5.0GTA

ok, my friend says he found a website that says his '86 T/A 305 TPI/auto is rated at 215hp and that the 190HP version was the 305 H.O. I told him that the website might me mixing up facts with the '85 year, since they WERE rated at 215 in '85, but were choked down to 190 in '86 due to less aggressive cam profile and crappy exhaust. Who's right?

------------------
1988 Pontiac GTA 5.0 TPI
-K&N Filter
-Hypertech Air Foil
-Hypertech Perf. Chip
-2.5in Flowmaster Muffler
-Catco Hi-flow Cat

15.32@88mph
2.077 60-ft.
Kills
94 Probe GT, 95 Mustang GT, 96 Impala SS, 85 Thunderbird 5.0, 95 Accord V6, 98 Integra VTEC, 70 Chevelle Malibu, CRX w/ Turbo and Intercooler (have it on tape to prove it)

The ODB

I can tell you for sure that my 1986Irocz 305TPI was just 190hp,
but unfortunately I think I remember a few 215hp T/A's running around too. That's just my memory so I'm not really sure on that.

??

IROCKZ4me

The standard transmission TPI cars got the same cam as the 85 cars and remained at 215 HP. The auto trans TPI cars got a milder cam with less duration an where indeed 190 HP. GM advertsed the higher number (215 HP) in their sales literature at the time so that is why a lot of people think they were all 215 HP.

------------------

Tracy /AKA IROCKZ4me
'86 IROC-Z Camaro
"Cogito ergo zoom"

• 355 cid
• AFR heads
• Arizona Speed & Marine hydraulic roller cam w/ AFR hydra-rev kit
• modified SLP runners
• TRW forged pistons/ceramic coated
• fully balanced
• Edelbrock headers/ceramic coated
• SLP cat-back
• Paxton supercharger
• Nitrous Express nitrous oxide

My IROC-Z
EFI Performance Club on Yahoo
Club IROC-Z

Guest

There werent any standard trans TPI cars in 1986.

black5.7GTA

215?210?205?190?185?
Theres no 200 in there,anybody see that somewhere? I didnt know the horsepower rating of the 86 T/A was such a hot and debated topic(see also the Nun thread below)All I can say is this I had an 86 IROC-Z LB9 and it ran a 15.6 stock.Who has a stock 86 LB9 T/A on this board,anybody?I bet they are no faster then my IROC was.I really dont think Chevy(the LB9 is a CHEVY engine not a Pontiac) would have let its top of the line Camaro only have 190hp while the T/A got 215hp.I believe all the LB9 86 T/A's should be factory rated at 190hp,and 185 if you count the ducting.Everything else is incorrect.

------------------
1990 Trans Am GTA,Black/Black Leather,350,auto 3.23,Dual Cats,SLP Package,SLP Torque Converter/Shift Kit,Fastchip,GSC's,
G-tech 0-60 5.1 1/4mile 13.6@104
Previous Thirdgen
1986 Camaro IROC-Z

[This message has been edited by black5.7GTA (edited March 11, 2001).]

IROCKZ4me

That's right! My bad!!!
GM didn't want to warrantee the T5 behind that much torque until after they upgraded it in (I think) '87.
They all had the smaller cam in '86.
In '87 when they went to the hydraulic roller they had two different cams.
All the 86 TPI 5.0s were 190 HP.

------------------

Tracy /AKA IROCKZ4me
'86 IROC-Z Camaro
"Cogito ergo zoom"

• 355 cid
• AFR heads
• Arizona Speed & Marine hydraulic roller cam w/ AFR hydra-rev kit
• modified SLP runners
• TRW forged pistons/ceramic coated
• fully balanced
• Edelbrock headers/ceramic coated
• SLP cat-back
• Paxton supercharger
• Nitrous Express nitrous oxide

My IROC-Z
EFI Performance Club on Yahoo
Club IROC-Z

[This message has been edited by IROCKZ4me (edited March 11, 2001).]

The ODB

I swear I still can't remember for sure.
I know that my 86 Irocz ran 16.3 @80 completely stock down to the tires it came with. Not very impressive. I had the 700R-4 and 2.73 rear gears.

82RECAROTA

Kevin91Z

iTrader: (1)

1988. GM put the 5.0 TPI with the T5 in 1987, but it wasnt until 1988 that the World Class T5 made its debut.

------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

NUN

i got a 86 ta and it is rated at 210 hp but the tourque is rated lower at 270.i think the difference is in exhaust system ta got a ho 3' inch and also got a electric fan and more goodies when ordered with ws 6 package

Vader

ODB,

Yup - same thang:



'86 TA, 305 TPI, WS6, TH700R4 (duh!), 2.77 Borg axle, 16" 245 "Gators", stone cold stock, 16.29 @ 85.something MPH @ 730' alt.

It does a pequeño bit better with the mods, though.

That doesn't sound like much more than 190 HP from the Chevy engine in MY car, either.

------------------
Later,
Vader
------------------
"I'm'a do Things My Way - It's My way or the Highway."
Adobe Acrobat Reader

NUN

are those stock rims because my 86 had snow flake rims thoes rims look like an 87 gta

3.1 firebird

Vader, that car looks sweet! I;ve been thinking about getting rid of my 92 to get an 87-90 GTA becase I like the looks alot better. 190 hp should be quicker than a low 16, my 3.1 (stock 140hp) ran a 16.18 at 83 with headers,cam,pulleys,shiftkit,catback,intake. A few weeks later I added 3,73's and got a 16.09, but my mph went from 83 to 85.6. I estimate I have 175 hp or so. I would think a 190hp fbod with more torque than I have would do at least a 15.7 UNLESS you spun on the launch. I think myet should be better than a 16.09, but the 3.73's are hard not to spin.

black5.7GTA

What do you have?I like the looks of the 92 alittle better,you dont have a 5.7 Red or Black with black or tan Leather GTA do you?



------------------
1990 Trans Am GTA,Black/Black Leather,350,auto 3.23,Dual Cats,SLP Package,SLP Torque Converter/Shift Kit,Fastchip,GSC's,
G-tech 0-60 5.1 1/4mile 13.6@104
Previous Thirdgen
1986 Camaro IROC-Z

Kevin Irving

NUN:

Give it up already. Your 1986 305 TPI is rated at One Hundred and Ninety Horsepower. (Now that I spelled it out for you). I scanned the text from the Firebird Redbook to prove it in your other thread, but as of a few hours ago the thread was not working, so I will quote the text:

"Two 5.0 liter V-8 engines were typically available: the standard Trans Am engine, rated at 160hp (150 on the base and Esprit), and the 5.0 liter TPI engine, rated at 190hp - 15 less than in 1985"

"The L69 HO engine was discontinued because during it's two years of production it suffered from fuel boiling problems. Production records indicate that twenty six 1986 Trans Ams were built with this engine"

Other people have told you it is in no way 210, and you still insist on it. For Chrissakes man, you have 190 hp, be happy with it if you have that.

Also, the WS6 RPO is a SUSPENSION PACKAGE, not an electric fan or 3" exhaust package, it was 36mm (vs 34mm) rear sway bar and 24mm (vs 23mm) front sway bar.
------------------
Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, MSD 6AL, Aluminum Driveshaft, TB Coolant Bypass, Ported Plenum, Modified MAF, Syclone Fuel Pump, JET Airfoil

15.556 @ 86.65mph, Nov 10, 2000.... I know it sucks.. but it will get better!

http://www.geocities.com/transam85tpi/

[This message has been edited by Kevin Irving (edited March 13, 2001).]

3.1 firebird

no I have a 3.1. Still want it ?

Steve89GTA

My 89 305TPI has 242hp and 310ftbs of TQ with the mods below.

------------------
89 GTA G92
305 TPI WC 5spd w/3.45
Accel Cap & 8mm Taylor's
Custom 4" Cold Air Induction
Jet Airfoil
K&N Airfilter
160 deg stat/fan switch TB Bypass - Steel Rad
Cat back 3" Exhaust w/Terminator Muff.
HiGh FlOw Dynomax Cat
Spohn LCA's - KYB GR-2's
Moroso Crank Bolt and roller pilot bearing.
Autometer Vac+Oil Temp

Vader

Outwardly, the car is just as it was when delivered. I know the original owner (who lived down the street) and always joked with him about selling it to me when he was "tired of it". After he had is for six years and put a whopping 21,000 miles on it, he did just that. The only things I've done to the exterior are lowered side skirts and front air dam. I also removed the bra nose cover he installed on it. The rest of the changes and updates are on the engine, trans, and suspension, so the appearance is basically bone stock. The car was built in July of 1986, however, and does have some hints of 1987 ideas in its construction.

------------------
Later,
Vader
------------------
"I'm'a do Things My Way - It's My way or the Highway."
Adobe Acrobat Reader