To the original poster sorry for not starting a new thread !!! For those i offended sorry also !!!! For those who gave me an answer thank you kindly for your input

 

In this case he probably did the right thing as it was the same question with just a slight difference. It would have been weird seeing two threads, one after another, "LT1 vs. LS1" and then "LT4 vs. LS1" when they can be easily be answered here.

But to the original poster. You seem to care WAY to much what people on the internet think about your car. You have an LT1, be happy. Sure it's not the fastest car in the world, but they sure as hell are fun.

I also suggest you actually take your car in, or get pictures to actually see if it's a 383 before you go dumping it for an LS1.

 

For the way I drive, my LT1 fits me perfect I don't drag race and almost never street race. I just use my formula for grunting through traffic and getting sideways on occasion, and for that the instant, brutal low end hit is perfect. For keeping folks from cutting you off, or trying to squeeze you out on lights or freeway on-ramps, I've never had a rig yet of any kind out punch me for a spot For me the LT's powerband is perfect, and honestly I wouldn't trade it for a peakier engine with more power, cause I rarely wind mine up tight enough to matter. If I do any mods, a big part of what I do will be greatly affected by what it does to my low end.......cause for me, just like my bikes, I prefer a big juicy low end over a peaky powerband in my cars

 

Holy **** 317HP and 335tq at the wheels? Is that freakish or normal? Thats faster than the new Mustang GT by far.

 

I don't think it's out-of-the-norm for an '01/'02 LS1 with a T56? I had previously dyno'd the car when I still had the original 4L60E (yes, I did a 6-speed conversion) and through the A4 and 4.10 gears, the car dyno'd 289 RWHP/307 RWTQ.

Yes, that's a 28 RWHP difference from the A4 --> M6!

Faster than a new Mustang? No ****!! Did you ever have any doubt?

 

You can find a video of ANYTHING. One video is far from definitive proof of anything.

 

I have a 1999 Z28 with 72k would that dyno near the same or were the 01 02 faster? 6 speed too. Its fully loaded. And wtf is wrong with Ford? How come the new mustang GT's are STILL slower?

 

Stop talking about me! I know I got a good deal

 

Fine, I won't provide any evidence then. Less work for me.

All other things being equal, stock LS1 F-bodies perform than stock LT1 F-bodies in EVERY measurable way. LT1s just feel faster off the line. It's fine to prefer them because of that, but it doesn't make them faster.

 

I would have to concur, as I owned one, a high mile one at that ('97 LT4 Firehawk), that I believe would have ran very close or a little quicker. I'd say for argument's sake, to drive one felt about the same as a strong running LS1 with perhaps a catback & lid.

Back to topic, I agree with 5-6 tenths quicker for 1/4 mile on the LS1 cars. With even normal bolt-ons, I've been reeled in by LS1 cars in the past. It takes quite a few bolt-ons to keep pace with most LS1's at the track, unless they simply cannot drive for sh*t.

Edit - I think it should also be noted, that very similar to the LS1, the LT4 was indeed under-rated just a bit, and also revs nearly 1,000rpm higher than a stock LT1, as placed in those fbodies. That is/can be proven, as I did so many times prior to selling that car. Breathes very well. With that said, horsepower numbers will vary slightly throughout all those production years and models, and '01-'02 LS1's also came w/LS6 manifolds didn't they? And some w/LS6 heads as well...can this be confirmed, or was that just some GM Hi-Tech hype? I believe the casting numbers proved this. Some of those cars were just plain factory fast - the LS1s were brutal as-is.

 

Then in my opinion, for you, this is what I would do: 3.73 or 4.10 gears, stock converter, stock manifolds or small tube shorties w/catback, and a cold air induction.

 

Nobody ever said the LT1 is faster. Calm down, nobodies insulting your unbeatable LS1.

 

Yep I don't think anybodies saying a stock LT1 is faster. But for me personally I prefer the LT1's characteristics more. But I've only driven one LS1 and it was pretty much stock like my 95 formula. If you could combine the LS1's top end power with the LT1's bottom end I'll be all in on that one

Thanks for the info Green I'd like to mod my car abit....but honestly my modding experience is mainly with bikes. I do know that with engines in general its hard to have the ultimate top-end and ultimate low end in the same engine, its always a compromise. I've learned through bikes, and abit through cars, that I prefer the big low end hit as long as it pulls consistent all the way through. I don't need anymore soft bottom ends, then the big high rpm hit, the motors don't last as long cause of the r's you need to run to get the power.....and in real world driving sometimes they can be more of a pain. Of course if I was a racer my opinion would be the opposite lol. But I'm def gonna save your info for future reference How would 3.42's work for me you think? I don't want to give up too much mpg

 

Smoken an Ls1 is just about as good as a mustang these days.

 

lol why would you want to race another camaro? And what would be the realistic dyno on my 1999 Z28? 72k miles. Would it get 310RWHP? its a 6 speed btw