i was on my home from school yesterday and i saw a 93-95 z28. i didnt talk to him so i dont know exactly what he had. i was approaching a light and he pulled up next to me. then he started powerbraking. i would have but i dont know how in a M6 lol. anyways, i figured he want to make a run so i reved back at him and it was on. i misjudged the light so he had a length or two on me at first but once i hooked i took off. flew by him halfway through second. didnt even take 4th to smoked him. i had to be w/ no exaggeration 20 lengths ahead of him midway through third. he came up next to me, gave me a thumbs up and i got off at the exit ramp.
just a little story.

P.S. The LS1 had to be the best use of metal EVER created!!!!!!!!!!!!!!!!!

nice kill dude but fi you pulled up next to dougs car or even my car for that matter be prepared to be looking at brake lights and my car doesn't have that much done to it. The LS1 is a good motor don't get me wrong but put a set of heads on that flow like they do on a lt1 and be prepared for what you have opened up! sorry its got nothing really to do with you it just upsets me that there are some ls1 owners that think god himself created that motor. I am building a 383 or 396 (haven't decided yet)motor right now that should put down high 500's to the wheels.

i didnt say it is a godsend i was just saying that i love the motor.
sorry if you were offended.

the motor sound sick.
when its done we should meet up.
as long as your cool about it im willing to lose a few.lol

and this isnt meant to upset anyone but, ive gone up against like 20 LT1's
and ive won 19 of then. some were worked and other not. the one loss was because i thought there was a cop down the road and stopped before 2nd gear. (turns out it wasn't)

well, as far as baseline is concerned, i definitely think Stock for Stock the LS1 will definitely beat out the LT1, but after mods, it's all up in the air (as is with most any fair 2 engine matchup). I also am inclined to believe that if you put an LT1 up with an LS1 with the same mods the LS1 would probably take. Anyone else have an opinion on this?

I think that would make sense. The LS1 is newer and more advanced (?), so it makes sense on paper. But it also depends on the driver, and what speed the race starts at.

always started from 0.

I'd like to see the race play out, i'd like to be the driver of the LS1 car in that race too. But one has to consider that the mod list is differet enough that its not really fair to compare the two. The best example i can think of off the top of my head is the air lid: LS1s gain 8-12hp avg from onna those, and they dont even exist on an LT1. and even if you swapped the entire air intake on both motors, there is more hp to be gained from the LS-series.

Here's a post from a long time ago about these two engines.....LT1 vs LS1 Engine's just get better all the time.Technology waits for no motor.

good link Tyler, fun to read. I didnt realize all that was different! Sheesh.. Do you think that if i upped my LS1 compression to 10.8:1 my RPM redline would be lower? or since i have bigger, um, everything, that my red-line would stay close to the same? Motor is pretty well stock except for Air intake and valve train.

The compression ratio thing is a rule of thumb. I would think it would take a significant amount to make much of a differance.

oh no i am not offended by youi just hate to hear the guys that praise the ls1 as the be all of end all motors. To be honest it would be cheaper for me to build an ls1 and put it in the 94 i just bought but it won't have the grunt down low like the lt1 has its a smaller discplacement with a shorter stroke hence the higher redline. and the nice thing about the lt1 any smallblock chevy components will fit it so it fairly cheap in that matter the only thing that would take some work to use is the heads from an early small block. My buddy's sportsman motor in his dirt modified made 460 hp at the crank wit 520 ftlbs fo torque at the crank witha 2 barrel carb and those were untouched dart heads out of the box with a edelbrock 2 barrel intake 358ci. i guess what i am trying to say is that if you put a fully ported set of heads, cam on an lt1 and tune it it will produce what an ls1 pumps out if not more and both motor would be very similar in head flow characteristics and cam selection. I am not offended by you and i would be proud to own an ls1 and i am still toying with a heads and cam ls1 for my 94 but it think the stroked lt1 would be alot of fun and a good conversation piece. GM said it best the lt1 is years and years of R&D and a combination of the best of the best over the years of first generation smallblocks and its the best they have ever produced. they wanted to leave that series of motors that way it was a good end to the run i guess and now they have started all over again with the ls series the ls1 ls6 ls2 and now the ls7 now that i may scrap the lt1 stroker for i just can't see spending 15k for a crate motor that you still have to buy all the electronics for.

yeah i would like to schedule a get together for the group here at the F.S. i think it would be fun to put faces with these names and check out each others rides it may take a year or 2 to get it together but it would be worth it.

all i meant was stock for stock the LS1 is faster, IMHO.
w/ mods im sure the LT1, in fact im positive that it could beat almost any street car out there. but that goes w/o saying that if a modded LS1 went against a modded Lt1 i think that the LS1 would win . (assuming drivers are comparably skilled)

i apologize if i started a little battle. in the future ill refrain from comments like that.

oh no don't refrain i just had to vent lol its been building up inside me and all out modded an lt1 will take an all out modded ls1 they are more stable block wise. the ls1 block being aluminum wil flex and actually rob hp under the extreme forces of a fully modified motor. Did youknow that on a dragster the forces ar so great that on the topend of the track the crank can flex as much as 20 degrees out of rotation from one end to the other. that just amazes me.

wow didnt see it that way. thanks, learn something new everyday.

I LOVE my LT1 but facts are facts and evolution doesn't sleep! The LS series is the best thing to come along in years!!! The LT1 was and is a great engine but I will take any LS series small block over it if given the choice.

Sure I have my LT1 built pretty good but I know what an LS1,2,6,7 can do. They are all awesome.

Doug

I think a F.S. meet would be a great thing! we can have a meet and a day at the track! Make a 3-day weekend out of it! Question is, where?

there are no tracks up here and its too cold!!

Maybe y'all will hafta come out to California!!

a lil' far for me!! lol

u cant beat the facts for daily driven or street cars the ls1 is gonna win in a even mod list even driver.
93formulabird ur car a fast one as it is is running times achived by a complety stock ls1. with equal mods the ls1 would be runnin low 12s high 11s most likely. so though the lt1 is a great engine, for what we use it for most of us any way the ls1 in speed battles gonna win.

However,most of the time bolt-on's simply make the LT1 even with the LS1. Modded an LT1 is not technically ahead of the LS1...and they run pretty close then. When they are spec'ed out even they run about even.

I was under the impression that the LT1 could take lots more boost from a S/C setup because the iron block is heartier than the aluminum.

That's probably true.

not to sound rude but find me an automatic ls1 stock that is running my times on street tires. I put down 350hp to the wheels through a 3000 rpm stall covnerter thats pushing about 400 or so at the crank maybe a little more. my car should be in the mid to low 12's but i am afraid of breaking the rear with slicks. the track near me, lebanon valley dragway (dragway.com) runs saturday test and tune and sunday eliminations i would love to run englishtown also. maybe by the middle of summer i will have my motor together for the 94. And yes you can build an lt1 more than an ls1 dollar for dollar. The lt1 block is much stronger than the ls1 block (steel by nature is stronger than aluminum) why do you think everyone that is seriously building a LS series motor wants teh 6.0 liter truck block i mean sure its got more cubic inches but its stronger.

Not to be rude either, but I dont think anyone is saying that aluminum blocks are more robust than iron, nor refuting the fact that it is possible to modify an engine to perform beyond it's stock limitations. One thing to add about aluminum is that, while it's not necessarily as strong, it is also quite a bit lighter. I don't have specific weights. Maybe someone can provide those numbers. I also think (by virtue of numbers and stats) that if you take an LS1 and an LT1 with the same mods, pulling the same weight loads with the same tires, the LS1 will most likley take (unless driver error). Please correct me if I am wrong. As for the stipulation that you can build an LT1 for less $ than an LS1, that is possible... i suppose that a part might be a % more for an LS1, but we're not talking about cost...we're talking about baseline power.

Ok guys, now that's we've established neither one of you is trying to be rude, let's settle down and keep this conversation civil. Ok?

Oh and 93formulabird - the time you're talking about the LS1 running stock, is that the 13.1 in your sig?

I thought that the conversation has been rather civil

Your all ok. However,you really cant mod the LS1 the same as the LT1. Take the rockerarms for example. The LS1 has what,1.7 ratio roller rockers? You cant make that mod ever cause the most I know of for the LT1 is a 1.6. If you make the heads flow exactly the same,with the same size valves,and the same cam specs,and the same intake air flow and exhaust...they will run about dead even. The LS1 is technically ahead from the begining. When you mod an LT1 your just closing the gap to the LS1.And they run close!

They are both great motors.

thats what i was trying to say that if you level the playing field the motors are almost identical. And yes the time i was talking about is the 13.1 the fastest i have ever seen a stock ls1 go is mid 13'sI thought i was being civil too. lololololol. yes they do make 1.7 rockers for the lt1 and thing that is made for the small block chevy will fit the lt1 or you can make fit with a some work.

wow did i start al this? lol both motors are awesome and are the best of the best for there tie the ls1 wil out run a stock lt1 but even out the specs and the lt1 should produce more if anything the same as the ls1.

There have been some bone stock LS1's that run high 12's when condition's are ideal.

now here's a question for everyone do i build the lt1 or do i buy the lt5 that i am looking at i can get it for around 4k complete! that to me is amazing.

4K for an LT5 ZR1 motor? Get it! That being said they are expensive to mod and get parts for. But one hell of a motor. They are a sophisticated as any motor.

Your car would be rare with a ZR1 motor in it. Is it the 385HP version the 405HP version?

Doug

the 405hp 4 bolt motor its complete wiring and everything the problem is i want to go after the fastest NA LT1 auto record so i am kinda stuck if ya know what i mean. and its not a true gm motor it was designed and built by lotus.

ok get the lt5 or let someoneon here know how to get it that is a nasty motor

its already gone i waited to long
so now i am stuck going to the 383 but i think i got sponsored so i may nothave to pay for any of it!!! hehehe