[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

[rmackintosh]

ps., yeah, Lonnie, why not Mobil 1? I don't see any problems with it, and neither did the guys at F-Body Central when they pulled the heads for the head gaskets....

Oh boy.... Probably has something to do with his blown up motor on Mobil 1. Or maybe Kevin Howell's blown up motor on Mobil 1..... Or maybe Beecher's blown up motor on Mobil 1. Or any of the little things I've had happen with Mobil 1 like excessive usage that lessened or stopped when the brand was changed.

Come to think of it, the only LT1 or LS1's I've seen pop were on Mobil 1. I don't know what McGeorge runs in the MR2, but I'd bet it was Mobil 1 and Tim had the same problem in Peru that the V-8's did...... (IMG:http://www.frrax.com/rrforum/style_emoticons/default/dry.gif)

The fact the engine is clean means the oil has detergents. Good, but not protecting the engine per se. (IMG:http://www.frrax.com/rrforum/style_emoticons/default/smile.gif) Basically, you've been luckily (like most of us) to not have a problem that really would stress the oil film. Synthetics are about protection (and a little power too <g>). I don't expect you to have a problem just because you on on Mobil 1. But I'd expect any problem that might occur to be more serious than it should be. MHO and only based on my experiences, which are numerous. (IMG:http://www.frrax.com/rrforum/style_emoticons/default/biggrin.gif)

....yeah...I have a similarly low opinion of Mobil 1....and I have taken a lot of S#%T for it around here... (IMG:http://www.frrax.com/rrforum/style_emoticons/default/tongue.gif) ....but I used it for 2 track days and it came out THINNER than water if you can believe it.... (IMG:http://www.frrax.com/rrforum/style_emoticons/default/blink.gif) .....don't use it anymore.....