[Tommy R]

Hey you all,

I'm looking for information on 4th Gen F-bodies. Specifically, I'm interested in the diff options, gearing differences (rear end and tranny), 1LE vs. base model specs, and any other differences from model year to model year.

For example, I know the '93s are speed density, not mass air. Are there any differences there from a performance or maintenance standpoint? The '93s also had a slightly different T-56 tranny, as I understand it. Were '93 and '94 models not available with 3.42 rear gears? Would a 150 mph speedo indicate that the car has 3.42's? No governor? I remember my old roommate's '94 T/A didn't have the "GT" package and as a result had the 115mph speedo, governor, and maybe even 3.23 gears (instead of 3.42s).

I know in '96 they went OBD-II with dual cats. They're also rated at an insignificant 10 hp more than the '93-'95 models. Of course, in '98 the LS1 came out with much more power. However, the LT1s are obviously still very compeitive in F-Stock, despite the power deficit, iron block, and smaller front brakes. Any particular reason for this? Or are the right people just not running LS1's? (IMG:http://www.frrax.com/rrforum/style_emoticons/default/unsure.gif)

So, needless to say, I'm intersted in LT1 vs. LS1 differences, too. But, I'll likely stay with the cheaper candidate, i.e. the LT1.

I should point out that I'd mainly be interested in F-Stock, so update/backdate concerns are of less importance. I'm not sure if/when I'd move to ESP.

Thanks in advance,
Tommy

[y5e06]

What?
Tommy are you thinking of moving to an F-body???
When did this come about? LT1's make great FStock cars. Originally I was unconvinced of this until I put some seat time in Franks LS1. After that experience, whether its setup related or not, I really like my car much better on the cone courses. They're also more affordable!
I can answer some of this, I'm sure others will fill in and/or correct me:
'93's came with either 2.73 rear gears and the M28 3.36 1st gear t56 (less desirable and less common)
or 3.23 rear gears w/ the M29 2.97 1st gear t56.
All '94-'02 cars had the T56 and 3.42 rear gears, 1st, 2nd, 3rd, 5th, 6th were different ratios than the '93 trans. (can't recall the numbers) although the LT1 & LS1 transmissions are not interchangeable. There are other gears and such with automatics but I don't even pay attention to those.
If I were shopping for an LT1 to eventually modify I'd stick to the '94-'95 LT1 due to the MAF vs. speed density and the OBD I vs OBD II, but thats just me.
1LE's are interesting cars although they aren't something to hold your breath for in finding. base Z28's and Formulas will do just fine.