may want to call them up and see what they say...or buy prom burning goodies and run any cam you want.

-peace

Honestly It would probably depend more on what your starting with..

For example:
If you start with a 305 TPI with an A4, you start with the Peanut cam 179/194 I would venture to say you could go with a 206/212 without any problems. I did it, no prob...

If your starting point is the 305TPI M5 or the 350TPI with the 202/207 stock cam, the 206/212 Will be a minor upgrade, I would assume you could even go with the 224/230 that SLP makes for L98's. Give SLP a call, I have NEVER been disapointed with their stuff. They MIGHT even have the chip available to properly tune your car.

John

That SLP cam is not going to work without some custom programming. An off the shelf chip will not work either. It will run but will be rich at idle, the spark curve wont be right through the midrange, and the idle will be bouncy until you figure out how to adjust the TPS and throttle plates just right, and even then its going to bounce around about 150-200rpm.

On a stock chip, I would not go more than 218@.050" on the intake, thats about the limit. If you go with aluminum heads, you should really be looking at a custom chip anyways since the timing curves will probably have too much advance. Programming a chip is not an absolute must, but if you want the most out of the setup and want it running properly, thats what you should do.

Madmax,
which cama re you referring to. The 224/230 one, SLP also offers a 218/224 cam

part #s for SLP cams
SLP Part #
Part #. Duration ... Dur @ .050 .... Lift .......Centerline
........... Int. Exh. Int. Exh. Int Exh
51002. 258 264 .... .206 .212. .480 .487 .... 112
51006. 270 276 .... .218 .224. .495 .502 .... 114
51010. 280 288 .... .224 .230. .502 .510 .... 112

hmm.. that seems to be garbled, Go to http://www.usol.com/~okfoz/all%20years/slp_cam_data.htm

hope the link works

John

This one:
51010. 280 288 .... .224 .230. .502 .510 .... 112

so.... by reading this I'm guessing if I put in a cam with about 215 duration I would be ok, just not getting all of the performance out of it till I get a new chip?

Thats why Im running my stock cam.

When I put the 206/212 cam in my bird it only had the LG4, when I converted to TPI, I used an 86 chip and was...DISAPOINTED... Seriously. Only after Began programming have I noticed a BIG difference. I could not even powerbreak before. Now, everything the same, I can really smoke my tires...

Learn to program, its a pain in the beginning, and I know very little about it, but from what I have done and the results I have gotten are out right phoniminal.

John