1 the mustang its a 4.6 it has underdrive pullys cold air intake 3rd stage raceing clutch duel exhaust stock gears are 307 disk brakes all around 1/8 mile he ran a 9.195 at 77.29mph thats it on that one and 2 iroc its got 5.7 tune port injection bored 20 over air charger duel exhaust hooker headers 277 gears dist brakes all around msd 6alit ran a 9.322 at 73.64 ive got 373 to put in it but havent put em in yet lol thats about it

 

Hay, wellcome to thirdgen.org (TGO for short). So you have 3.73 gears that aren't installed yet?

 

not yet there in the front floor bored

 

You guys are already "theoreticaly" close. If you install those rear end gears, you wont just beat him, you'll humiliate him (in a friendly way). "theoreticaly".

I cant say I have that much racing experiance, so it's prob better to listen to some of these "Old Guys" (21-26 yr olds that patrol these fourms)

 

thats goin to be sweet cant wait but im goin ta have to get some tires what i have on there now is bald ive priced some street and strip tires and there high

 

as they sit right now it would be a close race.he will outlaunch you and by about 3rd gear will slowly start to pull away,judging by both your 1/8 track times.his car is much lighter so take not that if you change to 3.73 gears you will hold him off providing you can hook without spinning.but if he does gears and headers aswell with decent tire.it wont be pretty.should make for a fun race either way..line em up and let us know.

are you auto,if so..invest in a good shift kit and stall converter to keep greatly improve that powerband and launch.

 

Yup. very true. There are alot of factors in this race. You guys are already close, and considering how terrible the stock rear end gears are, the new 3:73s will make a big difference. Should make for an interesting race. Video tape it if you do it.

 

Ah yes. he has the 700R4. Do you have a shift kit?

 

corvette shift kit and a higher stall alone will make a drastic difference plus changing the gears.i hope your not still one leg peg lol.do you manually shift the trans or just leave it in drive?

theres lots of room to improve without even spending any money if you know how to get the best out of the car the way it sits right now that will knock that time down..might not hit a higher trap speed but who cares about mph lol

 

I noticed a big difference in my car when I got the shift kit.

 

The parts are only about $250

 

parts are cheap..yes.but labor might not be if the trans is being done at a shop.re/re the trans add the kit.at that sametime its best to have a trans rebuilt and a better stall.wakes the car right up.

 

Got mine rebuilt and had the shift kit put in. Got that done for $1700 W/ life time warrenty. Dont let them charge you for any extra labor involving the shift kit, cause there is none. Just tell them you'll pay for the shift kit and no extra labor. They'll take the deal. There is other haggling to be done, but this is just involving the shift kit.

 

ya im auto and i can get a shift kit for about 40 dollars or so but ive got em off the line till the 330 ft i leave it in third gear and let it shift on its own its about 4500 when it shifts

 

Camaro.

 

Stock vs stock its a drivers race.... those stangs can run low 14's or run high 14's into the 15's... in the 1/8th he out mph'ed the **** out of you... That tells me he is going to walk you in the 1/4... Those 3.73's will help a lot but more or less will even the playing field... BUT they can also hurt you as well b/c the L98 is not a fan of high rpms so the 3.73's will help launch the car but you might not get much faster... You might but you might not, it's a toss up if the TPI setup is stock.

 

lol that y im goin ta try the gears hes kill in me on the mph i think ill have him when i get the gears in it then he will have to work on his lol

 

ive got planed on getting a shift kit but what would be a good stall for it

 

I wouldn't stall ANY MORE than 2400 unless you plan TPI mods to make her flow better at higher rpms.. The TPI is best as low rpms... even 2400 is pushing it as the TPI stops making power at 4500 rpms...

 

I went from 2.73 to 3.73 in my Camaro and dropped .360 in the 1/8th and gained 2.24 mph. In the 1/4 I dropped .448 and gained 3.02 mph.

It will be close. Issue is you will have a time hooking with stock rubber. If you could put some drag radials on that would help your chances. Honestly, like other said dont go over 2400 rpm stall. The TPI doesnt need that much.

 

2400 stall is great for stock tpi l98.but if you plan on doing mods..cam,intake,tb,runners,plenum,heads etc.. i would go 2800 or 3000 stall.I had a 2800 on my stock tpi before my mods were done and it really wasnt bad at all..but i wasnt racing during that period since i was gathering my parts to build the motor.if the trans comes out before u mod the motor..do the stall then and always plan ahead to save $$$.

 

i plan on putting a 260 cam in it and it should raise my power band but gears first and if i beat em im goin ta leave it alone till he does something to his he is planing to put 410 gears im worried lol

 

Nice. Those are some good mods and plans. As far as performance, After i get my car in proper working and legal condition, I'm gonna finish redoing the exhaust, headers back to the cat (i just bought a 2 1/2" cat back exhaust kit, so that's takin care of).

 

what happend to it or whatcha doin to it on my exhaust ive got duel with dynomax mufflers they dont sound to bad

 

Even if you get a higher stall you dont have to launch at that speed. Flash that puppy at a lower RPM and figure out where the sweet spot is.

 

A cam isn't going to help a whole lot of its running the factory TPI setup. The cam will want more air at a higher RPM which the factory TPI won't be able to supply.. If anything it will run worse at higher rpms...

 

needs more air huh what kinda runners and plenum would be good for it what would be good to do first first gears second runners and plenum then cam or whatcha think or what other mods than i have put up there ta do first to my car

 

I just got a Dynomax 2 1/2 cat back exhaust w/ super turbo muffler (dual split exit).

As for why it is not legal or in working order, it needs new tires. Thats about it.

I dont know much aboat the 350 TPI, so forgive me for anything I say that doesn't make sence. I know a big problem with 3rdgen 5.0 TBIs was air flow restriction. Do you have an aftermarket air cleaner? And what exactly have you done with the exhaust system?

 

Without headers a cat back will do him nothing........well, it will make it sound different. lol

 

It needed to be replaced anyway 9the exhaust was severed at the weld conecting it to the muffler body. This has a better muffler, so at least that isn't restrictive anymore. I def am looking to replace/upgrade the whole exhaust system after i get everything else in order.

 

ive got k n air cleaners and the exhaust the headers are hooker headers from there are 2 1/2 pipe to the dynomax mufflers and ive got em turned down before the rear end thats itlol

 

Mufflers? You have true dual?

 

ya true duels

 

Two pipes running down the right side to the back or classic symetric duals?

 

just straight pipe from the collector to the dynomax mufflers are in the middle and straight pips to the front of the rear end and turned down

 

Got any pics?

 

id like to have some pics on here but not very good at it putting em on here but ill try to get some on here

 

went to the track last night at test and tune ran em again and beat em barly like i say he ran a 9.195 and i ran a 9.103 i changed the gears out to a 342 i thought id be lower but im not o well more mods to do thinking about ac delete and underdrive pully kit and see what that does

 

Have you gut the air box? That helps quite a bit andits free

 

i havent guted the air box im going to leave it like it is its got k n air cleaners in it it should be getting plenty of air to it

 

It's still restrictive since I also have kn filters and that itself does almost no difference but when u gut it u demand more when u get a way for it to get air directly.

 

Do yourself a favor and get rid of the K&N filter. Also, like said gut your air box.

Also I have a quick story for you. A friend of mine has a 5-speed convertible IROC. He ran a best of 14.6 with the stock gear and then it blew. He put in 3.73s and ran slower. Remember, these cars are lower rpm torque engines and dont need quite as much gear. If you had drag radials I would say go with some 3.73s though.

You should run a mid 14 no issue if you are at 9.1-9.2 in the 1/8th.

 

A cam is most definately going to help, even with the stock TPI. These cars come with peanut cams from the factory. I put a cam in my 305 TPI back in the day...stock it dynoed in at 159 RWHP. Cammed with roller rockers I put down 235 RWHP. I'm almost positive it made power up to around 4900 RPM as well with the stock TPI on it.

 

agreed. it will make a difference.

 

ya thats my next goal its to do im lookin to put a 260 cam in see what that does 1.980@60ft 5.824@330ft 8.505@594ft 9.103@1/8 thats where shes at now

 

now he has a svt programmer kinda worried ive got him so far im down to a 9.0 untill he programs his then he prob will get me

 

As others have said, TPI's don't need high gear ratios. My TA came stock with 3.0 Gears and its running good times and cutting pretty good 60's. I would go with a máximum of 3.23 gears if i were to ever change. My IROC I used to have (Friend has it now) had a 3.23 gear and had good low end grunt without sacrificing the top end.

 

im running a 9.0 in the 1/8 what would it be in the 1/4

 

most PI 4.6 2v's run mid-low 14's in good conditions. sometimes a glory run of 13.9 but very rare.

a bolt on l98 and a PI 4.6 should be a close race.

 

I think my old shelby GT ran an 8.8 in the 1/8th which was a 13.5 1/4. I'd say your high 13's.