I'm not here to say I kicked its ***. LS1 is a damn good motor, hehe. But I'm impressed with my 355, Vette L98 Alum headed, XE268, Stock TPI motor. I was able to take him off the line through 1st, he passed me as I shifted to 2nd and I pulled somewhat with him to 60. Id say he got me by 2-3 car lengths by the end of the quarter. I was surprised my car performed like it did. I'll imagine I could keep up with a stock LT1. It was a fun race!!!!!

 

Sounds like you are right on par with LT1 M6 territory. Get rid of that stock TPI and chances are next time you will be on top.

 

hey i believe you, anything can happen. Maybe some ppl are gonna think your BS. But anyways sounded like a good run for the good ol TPI OLDSCHOOL style

 

Good race man. LS1's are damn fast, especially in 3rd gear. They can't mess with the L98's off the line though

~Matt

 

no reason to call

sounds legit. LS1's can run high 12's to mid 13's depends on car and driver. (not the magazine LOL) Your car with those mods should be high 13's or mid 13's. Mine runs 14 flat with only headers/exhaust and 2800stall. Shocks and springs help too but i also have 2.77 gears. Yours should be atleast be able to outrun mine. Also, from a dig, he probly didnt launch good and L98 torque gives him a run for his money. Our auto trannys have sick first gear. LOL

Sounds legit, congrats!! Just upgrade that TPI restriction and you should be able to hang with them, stock that is.

 

but he has a t5 stick......

 

Awww, man my bad. I missed that one. LOL He Hinted at shifting and I missed that cuz i shift my auto manually. LOL

I just assumed that you had a 700r4 cuz you have a 355 TPI. LOL

You know what they say about assuming things. "Never assume, you make an *** out of U and ME." LOL more like me.

Hows that t-5 holding up to that power?

 

have herd that if u put a good clutch with a t5 it can hold a l98 power without brakeing

 

Why not???

 

Dano 00TA's abbreviated sig:

2000 NHRA Edition T/A
Pewter Metallic
A4 3.23

1989 IROC-Z 5.7 Dual Cat
Auto w/3.27 gears

Why don't you tell us? Stock for stock... Or compare the two with a converter in the L98. There's a LARGE low RPM torque difference.

 

I meant the stock ones

~Matt

 

I meant stock for stock, of course it's not even close now. I g-teched both cars when my TA had about 400 miles on it and was bone stock and it ran 0-60 in 5 seconds flat, the bast my IROC can do is 6 flat. And my TA cut 1.9 short times completly stock with GSC's

The torque difference isn't as much as people make it out to be.....



I gotta admit that stock for stock my IROC "felt" quicker off the line but sotp feel doesn't tell the story. Just like alot of people think that when they uncap their exhaust, the car "feels" slower when it's actually faster.

 

nice comparison. I want to time my car 0-60 with my 2800 stall to see what i can rip off. Maybe this weekend if i can get home. I think low 5.0's shouldnt be a problem. Ls1's do produce better torque curve than L98's and have higher peak I believe cuz usually Ls1's are slightly underated. LOL Its just that the car is heavier than thirdgens.

 

Really? Guess I am wrong then... by a lot. Thanks for the info. I don't own a 350 L98, I just heard that they still could take LS1s through 1st.

~Matt

 

the LS1 will always be Better then the L98, The L98 will always be better then the CF1. LS1 will always be better then the Lt1. The LS2 will always be better then the LS1. Get the point.... Technology gets better

 

MTI's C6 only put down 335 rwhp

 

That sounds about right. However, the vette transaxle does not have the same parasitic losses that a standard A4 or T56 tranny does. An LS2 behind an f-body T56 would probably closer to 350rwhp.

 

Overall torque production no, but the difference shows in where it occurs. The L98 peaks at 2800RPM, and the LS1 peaks at what? 4200? Not only that but peak numbers are higher for the L98, by about 15 ft/lbs. Low end torque is MUCH greater on the TPI, much greater. Compare dynos, engine dynos, and not chassis dynos. Chassis dynos usually aren't capable of reading at low engine RPM. 0-60 times were around 5.8-6.2 seconds for the L98 cars, but 0-30 was usually achieved at 2.1 seconds. One of the quickest out-of-the-hole cars for the day. What is the LS1 capable of?

 

so...

 

Romping it from zero to thirty is like, if you blink, you miss it. Unless you spun out. Then it takes awhile...

 

I had my car dynoed and peak torque was at 4500rpm and you're right, the dyno didn't measure under 3500rpm.

I don't know what the 0-30 time would be with a LS1 but like I previously mentioned 0-60 with my car off the showroom floor was 5 flat and I cut 1.9 short times so I'm sure the 0-30 times would be very close to a L98

 

So the IRS makes it dyno less rwhp?

 

L98's peak at 3200rpms according to this site tech data.

Also, seen stats of LS1 02 z28 running to 30mph in 2.32 seconds. LT1 vettes are 2.04 so all these cars are dead even off the line to 30. its to 60mph where the power is realized.

Z28 Ls1 about 5.5 seconds as tested
the Lt1 vette was about 5.2 seconds,
and L98s are probly 6 flat

This weekend, i am gonna test out my L98 with 2800 stall to see what it will do 0-60 and 0-30. hopefully if i can make it home

 

Don't look at peak values. Look at the whole curve. It you put 2 power curves of an L98, LT1 and LS1 side by side you would laugh at the L98. Sure it makes peak torque but only in a short RPM range. The LT1 and LS1 may start out a bit behind but when their peak torque is reached they maintain it for another 3000 rpm or so. Then when they shift, they are right in the meat of the curve everytime, building and maintaing toqrue through each gear up to redline. After 1rst gear the L98 loses power as it reaches redline and goes through the gears. Take away the restricitve nature of stock TPI induction and it becomes a whole new ball game. Stock for stock an LT1 and LS1 will make just as much torque on the dyno as any L98.

 

dont LT1's torque peak at like 2400 rpm or something real low? That sounds like a good combo. Real broad flat curve too i hear.

Yeah, LS1's have that torque rpm advantage because they also have 2000 more rpms of usuable power range. LOL, L98's are a beast of a motor. And since we are a bit lighter than 4th gens, we should accelerate a tad better. But nothing can match TPI for torque production! Makes more torque than any other intake design i can think of. LOL