Ok TBI guys what are your horsepower numbers? Can you beat a tpi car? Who has more horsepower than a stock tpi car, and how did you get it?

 

It doesnt take a whole lot to beat a TPI car, i can beat one in mine, a 305 that is. But as far as horsepower im not sure. So what do have have? LO3? If so and your asking how to get more horsepower out of it i would start with the exhaust. Throw some hedders on, along with 3 inch cat back and muffler. i know it doesnt sound like much but you wouldnt believe the differnce it makes and i gaurantee you'd be able to beat TPI's

 

Simple things like an open element and a full exhaust will put you nearor past the output of most 305 TPI cars (depending on the year since outputs varried). Only a few members here have had theirs dynoed but many have time slips that are far better than TPI cars with minimal mods.

 

and it also depends on where you want to beat them... if on the 1/4 mile, then yes, you will have to go with the exhaust/intake combo... but if its just some TPI on the freeway giving you crap, you can go over to TBIchips.com and get a stage 1 performance chip from him... or if you know someone who can burn PROMs you can ask them to remove your MPH limiter... not really reccomended with a stock TBI setup though... i remember when i had my tbichips installed w/ my stock LO3 passing the 110 mark on the speedo required almost 5000rpm in last gear... (700R4 transmission)

 

i had 162 rwhp and 262 rwtq look in my sig and i go like 120 mph in 3rd gear then let go the gas a lil so it gos into 4th gear and a lil more gas and with some time u could go 135 mph.mow why the hell wont the 700r4 shift gear from 3rd to 4th at w.o.t?is there anything you could buy or do so that it will shift to 4th?

 

I believe B&M makes some sort of kit that allows you to be in 4th gear at WOT.

-chuck

 

the b&m kit u have is the one that like 50 bucks at auto part stores right?does that make any diffrence?find out about that kit of shifting to fourt at wot

 

i am building a 305 tbi actually it is built, but i am waiting on a couple of other elements to install the motor. i was just trying to show a friend that a tbi car can hang with a 305 tpi car. yes i understand that 305s a kinda limited by "how deep are your pockets" for power! not tryig to start that war!

 

TPI systems are not performance induction set-ups. Nother is TBI but a TBI system will have a tremendous amount advantage at high rpm's than any stock tpi system. Aftermarket is a different story. There are plenty of cammed 305 TBI's pulling to 6k making power the whole way. I have yet to see any TPI car do that.

 

It IS possible to swap a tbi setup with a tpi setup correct?

 

Although pointless, it is possible.

 

Before i put the cam in, i was running faster than most of the 305 TPI cars i have seen run. the only ones running faster were 90-92 G92 5speed cars, with exaust mods. With the cam, in I run with bolt on L98's and stock LT1's. And i'm only going faster from here. Still have the stock heads in the car, those are coming out, and at the same time, i'm going to put in a larger cam. should be capable of mid 13's like that.

 

Getting to the "TPI level" is easy. Getting to the LT1 level isn't too bad either, but getting to the LS1 level, now that's what I'm shooting for.

 

Yeah, once i get the new heads and bigger cam in. I think i'm going to spray it into the 12's

(goodbye T5 lol)

 

. . . .ya think

I'm shooting for high 12's w/ no spray. I'm not sure the 700R4 is going to be able to hold it though.

 

with gears good tranny heads cam on a tbi and spray u could run 12.8 1/4 time ive seen it before

 

this kit will allow you to hold 4th gear at 3/4 throttle instead of just 1/2 throttle.

Yes, my kit is the cheap one, it was $3X.XX from summit and made my 1-2 shift much much firmer. Now it chirps into second. I know lots of people chirp into third w/ stock trannies but usually not w/ the stock motor and 2.73 gears. It breakes em loose at 45mph.

Now I believe the Transgo kits will totally eliminate the unwanted kickdown into third gear, but they're more expenceve, like $110 IIRC. However they are much better kits than the one I have.

On a side note, B&M claims a half hour install time, everyone i've talked to has taken more around 12 hours to install, i would highly reccommend checking out transmission shops in your area and seeing how much they want to do the install for, its a b!tch. I think the 30 min estimate was for the TH350.

-chuck

 

ummmm .... dude, the rpm required to reach a specific mph has absolutely nothing to do with whether the engine is stock or not. It is strictly a function of gear ratio, tire size and transmission. you could swap in the engine out of your lawnmower or you could swap in the engine out of dean skuza's funny car, but if you didn't change the tires, gear or transmission, it's still take 5000 rpm to make 110 mph.

 

Soon I will hopefully beat that with stock heads and cam

 

You better hurry up. I am waiting for track times from you Chuck! and Dewey

 

My car has been on jack stands for the past 2 months, when i finally put it down it better meet my goals. It has gone through a total transformation that I wouldn't even attempt unless I was almost sure it would do it. I plan on taking it to the dyno before I buy my torque converter too, so I should have some #'s before the season is up hopefully.

 

B&M makes a special valve that will allow you to shift from 3rd to 4th at full-throttle, but it's not cheap. I paid $125.64 shipped back in '00. I do believe there is a less expensive valve available, possibly through Chevy. I'm sure there are people on the transmissions' boards who can help you with that.

B&M part#70249

http://store.summitracing.com/defaul...0249&x=14&y=13

 

mine could be a while, i had a bit of a castastrophy driving the camaro this week, ripped the accessory bracketry in half, and broke bolts off in the block and heads. And i am broke as a joke, so i don't know when i will get it fixed, and get the heads on, to go to the track.

 

Darn you Dewey! How the heck did you manage to break the bracket in half! I have snapped a few bolts off into the head myself (didn't use the top front intake brace, ha) and an easy out will take them out in no time. Make sure you replace them with a grade 5 or 8 bolt. No more torx!

 

it happened driving down the road. :: shrugs ::

had to get towed home.

Actualy, i may not be down that long, I think i found a complete v-belt assembly for cheap (read: free). if that works out, I may be back up and running again.

 

that is some serious power! you better wear a flak jacket and helmet.

 

and a super troopers style bullet proof cup

:lala:

Brandon

 

Damn, how the hell did you manage to rip the bracket in half?

 

i dunno, all i know, is i went to change lanes, and had no PS. i though 'hmmm, that odd' glanced and the temp, it was climbing, so i pulled off the freeway, and figured a threw a belt (i keep a spare in the car). Imagine my suprise when i opened the hood. I guess that road side assestance on my insurance was a good idea after all (free tow).

 

that really sucks, but you can get good prices on used serpentine brackets.

 

I know people have asked you this before 25th, but how much are you spraying, and whats in your bottem end?

-chuck

 

125, but may bump as high as 150, which I am not certain on yet. Bottom end is stock. Before anyone chimes in, I am very aware of the risks.

 

Well with the 454 finally on and not ****ty stock injectors, Im finally to the point where I'll be tuning and not adding anymore parts (aside from suspenion, of course suspension stuff is so cool) so maybe a week or two from now. Ima try real hard to get this **** tuned this weekend.

 

dude, your goona blow that s**t up with you NAWS.

after the heads go on, i do plan to spray mine. hopefully the gears wil at least stay in the case of the tranny.

 

He should be fine until his "danger to manifold" light comes on

 

Nah, the real problems dont start until his floorboard falls out.

 

You guys crack me up. I do plan on a nice heads and cam project in a couple years after I finish school and I can port them all by myself. My goal then will be 11's on a 305 tbi.

 

He won't have a problem, if he double clutches like he should, and doesn't granny shift.

 

rofl! lol... but then, i think that problem only happens in green eclipses... 3rdgens shouldnt do that