hey guys i wondered over into the tpi board and there is a guy over there sayin he ran a 14.8 completly stock with his 305 TPI is this possib;e or is it bull. they said the 305 tpi's runa high 14's low 15's stock. is this true? if it is then if i got vortexc heads TPI setup and a cam i would be liek low 13's. i find all this hard to belive. let me know wut u think or know

 

100% bull... no 305 tpi runs 14's stock... maybe a 350 would be close...but not a 305.

 

Dude.....Im doubtin it! I guess anythings possible. I have a stock 305 TBI and I aint never timed it.....but its probably doin really high 16's or low 17's.

Oh....TPI..... my bad!!

 

if anyone is bored:
and unless this becomes TBI tech it will be moved very soon.

 

i did actually see a LB9 go a 15.0xx once at the track with just an exhaust system. but it was a very low option car(light) with a very good driver banging gears hard as hell.
it is possible to do it.

i am moving this post to the tpi board.

later
tim

 

I don't doubt it the least bit. I watched a 305 Auto run 15.1s stock. So what's to say a 305 manual couldn't easily do it. There's been 305 manuals that pull a 92-94 trap speed stock, possibly more. That trap speed could get a 14.8 as long as traction is there.

89formula#1, just remember E.T. is just traction. Yes, it's what you go around telling people, but in true terms a trap speed is what you want. I could run a 14.50 at 110 and I'd be the happiest man alive. Because that would mean I could run in the 12s if traction permitted. Ask him what his trap speed is and come back and tell us. Also, get a 60 foot while your at it.

 

My stock 305 TPI with well over 200,000 miles, TH350 transmission, and 2.77 gears in the back ran 15.6.

I wouldn't be suprised to see a 305 TPI hit 14.8-14.9 on a very good day but I doubt he could do it repeatedly. If he can, he's lying and it's not 100% stock. Ask him about gears and tires used. If it's an automatic with greater than 3.23 gears then it's most likely not stock. If the tires aren't full tread street tires then it's not stock.

 

My 1988 305 TPI 5/sp with stock 3.45 gears ran 14.88 and 14.89 at 92/93 MPH. Yes a LB-9 can run high 14's all stock.

 

Of course the TPIs with better gears will run better. Gearing makes a big difference.

 

I've seen a bone stock LB9 1LE car go 14.6; and I'll stand by my word.

 

Look, i'm sorry you guys are in denial about the performance gap between TPI and TBI cars. It does not take a freak 305 to run 14s. My vert has run the 14.7 @ 93.6 w/ just dual cats and a ported plenum. And we're talking a full option heavy convertible w/ 2.73s.

TBI cars run nowhere near the same numbers because they have horrible heads and cam. Also TBI isn't a very effective injection system. Why do you think GM went to swirl port heads after years of carbed small blocks doing just fine? Done properly, sure it can run good. But until you address the seriouis deficiencies, you're going nowhere. I don't want to hear bench racing garbage. If you haven't done it, thats it, shut the he<x>ll up.

If this thread shows any signs of the typical TBI board demeanor of 'oh yeah, well i think you can run 13s this way', i'm just gonna close it cuz unlike [i]that[/] board, we have better things to deal with, like actually going fast (compared to other performace cars, not ricers and pick-ups)

 

It's very possible for a 90-92 TPI 5 speed car to run that time since they have 230hp and 300ft/lbs of torque, almost the power of the L98.

I got my LG4 to run a 14.9 with 2 mods, carb and intake, and I started with 165hp and 265ft/lbs of torque.

 

A friend of mine had an 89 Formula 305 TPI with 5 speed and a couple summers ago it ran a 14.92 @ 92mph. The only thing it had done to it was it DID NOT have a catback. It was cut off at the cat because he had been rear ended, had the car repaired, and just had not got an exhaust back on it.

Other than that, it wasnt modded at all. No ported plenum, chip, air filter. nothing.

Just banging the gears.

 

My 92 Z28 with alumin drive shaft, ported intake plenum and runners ran a best of 14.21@96mph. She normally runs 14.5. This was at MIR which is a great track and at sea level. A couple of my mustang buddies witnessed the run and freaked!
Of course that was being pretty hard on the centerforce clutch and stock 5spd.

 

I have a magazine test (we know most of those guys cant drive, right?) of a 91 TPI 5-speed that ran a 14.96@92
Somehow, I'd say 14.8 is entirely possible. Hell, with only a different muffler, underdrive pulley, and POS chip my peanut cam car ran a 15.4, and my car has every option and about 200lbs of stereo junk in it.

 

305's do run in the 14's stock.. Motor trend has showed it 14.9 is a stock rating.. I know because my 92 ran it..

but after some simple mods like a Homemade ram air kit and some under drive pulleys it ran 14.7

So believe any guy with a 305 5speed G92 model will tell ya 14's is possible


:rockon:

 

my 91 1LE ran 14.2 when i got it...it was a 305 5-speed with BFG drag radials and SLP 2on the left exhaust

 

GMHTP came out with a magazine article a while back concerning the fuel injection era comparison b/w f-bodys and mustangs.
Quite a few were in the 14s (350s, 305s). The fastest thirdgen listed in the entire artcle was an 89or 90 Formula 305 5 speed base model $12000+ bucks that ran either 1 14.6 or 14.8 in the low 90s. I said FASTEST. Faster than any of the 350s. I'm sure it had the 3.45 gear.

I'll get that magazine artcicle this weekend so I can verify my statements.

 

This really isnt a good thing to say especially from a moderator. You cant stereotype.

 

 

Tas is just angry because he cannot delete any of the posts in this thread Or maybe because he realizes that a 305 TPI and/or carb is a superior platform to his beloved 305 TBI!

More then a few 305s have made it into the 14s on relatively few mods from stock...

 

ok so if i change my heads with the L31 vortecs and switch to a carb like a 650 with an performer intake and a nice cam and some gears i should easaly be low 14's high 13's cause all i wunt is mid 13's so i figure for the price of a 350 build up i can just switch to carb and work my 305. wut do u think

 

Gee, i'm sorry if my attitude offended some of you, not. You're the ones who MOVED this thread to my board. If you want to have a pissing and moaning party about a perceived lack of performace from 305s, do it over there. This board is for cars (and users) who work on their cars and actually do something with the performance of their cars (and don't get beat by late model econo sedans).

And i can stereotype the TBI board if i like. Anytime someone tries to reason w/ 'em (you know, like asking to see results, etc) the posts either get deleted or flooded with a whole lot of the same non-substatiated garbage. I clearly stated in my first post that if done right, sure TBI can do OK. Thing is, i don't see too many TBI cars done halfway right. Just a lot of bench racing and pie in the sky dreaming.

I will leave this closed since their really is nothing more to debate. plenty of 305 cars have run 14s stock. There's evidence here and all over.

 

I thought moderators were supposed to be a model for everyone else on how to act.

 

Where does this ideal of the moderator as a model citizen, or servant come from? I'm just a person, just like anyone else. And i am sick to death of the trash talking TBI crowd. They brought this grabage on my board, so you're damn right i'm going to expose them.
I understand that the TBI crowd for the most part represents the younger and less knowledgeable crowd. And thats fine (and thats not who this is about), we all start somewhere (even if TBI is the worst platform to start from). The problem is, guys like tas and nj slowr sit around pulling each other's di<x>cks about, well this combo will run this, and this will run that, but they can't point to a single person thats done it. Just dreamin. Even when they are on the right track, they still find a way to exagerate it.
Whenever someone tries to bring this up on their board, the thread gets edited or deleted. They don't take very kindly to having to offer proof and examples or even reasonable logic.

More than anything else, as a moderator i feel i should set a tone. Well my tone is to put up or shut up, and you don't have to be PC. I don't think what i'm doing is wrong. This isn't close to a flame, consider this a non-sugar coated way of pointing out certain folks shortcomings, only cuz they won't recognize them themselves.