hey guys, im new to TPI and dont know much about it yet other than basic knowledge. i know TPI is good for low end torque, but not for upper rpms (above 5000). my question is, on a stock l98 car with a 2.77p rear, should it be able to break the tires loose from a stop? im looking into buying an 89 to replace my 86. unfortunately, the car is for sale near my hometown, but im away at college. i had my dad go look at it for me and take it for a test drive. he said when he went WOT from a stop the tires didnt break loose. i know the gearing isnt too great for off the line, but still...with all that torque i thought the tires would go....

 

sorry, didnt finish the post....im worried that there might be hesitation off the line for some reason. unfortunately, my dad doesnt know enough about cars to tell me a whole lot.....any ideas?

 

i just got a 86 z28 with a 89 tpi 350 in it... different streets will let them break loose.. um.. drive it around alittle let it get warmed up... im not an expert this is just from my knowings. if this matters, they do crazy donuts. and huge break stands if you like thoes. but yes most of the time my back tires break loose. and i have pretty fat tires back there too.. hope this helps

 

Let's see. I've had 5 f-bodies and every one of them broke the tires loose except 1 and it needed work.

 

my 92 when it was mostly stock (except runners and cat back) would absolutely ANNIALATE the tires.

 

if you do a break stand ( if you do it right) you could sit there until your tired or you run out of gas. or you run out of tire

 

Any F-Body should be able to break the tires loose...

An L98 should leave twin rubber as long as you want it to, even with 2.73's.

 

Had a couple of cars w/ the same drivetrain combo. All stock and all in good tune. There is a big difference depending on how good your tires are. Both of my 5.7L/2.77 cars would break em loose a little on nice, dry pavement from a standstill but for the most part the would grip. They would squeel up to about 15-20 mph and chirp 'em in second at WOT. Brake torque burnouts were never a challenge though.

 

thanks guys. just to clarify things, i didnt ask this because i wanna do burnouts. i asked because i was worried that the car didnt spin off the line. my 86 will spin through all of 1st gear so i was worried something was wrong with the car. i mean, with 330 lb ft of torque you think it would have no trouble which makes me think something is wrong with the car like its not making all its power...

 

I just bought a 89 iroc z28 with the 350 TPI. At first i had a problem spinning the tires and then i found out i had a hairline crack in my distributer. Put new one in along with 8.5 MSD wires and a MSD coil and depending on the pavement the tires might spin. But the tires i had are top of the line z rated do they might grip a little better.

 

my 87 iroc with a 305 tpi will spin pretty good now it dont spin worth sh*t on certain roads. it chirps second pretty easy. does the car have a open rear or a posi in it if it has the posi that might be why i dont spin.

 

my 305 a4 will even break the tires loose... a lot... more than i ask for in some situations... but i had the same hesitation problem at one point... then i checked the timing... and it was set way too low... somethng like 10* retarted or something... so i bumped it back up to stock, which is 6* and it ate tires all day!!!

 

Mine doens't break them loose either unlees I actually put the car in low then it does. if I leave it in drive it won't hardly at all.

 

Like i said its the rear change the rear and you will go through tires like you owned stock in the company. 2.77 and 2.73 are just to low for 1/4 miles. there ok for crusing the highway. Get a better rear like a 3.45 or 3.73 and you will get to know you tire guy really well.

 

i am running 2.73 on my 305... you really need to check the timing... it will give you a ton more low end torque, which you need to break the tires loose... find a timing light somewhere and see what your timing is... stock should be 6*... if it is lower than that, put it back to 6* and see if you can tell a difference... also... if you engine will let you... bump up the base timing some more... i had mine at 10* but i was getting some knock so i put it back at 8*... its still getting a little knock... which means its running lean... but i hope to fix that with an AFPR... but check the timing man... it makes a huge diffence in how the car is running!!!

 

I have some pretty nice Z rated tires on my Camaro. If I were to stomp it from a stop, no matter the surface, I'll sit there for a good while.

Just about all the Camaros should break loose on street tires. Most 305s can do it easily, and it shouldn't be a problem with a 350.

 

TPI=torque=

TPI cars shouldn't have a problem at all spinning the tires from a stop. My slow '88 GTA (has 3.27 gears) can roast the tires by just punching the gas. Hell, i even got it to break the tires loose from a 20-25 mph roll with the car in first. Remember though just because the car can lay rubber doesn't mean its fast. I have a friend with a 96 z28 and he can't get the tires to spin at all without using the brakes.

 

i was gonna say check the MAP sensor but it not a SD car....check your timing...it sounds likes it to retarted lol

and about spinning the tirrs....ive done a few 2nd gear 5k clutch drops on my 91 lb9 5 speed and lemme tell you about how hard it smokes um...they will spin soo freakin hard untill i have about 45mph of ground speed goin...the the r's fall a little bit and it hooks and takes off....

the problem that u should be having is gettin it to hook up

 

Bottom line though is, u dont want your tires to spin at all if u race, so maybe its a good thing for u.

 

my timing is at 10* advance and I still don't spin em, I think something is wrong w/ my ignition. would a weak module cause problems like this? thanks

 

What would it matter? I dont get it? Your in 1st in both anyways?


I got a 9 bolt with 2.77's. On your average street, I can spin them pretty good. And I have new Z rated tires too.

 

The whole point to this post has gone to ****. The fact of the matter isn't whether or not he could or should be able to roast the tires or not, its if the car he is looking at is in good tune. Traction varies from car to car. The car should launch pretty good no matter what gear is in the rear, but if it bogs off the line then there's problems.

 

Mine won't spin at all without the brakes, but I am at 5000'.....at least I hope that is why.