I figured I'd post this funny story since for the past few months all I read is about TBI and V6 thirdgens trying to race, never anything about TPIs. Yesterday, on my way to work, I accidentally raced a Tiburon and a 4thgen, more than likely a v6 or a bad running LT1. My car is having serious issues when idling. It stumbles and wants to die when at a stop. The only way to stop this from happening is to give it a little gas (keeping the rpm's about 1k). I pull up to a light and there was a Tiburon on the left lane and on the other side of him was a black LTstyle 4th gen Camaro vert. I didn't think much of it, I normally don't egg people on. Like usual, my car started doing the usal idle shake, so I put it in neutral (auto trans) and started reeving to keep the rpms high...well, the Tiburon thought I was reving at him so he started reving too and then the Camaro started reving too, I guess he thought the Tiburon was reving at him....so I figured, what the heck. I looked in my rearview for a quick cop check. I had the car at around 1.5k rpms. The light turn green, I put in gear and mashed the gas pedal. Well me and the Camaro just leaped and it was as if the Tiburon was standing still. He was gone, so it was just me and the Camaro at wot. It had a deep sound, but not the deep V8 sound. It could possibly be a v6 with exhaust or possibly a v8 with stock exhaust. I've heard LT1's and they have a distinct sound of their own... I'm not sure. he was a bit ahead of me, maybe a fender and then slowly, I reeled him in and passed him which I was surprised...he was still racing by the sound of the WOT. I got to about 75-80 and he was behind me a car length or two. We were aproching a light and my turn off so I slowed down and into the turning lane. As he kept going I just gave him a peace sign out the window... I thought that was pretty funny that I unintentionally egged 2 cars on. I'm actually delightfully surprised that my car did so well for an 87 LB9. Mods in the signature...

 

btw, no NOS was used...

 

Nice Kills. You probably raced a V6 Camaro. If I remember correctly they ran 15's... Sounds like a lot of fun though!

 

another thing I've noticed about my car recently is that its pulling alot harder on the top end, I know TPI flows badly on the upper rpms, but recently, its been doing better on the top than it ever has...

 

Lol, that's pretty cool. Never had a race with more than one car at once... lucky!

 

Way to go man, good kills!

 

Stock TPI setups have been in the low nines, at 150-mph. The setup itself isn't bad at all, it's mainly the throttle body, as well as an ancient processor (ECM), being the only real restriction....

 

I have news that same throttle body is used on the Ramjet 502 making over 500 HP. It couldn't be that bad.. The real restriction is the lower manifold and the runners.

 

im sorry but

stock?

are you taking n/a? forced induction its possible i guess... id love for you to prove me wrong, maybe you confused some numbers?

 

Well, I meant if there was in fact a restriction out of the entire setup, it would be the stock throttle body itself. Also depends on how much power your looking to make. The stock TB, hell, the stock MAF is capable of very good numbers, when the prehistoric processor doesn't get in the way of course....

Umm, what do I get if I prove you wrong? A new set of injectors, maybe....?

As for forced induction, you completely missed the point. If a turbo is able to push x amount of air into the combustion chambers to put down the numbers, then the runners are obviously not a restriction, at all. They only become a restriction when your running too much displacement. I would draw the limit at 355 cubic inches. As for proof, no need for the bullshite flag, just ask me next time, and if I can't provide the proof, then the flag goes up....

.... stock TPI setup w/out power adder;

http://challengevideos.com/event5/JD...n11.28.115.mpg

.... stock TPI setup w/two Grand National turbo's;

738 RWHP @ 25-psi, 9.34 @ 150-mph....

http://www.youtube.com/watch?v=mnIDXKGoEY0

 

Ive raced a tib se gt with the v6 when i had my z beat him by like 4 or 5 lengths and was still pulling when i let off. Everytime i raced him it was worse an worse lol. Ive driven the car its not slow but its not fast. everytime id let off hed do the r i c e r fly by tho it was funny. never raced a 4th gen tho wanted to

 

yeah thats great news an lb9 kicking butt mine couldnt even catch up to my friends z28 lt1 or most of the slightly tweaked hondas but mine is the 86 with the really lame cam makes about 190 hp i think can never find 1/4 times for stock 86 though so i would guess 17 sec im hoping the engine dies soon so i have an excuse to drop a 350 until then im the slowest camaro on the road haha j/k it does nice powerslides though

 

yeah, my car has come along way since when I first got it. I test drove a Camaro with a bone stock L98 not too long ago and remember thinking to myself, "man this car feels slower and sluggish than my TA"...then again, I have full bolt ons... It feels nice to know your "piece of crap" turdgen can take on newer cars...really boosts your car-esteem...

 

http://http://challengevideos.com/ev...n11.28.115.mpg

Need to post that in the thread "why do you love tpi."Guys over there bashing tpi.Now I know its not the best setup for race but it can be made to move.

I never can get these links to work when I post them.Dont know what I`m doing wrong

 

Yeah, I don't see why people like to bash TPI either... I see how its not the best race-oriented intake, but its not useless as people seem to make it...I think its perfect for forced induction and to be honest, its one of the most unique engine intakes out there... most other intakes are really bland/flat and not much to look at... I remember when I first got my T/A about 3 or 4 yrs ago, (I wasn't into cars back then), I saw the engine and thought...WTF is that? All it needs is some plutonium and a flux capacitor and it belongs in a DeLorean with dock Brown and Marty....

 

yea i have yet to hear about a 9 sec n/a tpi running or one even in the low tens.

 

The only way your going to hear about a nine second naturally aspirated TPI is if someone decides to take a TPI unit to the extreme, meaning high compression, and a heavy amount of weight reduction. There are nine second naturally aspirated "street" Honda's that run near me all of the time, and the reason why they can run that fast is because of the weight reduction as well as a few other factors. Nobody bothers with TPI anymore, it is twenty going on thirty year old technology, and the only way your going to see one run the number is if someone guts their third gen, and substantially raises the compression with the right cam, heads, etc. There is no doubt that it can be done, the question though is who wants to go that far just to run a number with TPI. If you make it worthwhile it will get done right away. Meaning, offer up five grand to the first person to get their naturally aspirated TPI to run nines and it will happen tomorrow, trust me...

 

Yea that had to have been a V6 4th gen. It hard to tell what engine it has unless you see the badging.

I have a buddy with the 3.4L V6 ( 93 Firebird )and it sounds like a ******* monster at idle. WAY meaner than my car. I had a pretty good running L98 before my current car and this LT1 would molest that TPI in a race.

Only mods are a shift kit and a hooker cat back.

 

so you feel that the lt1 and l98 are like night and day

 

Definitely. It might be a little different for Speed Density L98s and MAF LT1s but my Speed Density LT1 feels a HELL of lot faster than my MAF L98 did.

Supposedly, 93s were the fastest of the LT1 years ( aside from WS6s and SS models ) due to the SD instead of MAF like 94-97s used.

The powerband is just worlds better than the L98. Past 4000rpm, the L98 fell flat on its face. TQ peaked at 3200 and fell pretty rapidly from there.

The LT1 on the other hand hits is TQ peak @ 2400 RPM and holds it until it starts to really fall off at ~4600rpm but the HP doesn't peak until 5k right where it redlines.

My best friend ( Who has a 1998 LS1 Trans Am ) swears up and down that my car is faster. Weve never lined them up but theres no way a near stock LT1 could take down an LS1 even if it was bone stock like his. More than likely its because he has the 2.73 highway gears where I have 3.23s. I also have a Hooker Cat-Back as opposed to his stock exhaust so that probably plays a big psychological part as well.
( Heres an exhaust clip if you're curious :

You Tube

)

It also helps that an automatic LT1 usually has right around 230-240 whp. So its expected to be a decent bit faster than a stock L98 like mine was.

 

what about the torq of the lt1 can you feel it like you can in l98

 

Easily. It comes on a lot sooner and holds itself flat well past 4000rpm. Also a ~5.4sec 0-60 is a lot faster than ~6.6sec on a good day with the L98.

That reason alone is why a lot of 4th gen owners prefer the LT1 over the LS1.

P.S. LT1s have the capability of running high 13s bone stock. L98s cant barely run in the mid 14s.
Most LT1s are low 14s cars and most L98s are low 15s cars. Just as a reference.

 

in stock form yea but you can create a tpi to run with the best of them you have to just address the weakness of the tpi.

 

True but I'm strictly speaking stock vs stock.

 

I still don't know where you guys keep coming up with that BS. L98 cars run mid-high 14s in stock form.

 

Keyword being most.

I have no doubt that a 3.27 or 3.42 geard L98 can run a 14. But I'm pretty sure that most of them came with 2.73s if I'm not mistaken.

The only thing I know for certain is that GTAs came factory with 3.27s so I would assume G92 Camaros did as well. I also think the 1LE Camaros and B4Cs had 3.42s, I'm not too familiar on the Camaro side of 3rdgens.

 

i agree