I was wonderin if it would be beneficial and worth the money to invest in a TPI kit. My camaro presently has a throttle body and i wondered how much power i would gain from a switch

 

My friend is currently replacing his TBI engine with a TPI engine. And he his hoping to gain 100 horses but he's is also modding the block and adding a new cam and stuff... so i think you proboly will get gain 10-15 horses....

Hope this helps you....

 

If you've got a daily driver and are happy with your car, then no its not worth it. If you want more power out of your car, then its most definitely worth it. My dad switched to TPI on his 92 RS and gained 17 HP and 70 TQ at the rear wheels, on the stock 200,000 mile engine!

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH (2.10 60')
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

NIRVANA rocks!

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Bone stock blue TPI 85' Z28 42k original miles.

My Ride ---> https://www.thirdgen.org/rides/index...ew&rideid=8141
*previous car: lightly moded 89' Formula 350

 

id say switch to tpi
as someone who has both tpi and a tbi 91 camaros, i prefer the tpi, more power, and there is more you can do with it.
plus you get tons more low end
check tpis for their complete swap kit
(i think the base kit is $2500 though)

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91Z28 LB9 700R4 (for now)
car is pretty rough cond.
but trying to restore it.
also '00 civic ex w/CAI
short shifter and other
factory optional goodies

 

not worth the cash for the gain which is debatable

 

What the heck does Nirvana have to do with this topic?? :/

Anyway.... for the 70ft/lbs extra torque... I would spend the money and switch over... just hope you have good wiring experience and patience.

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1988 Pontiac Trans Am GTA L98 5.7L, Black on Black with 114,000kms.

Best ET 14.559 @ 95.25MPH
Custom 3" Stainless Exhaust Y-Pipe back (High flow Cat and Flowmaster Mufler)

 

FREEBIRD!!!!!!!!!!!!!!!WHOO HOO!!!!!!!!!!!!



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1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
www.gcfba.com (Greater Cincinnati F-Body Association)
http://www.cincyspeed.com/

 

hahaha, yeah but it's hella easier to run high 14s in a stock TPI car than it is in a modded TBI car, eh? Just messing with you man, shoot me an email, maybe i can come on down to your post this weekend if you have any time.

 

On a more serious note, i think kev's dads results speak for themself. Keep in mind that if you want to make any even vaguely useable power in a TBI car you are going to have to swap the cam and heads, as both are as bad as you can possibly get. Even if you swap to TPI this will be the case.
In terms of ability, there are a lot more fast TPI cars than TBI cars. If you want to be one of the few that struggles to get a TBI car to go, thats an admirable goal. If you'd rather have other people's success stories to guide you to your goal, TPI is your option.

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Ed Maher - Moderator @ The TPI & Carb Boards
92 Z28 Convertible - Quasar blue / Tan top
305 TPI A4 2.73 - 14.7 @ 93.6
Stock except ported plenum and dual cats
-=ICON Motorsports=-

- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die

 

I KNOW this is not EXACTLY the same, but when I went from a 4bbl to TPI, the difference was REALLY noticable. To do it I bought a wrecked car & swapped everything over. paid $800 for the car but I have about a total of a grand into my swap. You can do the buy it off e-bay thing, but unfortunately you more than likely would not get everything, so you will have to find extra parts.

Well worth the time to convert over ESPECIALLY if you want to know more about your car than most people.

John

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G O D BLESS AMERICA

http://www.3rdgenformula.com
87 Formula 5.1 TPI Auto Modified (Yellow/Black)

87 Formula TPI (5 Speed) Yellow/Gray STOCK

14.8sec 1967 Buick Riviera
1990 Buick Riviera (driver)
83 Camaro
83 T/A

 

also something to think about. i am assuming kevin's dad was runnin the stock heads and cam too. if he was, he gained 70lbs.ft. of torque by just adding an intake. if you put on a set of better heads, and stabbed in a cam with your tpi swap, you could easily have a 250-270 horse motor. that would get you mid 14 sec quarter mile times.

 

Yes, the dyno result was with the stock peanut cam and stock heads. He just recently put in another cam, its 198/210, with .450/.460 lift, and went from 175 HP to 187 HP. But the car was running lean, and no amount of prom tuning would fix it. We dunno whats up, but we gave up after four dyno pulls.

 

depends which engine you have an what you want to do with it. Your question is too broad without more info.

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-Tas
'89 Formula WS-6 made in Van Nuys, CA, U.S.A.

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options

 

well the post has nothing to do w/ nirvana, but his name is "K*urt*COBAIN" so i asumed he was a fan.

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Bone stock blue TPI 85' Z28 42k original miles.

My Ride ---> https://www.thirdgen.org/rides/index...ew&rideid=8141
*previous car: lightly moded 89' Formula 350