A stock LS1, it's comparable for sure. He's got decent mods and the LT4 is stock, so the LS1 is going to walk away from the LT4. Unless you really jack up you launch and mess up shifting, enjoy taking his money.

 

My last car was a 98 T/A 6-speed. My current car is a 96 LT4 Vette. It is BS to say a Vette's IRS hurts it at the drag strip. It is better unless you are talking about cars that make like 700rwhp+. I could never get below a 2.0 60' with street tires (even 315s) with the T/A. It was tough to do that! With the Vette I could consistantly get 1.9x on street tires. It was fairly easy. With the T/A I had real trouble keeping the car from going sideways on the 1-2 shift. The Vette does that a little only with powershifting.

It is true that ALL LT4 Vettes are 6-speeds and only made in 1996. It is also true that they are underrated like the LS1s. Most stock LT4 Vettes make 300rwhp. My Vette with stock trim weighed 3300lbs. It is the early model C4 that were lighter.

The LS1 pulls better above 4k rpm. I think the LS1 car in the case has the edge if both drivers are at the same skill level. The 4.10s are going to help a lot. To get a stock LT4 Vette in the 12s, you have to powershift AND be a great driver. Most Vette drivers can't do that. The first time I did the 1/4 mile in the Vette when stock I got a 13.0 @ 106mph w/1.9x 60'. It is just an easier car to drive for me. I know a lot about fbodies as have owned them prior to the Vette for about 15 years.

My vote goes to the LS1 for this race and I bet the Vette driver gets a 13.3 @ 105mph.

 

my car is slow and i can't figure it out.

 

Didn't have time to read the whole thread but i didn't see anybody say it was an LS1 f-body vs LT4 vette. Didn't certain SS get lt4's, pretty sure on that but no totally

 

Um...no need to read the entire thread, just the first post

My signature says 2000 WS6 and I did say LT4 Vette
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those LT4 vettes are pretty bad, it should be a good race.

 

Maybe its the tune.

 

I dont care what the rating is. I own one. I drive it everyday.Everyone knows 305 is a BS claim. It was a stock full weight car that trapped 108. would a fully loaded 99 ta with 305 hp trap 108?..No. Noway in He-l-l.

It sounds to me like you are trying to be an A$$. No offense intended.
Besides, I beg to differ on the statement that crank HP is meaningless.

An LT4 vette probably wouldnt average a higher dyno then an m6 LS1 car.

 

That was exactly his point, the rated numbers for both are bogus, both put down 300ish RWHP, well over their rated crank HP numbers...

Your blanket statement of "I disagree.LT4's make 330." was wrong and worthless for comparisons, just as he was pointing out the 305hp rating of the LS1 was worthless for comparisons...

 

Thanks for clearing that up.

 

Did you race him yet?

 

Negative...trying to work out some problems with my 12 bolt right now. Just got it installed but I'm getting an unusual hollow clunking sound around turns. Almost sounds like the driveshaft hitting something but will be putting it on the lift to look at it today

 

I don't think you've seen many LT4's on a dyno then.

Then again, I haven't seen a bone stock LS1 fbody handing me my behind yet, but haven't had the car too long.

If luck goes well, I will be at GM Hi-Tech's supercar shootout with the LT4 Hawk, and for those who think 12's aren't possible with the car or that it's not under-rated, well, you may be surprised.

 

Okay, but for argument's sake, now that I'm in this thread, you say whether or not an LT4 would average a higher dyno or not compared to an M6 LS1 car. Maybe close, if the tune on the LT4 is stock from factory, as they were given an LT1 tune, not an LT4-specific tune.

Also, would you say that 108 trap in a stock LS1 is average? I'd say hell-no if you've been to fbody events watching LS1's run. In fact, I'd say it's more like 104-105, and usually right around 13.5's to 13.1's, depending on driver.

I will say this, if the LT4 Vette is stock, and the LS1 is modded and running up to snuff for its mods, it would be very hard to imagine the LT4 car winning that race. However, if the LT4 has bolt-ons, I think the 4.10's ain't gonna make too much a difference. It will be a driver's race.

Is the LS1 also gonna be on sticky tires?

 

my 00 z28 went 13.5 @ 105.1 stock on nittos 245 DRs.....

my friend went 13.2 @ 106 with lid and catback(not sure what kinda)

both m6

cory