TPI faster then new Z

I wanted to know if i could make the TPI 5.7 liter i am getting faster then a stock new Z i am getting headers and 3.73 gears with it. Any estimates at wut horse power i would be at with just those mods? The TPI is out of a corvette I think a 92 the year before they put in the LT1.

the 4th gens have 2 different motors 93-97 is lt1 and 98+ is an ls1.

To hang with the LT1 the exhaust and gears should get you pretty much even with an LT1, with good tires and a good launch you should be basically dead even. A shift kit in the tranny would probably also be good for another tenth off your 1/4 times.

To hang with an LS1 youre going to need some actual work to the engine, i would think the right intake and a cam should be able to net you a mid 13 but some porting to the stock heads wouldnt definitly put you over the top. However at this point youll probably blow up your stock tranny and rear end.

'92 was the 1st year of the LT1 in Corvettes (just being a stickler)

of course you could make it faster, power and racing stems from how thick your wallet is

on the street you'll have good chances against alot of cars with moderate modifications, mainly due to the insane torque output of the TPI...

but the high rpm breathing problems will kill you in anything more than a 1/8th mile against the LS1...

my 99 does 60-120 in 4th like my old iroc use to run from 20-80!!!


i say port the hell out of the intake, build a ram air, port the heads, mild cam and some headers. then work on the suspension and traction.

the fun part will be trying

i already beat a LT1 6 speed 2 times with my 3rd gen with the vette motor and some minor mods...the kid was making excuses that he couldn't get traction, but his rear tires were 255's and he would dump his clutch at like 4 grand, but he had the car for about 5 months so he should've known how to race it....but i didn't care, i left both times with a win :D

2 yrs ago when i had my IROC 305 TPI that was completely stock i could just barely hang with an LT1 car and not even close with a LS1 car.

then i bought a 87 Z28 with a small cam 355/T5/3.73 and good suspension(cam was only .488 lift) i could walk just about any bolton LT1 and i would lead an LS1 car til i hit 3rd gear and then it would be neck and neck

i saw the best thing to do is get the car to hook great from a stop then get you a shot of gas and a good top end of your motor and you will be fine to walk most cars since you will be hooking like a mother

thats the other nice part, stock an l98 third gen will go a 14.5-14.7. With gears and full exhaust its not hard to knock a .3 off your times. Combine that with an lt1 running a 14.0-14.2 if the car has a 6 speed and the driver isnt perfect, has a bad launch whatever, chances are hes going to chime off a mid 14 to high 14 where as with the auto unless youre a tool you should get a pretty good launch every time. Just dont mash your foot to the floor.

Torque and traction will win the race almost every time on the street, even against a car with much more power. Want proof? How about a video of a TPI car (torque and traction) vs a LT1 car (more power)?

http://www.blackcow.org/vids/90Iroc_vs_LT1TA.avi

That's how you do it!

hey marc, do you have any pics of your ride? everything you ahve listed is pretty much everything I wanted to do, i would also like to see that corvette blue on a third gen...

Torque and traction will win the race almost every time on the street, even against a car with much more power. Want proof? How about a video of a TPI car (torque and traction) vs a LT1 car (more power)?

http://www.blackcow.org/vids/90Iroc_vs_LT1TA.avi

That's how you do it!

Wow, thats neat, not.

If you watch the video the 97 is just sitting there for a couple of seconds then launches spinning the tires for 25 yards. Not to mention the race was what 200 yards! Woppity do! That doesn't prove crap.

ME Leigh: It proves plenty. Not only does it show the advantage of torque and traction, but it also proves anything can happen on the street. You snooze you lose... The same principal of torque and traction applies to the new STi's and EVO's. Stock for stock, an LS1 has more power. However, with a high rpm launch the STi or EVO has more mechanical torque and much better traction. The LS1 will be playing catch up until speeds climb well over 60mph.

I've seen more than my share of street races where the more powerful car loses to the less powerful car because of traction issues. Several new Vette owners have fallen prey to TPI Vettes in light to light races.

A good running L98 car makes a formidable street racer through first and second gear with good traction.

And if all that still doesn't convince, maybe you'll like this example better: L98 car with just free mods vs TT Supra (http://www.thirdgen.org/newdesign/movies/shaunwilhelm/camarovssupra.wmv)


klumb15 - Do a search under my username with "pics" and/or "zr1 wheels" You should find what you're looking for, albeit with old and poor quality pictures.

**** anything can happen, if the driver can't drive worth a **** or is a complete dumbass moron!

wait keithy- let me get this all staright.

so now your ditching your S/C 3.4L idea?
And the on/off switch for the Supercharger?

and now your putting a 15 year old 350 TPI motor in your 4th gen? :confused:

You should sell your camaro and buy a honda

dont be dumb joed the 350 tpi in my camaro that has been bored and port and polished with headers and 373 geats and a higher stall will be able to waste any stock v6 and maybe new z28.

Keith if you are dropping a TPI 350 in there you had BETTER do LOTS of induction mods or you will be dissapointed with the 3.73's.

3.73's are at the limits of a TPI induction system. I wouldn't have 3.73's behind a mildly modifed TPI. 3.45's would be PLENTY with the shear torque of the setup.

dont be dumb joed the 350 tpi in my camaro that has been bored and port and polished with headers and 373 geats and a higher stall will be able to waste any stock v6 and maybe new z28.

if by 'New Z28' you mean an LS1 car than you are the dumb one. oh, and Good luck with Lt1's/ and 4.6L mustangs.

And how do you plan on wiring/ installing this motor? because by the sound of things you, and your cousin dont know sh*t about modifying a vechicle.

Hey, prove me wrong man- Ive heard enough of your pipedreams, time for some action- lets see your 350TPI 4th gen already.

I don't know how much work you have done to your motor but I don't think a TPI car can keep up with a LS1 car at all.

You may keep up, or even take one out of the hole but that won't last long once you get past 4,000rpm. The LS1 is just warming up, but TPI's already out of breath.

Now, if you wanted to so how even you could get them, then I'd suggest getting a set of heads to flow as well on a TPI car as stock LS1 heads do. Too bad the TPI induction is a big limiter unless you match a nice cam with it.

You know, drop a HSR or a LT1 intake on that TPI and it'll be ALOT closer to catching the LS1. Granted, the head flow still isn't there, and it would need a tune bad.

But a HSR is excellent for producing drag strip power, and the loss of low-end torque isn't that pronounced, some gears could fix that easily.

LS1's are slow. Bolt ons some parts to that TPI and you will eat everything on the street.

I don't know how much work you have done to your motor but I don't think a TPI car can keep up with a LS1 car at all.

You may keep up, or even take one out of the hole but that won't last long once you get past 4,000rpm. The LS1 is just warming up, but TPI's already out of breath.

Heads, cam, exhaust, torque converter and sticky tire 350 TPI with the STOCK TPI setup have gone well into the 12s. There's a local guy here who has his stock TPI feeding a Dart headed L98 with a .560 lift Lunati hyd. roller through long tubes and a 3500 stalled TH350 running consistent mid 12s on BFG Radial TAs. Same setup with a 150 shot and he was flirting with 10s. That's MORE than enough to b*tch slap and LS1, and then some!

LS1's are slow. Bolt ons some parts to that TPI and you will eat everything on the street.

Your absolutely correct thats the most intelligent thing i have ever heard.

:bs: :bs: :alert: :alert: :confused: :confused: :eek: :eek:

LS1's are slow. Bolt ons some parts to that TPI and you will eat everything on the street.

Christ.. I hope that was sarcasm... oh man.... :lol: :lol: :lol: :lol:

im going out on a limb and hoping that was a sarcastic comment as well...

Heads, cam, exhaust, torque converter and sticky tire 350 TPI with the STOCK TPI setup have gone well into the 12s. There's a local guy here who has his stock TPI feeding a Dart headed L98 with a .560 lift Lunati hyd. roller through long tubes and a 3500 stalled TH350 running consistent mid 12s on BFG Radial TAs. Same setup with a 150 shot and he was flirting with 10s. That's MORE than enough to b*tch slap and LS1, and then some!

I was speaking of a L98 that kept the cam. Do everything else and you'll still have some major problems with a LS1. The trap speed just ISN'T there.

Assuming that head flow is the same, as well as camshaft profiles, the LS1 will walk away from the TPI easy enough. Stock TPI induction doesn't flow enough to make any major horsepower.

I was speaking of a L98 that kept the cam. Do everything else and you'll still have some major problems with a LS1. The trap speed just ISN'T there.

Assuming that head flow is the same, as well as camshaft profiles, the LS1 will walk away from the TPI easy enough. Stock TPI induction doesn't flow enough to make any major horsepower.

That above mentioned mid 12 second car traps 115 N/A, and 126-127 on the bottle. Granted, that's not the stock cam, and juiced, but you still have to flow the air to make that kind of power. What does 127mph in a 3300lb car translate to in HP? The TPI setup may restrict it, but not limit it. Same car went 4mph faster with a SuperRam setup N/A.

Well, to start with, the LS1 as you know can make a lot more up top than an L98. doing just intake mods will net some top end, but a t a trade of some bottom end. To keep up with or exceed the LS1, something like a super ram or steath ram intake is needed, but to retain the bottom end and give good midrange, a healthy cam with some moderate duration and a good amount of lift Ex. LPE 219 or ZZ9. some good heads, AFR 195's, TF G2's, and the like along with full exhaust, beef up the A4 with a shift kit and a 2400-3000 stall converter, alum. DS, and then a suspension that can hook, the 3.73's will work with a setup, 4.10's and kiss the 10 bolt goodbye, unless its modded for the power, or a 12 bolt, and you can pull some high-mid 12's and it will all be streetable. Dont forget custom prom tuning, and fuels system upgrades.

Engine,
http://www.transamws6.com/pics/transam/tpi_complete.jpg

Video,
http://www.transamws6.com/video/ZepherWS6.mpg

Bet your neighbors love you Zeph. BTW, runnin a lil on the rich side?

Engine,
http://www.transamws6.com/pics/transam/tpi_complete.jpg

Video,
http://www.transamws6.com/video/ZepherWS6.mpg

Didn't that setup run like 14 flat just under 100?

All things being equal...You need to find the 100 extra HP that the LS1 has under it's hood. Then...You'll be equal or faster. Nitrous is a nice equalizer. An LS1 swap is a better way. An LS1 swap with nitrous is the best route. I should have done that a long time ago. :confused:

Didn't that setup run like 14 flat just under 100?

Yep, that is what it ran. Computer wasn't doing anything since the prom was bad. Not too bad for running in Limp home mode in a stock 305 with a cam getting less than 12mpg.

Bet your neighbors love you Zeph. BTW, runnin a lil on the rich side?

Neighbors don't seem to mind much. A day before that video was shot I was testing the car with open headers and got a thumbs up from one of the neighbors down the street. :D
Car sounded like a Nascar car, obnoxiously loud.

zepher, which trans am is yours, the black one at transamWS6.com or is yours the one in the video the 2 tone black and burgandy....i love them both, that blacck one has everything i ever wanted...that video almost makes me want to get a trans am, they look real sweet...sweet vid tho

zepher, which trans am is yours, the black one at transamWS6.com or is yours the one in the video the 2 tone black and burgandy....i love them both, that blacck one has everything i ever wanted...that video almost makes me want to get a trans am, they look real sweet...sweet vid tho

They are the same car. I sprayed it all black so it wouldn't look like an eyesore on the driveway.
It was TPI and now it has an LT1/T56, but I am not done putting it together.

This is what it looked like after we pulled out the 305,
http://www.transamws6.com/pics/transam/ta_side_spoiler.jpg

Put the LT1 in, changed wheels, and spraypainted her,
http://www.transamws6.com/pics/05-2003/pass_side.jpg

This is one of the coolest pictures of the car,
http://www.transamws6.com/pics/transam/low_angle.jpg

was that video with the LT1 and 6 speed? what is all done to the motor? and i want those rims so bad, where can i get them? i've been looking all over for 16" or 17" silver rims..they are almost impossible to find for my camaro...also what kind of exhaust do you have on there, sounds good :bow: :bow:

was that video with the LT1 and 6 speed? what is all done to the motor? and i want those rims so bad, where can i get them? i've been looking all over for 16" or 17" silver rims..they are almost impossible to find for my camaro...also what kind of exhaust do you have on there, sounds good :bow: :bow:

That setup was the 305 TPI with a cam and ignition upgrades.
Tranny was a T5.
Exhaust, Hedman Shorties, custom y-pipe, hi-flow 3" cat, 3" Pacesetter Stainless Steel Exhaust, WS6 tips.

They sell replica wheels like I had on Ebay for about $600, 17x9. The wheels I had came off of a 97 WS6 and I got the mint set for $225. Hell of a deal I think.

I just wanted to add my $.02 to the topic at hand. I'm gonna have to back up Zepher with his comment that "LS1's are slow, Bolt ons some parts to that TPI and you will eat everything on the street." Now granted, LS1's aren't by any means "slow" in my opinion, but they surely aren't untouchably fast. Stock for stock, they have a whole .7-.8 difference over the latest L98 equipped thirdgen. THere trap speed is a lot higher so the potential for more upper speed is there. But with a few wisely thought out bolt-on, an intake surely being one of the more important ones, I don't see why a relatively well modded L98 couldn't hang with, or even beat, a mostly stock LS1 car. There is a guy running 11.5 (I believe) with a hotcam, HSR, and AFR 195's on a stock bottom end. I think the L98 has the potential, the owner just has to think out how to get to it best, if he wants to be running around with LS1's that is.

They sell replica wheels like I had on Ebay for about $600, 17x9. The wheels I had came off of a 97 WS6 and I got the mint set for $225. Hell of a deal I think. so you had spacers then right? do spacers change the driveabilty at all? I'm getting a LS1 rearend so I won't need spacers for the rear, just the front, will this mess up my steerage at all? and where did you get them for 225, junkyard or what?

are those the same WS6 rims that are in the pic when its spray painted and has the LT1 in it? they look different...if they are different what kind are those?

well i looked at your signature link and found out they are O.Z. racing...but I still can't find them on the net anywhere..

I am bringing the engine to my house tomorrow at 3 pm and i also got a hurst ratchet shifter with it for free. Any other things to do while the engine is out.