I have a '92 with an LT1, and am about to delve into my first big upgrades. The first stage, which I will be doing in a few weeks, is a cam swap. I am exchanging the stock LT1 cam with a GM cam with the following specs:

222/230 .542/.563 112LSA

Along with swaping out the cam, I am changing to an electric water pump, double roller timing chain, 1.6RR, hardened pushrods, etc..

Then in september, I am getting a set of high flow, stage III ported heads, and a fully upgraded exhaust system (headers, and a cataback system). For reasons out of my control, I have to do the Cam a couple of months before I go ahead and do the heads.

Now, I understand that this cam is definatly going to need some tuning to get running properly. I have read all of the docs on this site, as well as the docs at thirdgen on the process of burning your own chips, and it doesnt seem to hard (the actual burning process). Where I am a bit nervous is the editing of the bin file. I know that right off the bat, I am going to have to adjust my idle, RPM limit, and do some tweaking of the spark and fuel curves.

My question for you guys is, where is a good starting place?? I know that I will have to do a lot of small changes eventualy to get it running perfect, but how do I get in the right ballpark?? Is there anywhere I can find some bin files of similar setups, as a good starting point for tweaking?? Any info would be greatly appreciated. Thanks!

-Mark

 

Ditto to ski down it's advice below-start with the inj. constant to shoot for the majority of blms at 128-then with speed density its time to work on the ve tables. I'd start with the stock bin. With your cam specs I'd bump up the idle also...try 750rpm??? Go with what it'll idle smoothest at.
Just remeber to take your time-check to see the changes made and just make one change at a time! :cheers: