Has anyone with a highly modded TPI car beat any LS1's up at the track. If so list mods thanks. Cant be too many lol

 

Header's, basic bolt-ons and a 150 shot of Nitrous and you'll be able to blow away a fairly stock LS1 with ease.

It really doesn't take much more than that

 

well my ls1 ran a 13.32 at 107.7 at the track so a little more mods on what u have now would beat my car. what mods u have on ur car

 

I dont feel like typing all the mods so theres a link for ya. My car doesnt trap anywhere near 108. Its the car on the right of the homepage. BTW its the red car on the right. mods listed


http://www.thirdgenusa.com/

 

get some headers and a cam u definatly beat me in the 1/4 mile

 

Already got Edelbrock headers.

 

oh. If u want to stay n/a i say a good heads/cam combo u would kill me n teh 1/4 mile. Otherwise good health 150shot will do the trick.

 

i smoked a 2003 ZO6 with my stock internal TPI. (Thats with stock plenum and runners and no porting)... i got pics and video on my cardomain link...
If you are already running a 13.5 on your car now, you should be almost evenly matched with a stock or slightly modded LS1... If your trap speed is 99mph, you must be running some pretty steep rear-end gears. I run 4.10's, and it really takes advantage of all the tourque an L98 puts out. (345 ft. lbs. stock)
the only problem is the LS1 will be flying by you at the end of the quarter mile... Trust me, go with a 150 wet shot of juice.... that will drop at least 1 second off your ET and give you 10+ mph...

 

well with my formula i have kept up somewhat with ls1 cars untill alittle before the 1/8th mile and then they start pullin. just like the lt1's do but less of a margin.

my ls1 feels so much better up top then my tpi its not even funny, plus having a 6 speed that i can shift when i went versus the slush box 700r4 that barely shifts on time at all.

 

Ya the tpi system doesnt like high rpms much. I am sure an ls1 would beat any tpi car on the highway. Alot of people say they have beaten ls1 cars in the 1/8 [modded tpi cars] but by the 1/4 the ls1 pulls ahead.

 

BTW i left you guys some comments on car domain.

 

I have not run any head to head darn it. However my times are better than most at the track on the same day and same conditions. I beat an 03 Corbra a few times back but lost to a Rousch Cobra last time out. He ran a 12.00 flat. Also lost to a nitrous Z06 Vette. . I believe he was in the high 10's. I would have to dig up the time slip. I usually win most of my races but lost big last time out. Going to the track tomorrow and see what happens.

 

I would think you would be running low 12's with those mods. You have 322 rwh right?

 

Its funny when the 4th gens think they got beat by a TPI'd 3rd gen when I race them, but when they look at the motor in the pits they feel alot better. When I fool around on the street with 6spd 4th gens (near stock) I barely pull and pass them, but at the track my take off is alot better and it usually means I win.

I cant wait till the track opens up again. Anyone else?

 

I've beat afew LS1 Ram Air TAs and SS Camaros that were stock or near stock. Once they start modding its game over for me. I have stock heads and cam. I have almost all the bolt ons i can think of. Its been over 2 years since I've ran my car at the track but my best pass then was 13.21@104.63......mods in sig.

 

Yeap same here. After the 1/8 mile, it looks like I let off

 

I think eventually I am going to get an 02 WS6. Until then I am just going to work with what i got. Cause when your 19 you cant get your hands on $24,000 very easy.

Im thinking a Stall converter, radials, then its off to the engine.

 

Ok so if I raced one in the 1/8 mile, or in the 1/4 it would be close right. My 1/8 mile is 8.5@80, my best 1/4 so far is only 13.5 at 99, but I think I am going to see a 13.3 soon. It feels like its got more in it. If I raced one from a 60 or 70 mph roll would I get beaten up? thanks

 

After today 330RWHP at the dyno. Going to the track tomorrow and see what happens.

 

Wouldn't you know it. My first line up today and it was against a Fourth Gen. Could not tell you if it was an LS1 or a LT1. Anyways I got the best of him. He ran a 13.1 and I ran a 12.8 that time out. Got him out of the hole and he could not catch up. TPI won the match.

 

I wouldn't really compare TPI's to LS1's.

Not to sound like a **** boy or something, but they have 20 years of technology on us, they have an optional 6 speed that wasn't offered with outs, and they are in a totally different era of speed.

But if you really are set on keeping up with them, Stall, Full Exhaust and slicks will get your some decent runs.

 

well 1989gtatrans am ls1's look like this
http://i45.photobucket.com/albums/f9...cn0975_275.jpg

 

TPIs have no chance of keeping up with their younger brothers on the top end. Their best chance is to try to out ET them with slicks a stall and gears.

My ta has been beaten in a dragrace by a TPI car, but I raped that same car on the freeway. TPIs have one place, and it's below 5000 rpms.

 

How much does a Stall convert actually do for tpi?

 

i'd say 3-4 tenths.

 

Anyone got a link for a good one?

 

what was your best 60ft time? with a trap of 104 i am betting it was a low 1.9 to mid 1.8?
LS1 cars are not that hard to beat in a TPI car. biggest thing is traction, tpi power comes on at a very low rpm and it is easy to spin the tires. a stock L98 commonly runs in the low 14's, knock a full second off with bolt ons to compete with an LS1 is perfectly reasonable.
mild stall 2800-3000+ shift kit, 3.73 or 4.10 gears, adjsutable control arms and relo brackets, aftermarket torque arm, small DR's(255/50-16 or 235/60-15's woudl be enough to get the job done), drop the front sway bar at the track, raise front air pressure to 55-60psi, full exhaust with !cat, CAI, and a custom chip. weight reduction is always nice too
that shoudl be plenty to knock off more than a full second and compete with a stock/mild LS1 car. if you wanna really drop kick them throw a real cam in place of teh weaksauce GM gave us all and get the computer tuned for it. then you will be able to go well into the 12's easily.

- later

 

I have to agree about getting out front off the line. Most 4th gens at the track have a better mph then mine at least until my new record. However my et's are better. If the track was longer they would run me down with my current set up. There are some that have the bells and whistle's and will kill me.

There is also a 4th gen club that shows up and from what I have seen they all run nitrous so I don't count them. Heck I could to the same. They tend to run against each other as they are in the same group.

 

njspder, You said an L98 commonly runs in the low 14's. The 87-89 L98s usually run mid-high 14's. The 90-92 SD cars were capeable of pulling off 14.3's. It also depends on the tune of the car. My 89 L98 ran 14.8@93 stock in really good tune with only 40K on it. If you have a stock L98 running under 14.3 you pretty much have a freak car. Also you do not want to over gear a TPI car. You want to keep it in its powerband. So over 3.42's may be over kill in the 1/4. 4.11's would suck for Tuned Port Injection, the car would run out of revs.

 

3.42s would be okay for a 1/4 car. 3.73s with a heavily modded tpi and i'd just stay away from 4.10s no matter what.

 

yup, i know EXACTLY what you mean... a "wimpy" little stock looking quiet RS CONVERTIBLE seems like easy pray for mustangs and 4thgens.... and then it whomps on them... LOL.

what everyone in this thread seems to forget is, how many dead stock LS1s are there at the dragstrip?
most have lids. headers. and more of them goto make their car hook before they goto make more power... QA1 front "f-series" struts kickass....


id put it this way.... if your ET starts with a one, two... then i wouldnt go around talking **** just yet......

 

Ls1 cars tend to trap high for two reasons:
1) The make good power high in the RPM range; and more importantly
2) A lot of them are 6spd cars that aren't being launched to their full potential from big rpms on sticky tires because of fear of breaking the rear end.

Given your slip, you'd have a much better chance of edging one out in the 1/8 than the 1/4. From a roll, you'd have a hard time considering most LS1s trap a fair bit higher than 99mph.

Wow - you have a 3500 stall and 2.73s. What 60's are you cutting?

 

Stall converter, stall converter yay!

 

You know what I cannot understand about L98 cars. I have an article here that has the 87 L98 rated as a 14.5@95 in the 1/4. I have another one that says 15.2@91. Are some test tracks in better shape than others lol. can someone explain this cause I cant. An L98 that runs 15.2 stock is not going to be able to take any ls1 with just bolt-ons.

 

Magazines seem to be either right on, or way off. I was waiting to get my haircut a few years ago, and was reading an auto magazine. They ran a 14.1 in a 6-speed LS1 they were testing.

 

14.1 yuck. So its pretty much all about the driver I would think.

 

Ive run 3.42's, 3.73's and 4.10's..... The best of both worlds is the 3.73's (if your not driving on the interstate often). I gained 2 tenths going 3.42 to 3.73 and i gained 2 tenths going from 3.73 to 4.10's.. The 4.10's suck on the highway (3000 rpm in 4th @65mph), but they kick azz while town driving and stoplight sprints. As for a daily diver, it's fine if you aren't going over 60mph forl longer than 5 minutes. I have drove over 100 miles at a time with em, it just sucks gas and gets a little warm (225)

Im wondering about putting a 2500 stall in my car, will this just hurt me if im running only street tires and 4.10's????? Im pulling consistant 1.9's and occasional 1.8's on 255/VR/16's kumho ecsta 712's with 20 psi......... This is with the stock stall and 1000 rpm launch, while easing the throttle down.....

 

magazine times are notoriously bad. Most magazines (few exceptions) will test the car at what an average joe can run it at. They leave at idle, wear street tires and don't powershift. That's why magazines have exceptionally high times, usually more than a second higher than what the car can actually run. The trap speed in magazines is usually accurate, and that should be your real determining factor in how fast a car runs. Once you're more familiar with traps vs. ETs you can pick out how fast a car can ET with a certain trap.

 

3.73's or 4.11's on a tpi street car? Damn talk about long burn outs huh? lol

 

Well said!
Also track elevation and wether or not they are correcting times...
My 87 stock ran 14.3 @ 93 with the 2.73 gears..
Some weeks later it ran 13.7 with 3.73, headers and BFG's
I would also agree 3.73 are a good gear for TPIs but still on the steep side - as I went 3.73 when car was near stock and think 3.42s would have been better choice at that time.. If its a 305 3.73 all the way.
I would still recomend 3.73s especially if going to mod with runners,cam ect.
I still run the same 3.73s in my car, and it runs 10s now..

More on magazine times, friends had a stock 86 mustang with very low miles like under 17,000 I think who was psyco about running cars bone stock to full potential..
That car still with 225s on back and 2.73's stock down to airfilter ran 13.9 @ 93 - they were rated at 14.8-15.1.. but you still see alot of guys at the track with same cars running 15s because they can not drive.
Funny thing is he posted it on the Mustang board and got flammed and called a Liar. He also had a stock engined 93 with only chassis/weight/exhaust mods that went 12.89 @ 103..
he was talking of getting a 305 5 speed thirdgen to do the same thing.

As urban hunter said, trap speed does not lie, the rest is up to you.

 

I agree if you have a 5-speed 3.73's will work great. For 350 auto cars 3.23,3.27, or 3.42's are all great gears. Some people even get good times with 2.77's...must be that crazy tpi powerband.

 

i got an 87 Vette with a stock TPI/stock motor 2.59 gears stock stall and trans.

Current Mods:
K&N open air box, MAF descreened, TB Bypassed, 160* T-Stat, Accel Super Coil, 12* degree advance timing, Cut Back AC Delco Rapid Fire plugs gapped at .047 Indexed, TPiS Long Tube Headers, !Air, Air Elim Pulley, !EGR, Crank Pulley, Muffler Eliminators, Hayden Tranny cooler with a Stock 1600 rpm stall, 2.59 rear gear on 275/40/17" BF Goodrich Drag Radials.

with 4 less mods it ran 13.18 @ 105.84 mph. should be around 12.8's or better around 108+ still on stock TPI/stock motor stock stall/trans and 2.59 gears.

02 Firehawk M6 highway run. mods are lid/filter/cutout. first run he didn't hear the beeps and 2nd run he was on it as you see him jump me and i pull him. filming in one hand and letting the tranny shift itself at around 4600 rpm. i manual shift the car for best times between 4900 and 5100 rpm's.

http://www.corvettekillstories.com/p...20Firehawk.wmv

from a dig till about 1000' with 3 burnt plug wires due to just installed the headers and 4 less mods with a WS6 TA M6 car that dynoed i think 336 rwhp or so with lid/maf/filter only i think. had him by 1 car at the end easily. i spun all the way thru 1st and into 2nd on this run.

http://www.corvettekillstories.com/p...2002%20WS6.wmv

here is a short clip of my vette's exhaust. note the Z sitting in the background

http://www.corvettekillstories.com/p.../Sweet_Sin.wmv

here is a drag race compilation from 04 race season with the 4 less mods that i've installed since. auto C5's still had no chance even with out headers on the top end.

http://www.corvettekillstories.com/p...DragRacing.wmv

BTW i have one of the quickest 2.59 geared TPI C4's in the nation.

 

i never understood why they put 2.59s in the corvettes lol

that's an awesome accomplishment with your vette btw

 

Sorry to get off topic but does anyone know what stall I should get? thanks

 

thanks!

 

nothing more than 2800 and thats pushing it on a stock TPI

 

1.74 60ft is my best.

At one time I had the plan of getting a 12 bolt and 4.10's, but things happened and now I'm stuck with a 10 bolt on its last leg, but better gas mileage.

 

my friend jay cuts low 1.5s with 2.73s..... but he has a 4200 stall.. (lockup, so it works fine for a daily driver)
strangly, the rear gears have almost no effect on 60'... he gets the same 60 with 2.73s, 3.42s and 3.73s...

 

TPI works in strange ways when it comes to gears. I cant figure them out.

 

i guess i should clarify.... StngKlr's car, my car, and jays car all have LS1s in it... lol.

we're the guys on the other side of this debate..