which would win in a qaurter mile drag a stock TPI and a stock LT1

 

an lb9 tpi would def looz and an l98 tpi it would be close but i think in the end the lt1 would still win.... the lt1 is def a better/more advanced engine but it wouldnt take much to make an l98 tpi engine run with if not beat a stock lt1.

 

My last time at the track I got to talking with a guy who had a 96 WS6 LT1 w/ram air. His car was a 6 speed w/ 3.42 gear and cats removed exhaust (stock manifolds)

I raced him and repeatedly beat him in the quarted mile, his best time was a 14.2, I was running 13.7 - 13.8's. He was not pleased with his car that day. He coudln't believe that I was faster, but I could

 

Well from what i see. THe L98 would deff take a Lt1 down at first (low end TQ ) By over 70mph youll slowly see the Lt1 take over and thats it.. But these L98s are usually the SD ones agianst the 275hp early Lt1s 93-94

 

hey ator what modes have you done to your car or did you run it stock ?

 

SLP Runners, ported plenem (Speed density)
Headers, custom Y-Pipe, no cats
AFPR, #24 injectors
160 Thermostat, 170 fan switch (car runs cool)
3.73 gear, shift kit, Drag Radials (1.8 - 1.9 60ft's last time)
Completely removed all AC and smog components, replaced AC w/1LE pulley
Underdrive pulleys
Probably a few other small things I cant remember like Throttle body bypass

Still using stock chip and did not have the AFPR the last time at the track, but, looking to go this Sunday and hopefully run a 13.6 or better.

 

thanks for the info but thats not what im looking for

 

My car ran a 14.6 's - 14.7's stock, I believe the LT1's were a few tenths quicker. But on the street, the TPI can win becasue of the shorter distance between stop lights and the TPI's stock torque

 

yeah i agree above.. 350 TPI with a good driver deff could beat a Lt1 stop light to stop light (with all that low to mid range TQ) But in the 1/4 the Lt1 will win. Also TPI is very good street setup as well.. My 91 ran a 14.3 back in the day.. i dont kno if i helped you anymore

 

Thats exactly what happened when I raced my friends 95 Z28 when we both just had catbacks. I walked him hard though up till around 70. Thats why I believe a healthy TPI car is great for the street.

 

I have a 95Z28. It runs 14.0-14.2 stock. Thats what its rated at. GM did away with SD after 92. My 95 is MAF. My 95 is stock except for K&N CAI, 4.10 posi gears and a six speed with borg warner centerforce clutch and pro 5.0 shifter. It runs lower than 14.0 at the track. Oh and I forgot. I just put on shortie headers. Next week it gets 3" exhaust from headers back with no cats. You can check this web site for qtr mile times for vehicles up to 1999.
http://www.missouri.edu/~apcb20/times.html

 

My cousin's '94 M6 formula did a 13.5 with KN filter charger and a cutout. I've seen an L98 vette with upgraded ignition system and KN filter do a 13.9.

TPI is the **** down low, but up top the LT1 just makes more power, longer.

 

The ONLY place that TPI makes more TQ OR HP is a 600-800 rpm window from about 3000 to 3,800 or so...below that and above that is LT1....

LT1 is 275hp@5,200 and 335 lb ft. @2,400
TPI is 245HP@4,400 and 345 lb ft.@3,200...

Both Auto cars with 3.23 gears
LT1...13.8-14.0
L98...14.0-14.2 (G92)

thats a 92 and 93....

i ran my buddies 94 M6 with only a K&N to a 13.59@101

My G92 LB9 ran a best of 14.12@96, the power wasnt there but i can drive the **** out of a stick so i was able to run with LT1s and LS1 on the street due to my ability....i wouldnt run one from a roll though =)

A TPI car will pull an LT1 to 70 or so like said becasue in 1st and 2nd the rpms go through the "meat" of the midrange: the strong point of the TPI....when 3rd gear comes along and the longer gear ratio of the tranny holds the rpms longer in the higer rpm range the tpi gets walked becasue thats where the LT1 shines...

It woul dbe the exact same result with a stock LT1 verse a stock LS1...around 70 or so the LS1 would start walking away becasue of the superior top end.....

 

well lets say i was doin an engine swap which motor would be easier to drop into a 92 rs ive been told that almost everything hooks right up to an LT1 but thats prolly the same case with the TPI because they came in the z28s

 

I believe you, TPIVETTE89 (mem on TGO he has 1989 Corvette) ran in the mid-high 13s with just a few boltons i believe.

 

I dunno what kind of drivers you guys are racing, but my L98 was one of the "rare" faster motors, and against a 6 speed LT1, I NEVER was in front. Both cars had nothing more than K&N's and Flomasters.

I've raced several LT1's in different situations and NEVER been close to winning.

...and I've smoked countless L98's so it's not the me or the car.


In every test I've read back the LT1 heyday, they put up better numbers than the L98. The stock GM numbers say it's got more power, and the 6 speed cars are also geared better.

...EVERY single time stock vs. stock comparisons come up on this site, it's amazing how slower motors always seem to win.

 

I agree with you. But If u think about the L98 has really good torque low to mid range. Ive Seen them hang with Lt1s until around 60 or 70 and then they seem to die down. I think the 2002 Camaro SS only has 340lbs of TQ. Atleast i beat the Ls1 Fbody at one thing

 

I just read back through this post and no one has said that "stock vs stock" they have beat an LT1

this was the closest comment I too have beat countless L98's and now beat LT1's, but never have I beat them when I was stock

 

I am with Abubaca on this one. TPI was a torque motor but so was the LT1. Ask anyone who owned an LS1 and an LT1. They all miss the LT1 down low. Remember to compare apples to apples guys. No **** SOME L98's beat SOME LT1's on certian given days with or without mods, but on a level palying field the LT1 will outshine the TPI, it just doesn't look as nice in the engine bay. Do a search for guys that dyno factory LT1 and factory L98 cars. The LT1 cars will generally have a much flatter( and higher than TPI) curve for both torque and horsepower.

 

I agree, stock vs stock the LT1 should win quarter mile every time, but a good running TPI L98 CAN take an LT1 off the line, I don't remember how long it will take the LT1 to catch it, but it will. Like I said though, my car is no longer stock and will take an LT1 in the 1/4 no problem.

 

I have an 88 gta and a '97 m6 Z28. The LT1 car was noticably quicker in stock form. I think the L98 car pulls well out of the hole, but gets spanked pretty quickly as soon as traction is no longer a problem for the LT1 car. This is stone stock mind you, no mods at all.

Troy
So Cal

 

Well the Lt1 is suppose to be quicker, Just like the Ls1 is suppose to be quicker then the Lt1. Gentlemen, technology changes and approves. Look at the Ls1 and the L98. The Ls1 is 10 times quicker and gets better gas mileage. But the L98 and the Lt1 dont have anythin in common with Ls1 besides its a V8. There both diff setups. But the L98 and Lt1 has a much similiar setup tho. Like i said ive seen L98s take down Lt1s wit a few boltons. But ill admit ive never seen L98 take down an Ls1. Actually once, someone posted a video on here.

 

After the upcomming winter mine will be taking down LS1's left and right, but, I don't know if it will still be consisdered an L98

 

Hehehe Nick, the LT1 is not "supposed to be quicker" ...it is Stock to stock there is no dispute. If you say *minor* bolt-ons then make sure the LT1 is given the same treatment. The original poster asked stock to stock. The answer is....LT1. I have a modified TPI as well so I am not knocking anything but the truth of the matter is stock LT1 is quicker than stock L98.

 

True, But not down low.... (ESP THE SPEED DENSITY) Ive seen once a bonestock SD L98 91 Z28 vs 93 Z28 Lt1 bonestock Auto, And the L98 took it down. Around 50 or so the Lt1 snuck by it and passed it. THe L98s intake is meant for low end grunt. The Lt1s has a more mid to high end power. I deff can picture a speed density l98 take out a Lt1 by a car length at first. But after the Lt1 will deff will beat it. Also my 91 Z ran a 14.3 back in the early 90s. If i rem correctly a Lt1 (early ones) were only better by a tad bit (due to 30 extra HP and less TQ) The most 93 Lt1s ive seen run a 13.9-14.2 Bonestock that is.

 

There is a lot more racing in the 1/4 mile than the first 330'. Even by 330 the LT1 is right there. Stock VS Stock in the 1/4 mile the LT1 wins. No freaks or ecxeptions just facts. There are lots of guys with bone stock LT1's that get well into the 13's. I came across a guy on the net with a 97 Camaro that ran 13.6 stock. Sure the L98 has more peak torque but thats not the issue. That does not apply to this question. Its not who has the lowest time on their stock setup. The correct answer is LT1

 

I'm glad to see you guys are with me on this, and you're right, a lot of you didn't say you were stock, my mistake.

...I'm hoping to be takin' down LT1's with my current mods as soon as I get my prom taken care of...AND I lose that darn 2.73 gear!

....and in respect to the original question:

Assuming that you're asking this question because of a possible swap, there are LOTS of things to consider beyond which is faster. If you currently have a TPI motor, then of course you can use your exisitng wiring. L98's are traditional gen1 SBC so parts are EVERYWHERE, and pretty cheap. And of course they're painfully easy to work on. LT1/LT4 are still fairly common, but not quite AS common, and they're a little more expensive, and from what I hear, they can be a PITA if you're used to dealing with gen1 SBC's. Not difficult per se, but you just have to know what you're doing. Parts can be more expesive too.

 

My friends 1992 B4C ran a 14.2 stock. Where my friends LT1 ran a 14.3 stock.


Just thought i'd add fuel to the fire

 

right now i have a 3.1 i was going to go down to the local junkyard and check for a TPI but i was told that you get more bang for your buck from the LT1 and i want to get out as much as possible for as little as possible...personally i like the tpi cause theres alot of performance parts but the LT1 already come with alot of HP

 

I beleive it, but that's the exception, not the rule! (and I know you're just being difficult, LOL)

 

What tranny do you have? If it's a 5 speed, it may not hold much more than a stock LT1, or even a fresh L98.

I think the LT1 has a coolness factor in a thirdgen, but if budget is a concern, I'd go L98. Are you gonna leave it stock? Well, whether or not you know it yet, you're not gonna leave it stock. It's just a matter of how long it takes for you to figure that out!!!!!

I vote for L98, even though it's just a little slower!

 

Actually if youd read my post and every other publication on the earth youd know that the LT1 has MORE LOW end the the TPI could think about putting out...once again THE ONLY PLACE WERE TPI MAKES MORE HP OR TQ IS A 600-800 RPM WINDOW FORM 3,000-3,800....ABOVE OR BELOW THAT LT1 makes more power/torque

The LT1 has a 3 inch runner...great for LOW and HI end...Midrange suffers due to the Untuned runner length...The tpi has a 17-21 inch runner (depending on were u measure from) good for low end GREAT for MIDRANGE and sh!tty for top end....

Reread my post as youll see why the TPI is able to pull an LT1 to 60-70 or so

 

i have an auto with overdrive

 

holy **** i just wanted to know who would win a drag and which one you get the most out of for the money

 

Lol



If both are healthy the LT1 takes it. For the most out of it for the money, I'm not really sure. Although if you started makin really good power (400 +) the TPI would have to go to get max performance.

 

93 was still speed density on the f and y bodies.

Ahhh, silly under rated numbers so Chevrolet doesn't hurt Corvette owners' feelings You'll find they are making the same 375ftlbs (01+ ~ 97-00 was 370) the Vette LS1 is making at the crank. My 2000 made 319rwtq bone stock. That's appx 370 at the crank.

I love these debates. I need to stop by here more often!

 

oh dammit, I thought i had one performance # better THe Ls1s were really rated that high on torque? I knew the Corvettes were up there, But i never knew the Fbodys were.


If i rem correctly i was reading on a 2000 somthing Corvette and it only made 355lbs of TQ

 

I always thought the automatic cars were rated lower, but it might both auto and manual cars had the lower rating 97-00. The 01 and newer cars recieved the LS6 intake, so that's why there was a bump in power, and I know the auto cars 01+ were rated lower (360tq compared to 375).

But anyway, there isn't any difference between the f and y body LS1 other than the bigger things are the Corvette never had EGR and it uses an electronic throttle control. But most f body LS1s are putting over 300hp and 315tq to the wheels bone stock. Mine made the numbers (303/319) with 12K miles and factory paper air filter.

Nonetheless, I have a soft spot for TPI cars in my heart

 

ok, i got the part about the LT1 being faster than the TPI but how the **** did the LS1 get involved i dont care about the LS1 ...which one are you gonna get the most out of for the money

 

I gotta say TPI.

Right off the bat, you can get 'em cheaper. All the generic stuff like brackets and replacement hoses and bolts etc. can all be had cheaper because they can easily be found just about anywhere.

Once you start really diggin' into the engine and replacing major parts, the costs even out, but so do the performance #'s.

The only reason I can see for chosing the LT1 are:

--You're looking to make some serious power. The TPI runners will eventually hold you back once your HP numbers get up there.

--You like the coolness factor of an LT1 swap.

--You currently have a good deal on an LT1.

This thread certainly has a lot of good issues worth debating, and I don't think there's a clear cut answer for you. They're both fairly close. There are so many variables like how much of the swap are you gonna do yourself and what skills do you have. Are you familiar with Opti-spark. Are you going to modify it at all? What are your long term goals, and what's your budget?

 

So when you get to the point of replacing the intake, does it really count as a tuned port engine anymore?

I think it'd be more enjoyable to build an EFI small block in a 3rd gen because many people think there isn't such thing as a fast 3rd gen. I mean, yeah, you can make power with a LT1 (they are in the 9's and 10's with stroker motors), but a well running L98 is fun and will suprise many people.

 

It was mentioned that a L98 makes more toque than a LS1 - that's where the discussion started.

What's the problem though? A little education never hurt anyone.

 

I agree for the most part...stock vs stock its really anyones guess...race to 50 TPI race to 100 LT1 who cares....there both fairly quick....once modding starts though LT1 is the easy choice..dont get me wrong im all in favor of a fully upgraded TPI...Base big runners..that will run VERY well...but its the cost thats the problem...the factory intake is capable of well over 600 hp in N/A form (granted with porting) and thats an expense that you dont have to worry about...aside from that, you can get the same heads and cams for both motors...

The opti is a b$%^h no doubt but what are ya gonna do

 

I dont want a racer...I want a low cost ( i dont mind spending money but i dont want to spend it on stuff i dont have too) swap that is drivable but yet fast enough were i could outrun those damn ricers and what the hell is an opi-spark

 

Optispark is the ignition method used by the LT1/LT4. No traditional distributor/cap/rotor.



I figure if it's originally a TPI and you replace the manifold etc. even though technically it's not "tuned", it's still considered TPI. Kinda like a generic tissue is still a cleanex.



I dunno about that one. I'll need to see some evidence to back that one up.

As far as which one is better, you gotta step to the plate my friend, we can't buy it for ya!

 

If you want a cheap swap then go with tpi. However, you may not like the 4500rpm limit on the intake. If your talking street or light to light racing then tpi should be fine.

The LT1 will not be as cheap. The opti-spark is the lt1's distributor system and it's above the water pump on the front of the engine. You shouldnt get it wet.

If the tpi is as good as some here have said then why do most guys here who have the chance to swap motors always seem to want the LT1? Most of the scenarios described here seem to have a lot to do with who is driving. With equal driver expereince the LT1 always wins. We are talking 1/4 track times here. Not street times or light to light times. There is a difference. The LT1 is certainly a better motor. It is even the preffered motor over the pre-LT1 350's.

I have and do own an LT1 95Z28 and have had in my 85 the tpi system. There is no comparison. LT1 is simply more advanced and better off the line and throughout the rpm range. Also, it's getting to the point now with modern technology and consumer demand that car makers are producing motors with more torque and hp than ever before. Not sure if you should be worried about running with rycers anymore. You can pull up to a light and get spanked by a duramax diesel nowadays. There are several trucks on the market that will surprise you...

 

well my friends dad has a 93 or 94 corvette not sure but its 40th anniversary..i asked to see the motor and its a TPI...the engine is the same as a camaro TPI exept it has alumunum heads which add around 20 hp please let me know if im wrong...well that corrvette hauls ***...i wouldnt mind that motor in my car


abubaca- howd you come to be a moderator...ive always have been interested in being one

 

You just let admin know your interested in moderating and then they will take it from there.

 

93 would be 40th anniversary and if it's a 93, then it's a speed density LT1 - Period.

 

What is this LS1 killing setup consisting of?