^ answer please

i saw it listed at 180 but that that was wrong and how much trq too??????

 

Model :Trans Am
Trans: M5,A4
Engine code/type :LO3 V8
CR 9.3:1
Displ 5.0 (305).
HP 170@4400
Torque 255@2400


right off of https://www.thirdgen.org/newdesign/tech/techdb.shtml

 

89 Trans am 305 LO3 engine and 700r4 trans. it says it under my name

 

If its a 305 TBI LO3 it should have 170hp and 255trq, but it shouldn't be a 305 TBI if its a Trans Am it should have the TPI 305 LB9 unless it was a base Firebird with a sport appearance package and someone put the wing, tail lights, and hood of a Trans Am to make it look like a Trans Am

 

i put the vin in the vin decoder on this site i got this

Here are the results for your query on: 1G2FW21E7KL228422
Made in: United States
Manufacturer: General Motors
Make: Pontiac
Carline Code: F-Body
Carline Series: Trans Am, Formula
Body Type: 2 door coupe (hatchback)
Restraint System: Manual belts
Engine Code: 305 ci V8 L03 (1988-1992)
7 is the CHECK DIGIT
Model Year: 1989
Assembly Plant: Van Nuys
Production Sequence: 228422

pretty funny how on msn used autos a 89 trans am is 180 hp and a 92 trans am with the same engine is 205

i wish it was tuned port

 

Sure its not a Formula dressed up as a Trans Am?

 

The LO3 was the base engine on the 88-up Trans Ams, like the LG4 was the base engine up to 87.

 

It looks like its a Formula made to look like a Trans Am and they never came with a LO3 the base engine was a 305 TPI, the formula had a base LO3 in 88-92

 

From 1988- 1989, the base engine in the TA was the TBI. After that the 305 TPI was standard.

 

lol how can u guys ask if it a dressed up formula and its not a LO3 engine when the vin number it right there?

 

Yeah Iroc's had the same engine in those years. The TBI was a base engine. I learned that a few years ago after arguing with someone about it.

 

Well I learn something new every day, its just that I have never seen a Trans Am or a Z28 with a LO3 I always thought that they had a LB9 as a base model in those years. I knew that they had the LG4 as a base motor but I thought when they dropped the LG4 as the base motor the 305 TPI became standard at the same time

 

It still shocks me how many people don't know this (that IROCs and Trans Ams had TBI) It should come as no surprise really---they both had LG4s too.


Oh one more thing---170hp is the offical figure but I have heard that they are 174hp!

 

^170 hp my ***, its underated it has to be, no car makes 255 ft lbs and 170 hp, thats bull****, it was underated for insurance purposes.

 

why would you say that? And why does no car make that??
Ford had a port injected 302 that made 150hp and 265lbs-ft.

Myabe your used to imports and small 4 clyinder engines. Thoise have very close hp and torque peaks. But large unsofisticated V8s are totally different.

I will assume your not to educated on such things. Try keep in mind the following facts on the L03.

-They have about the worst following heads Chevy ever made

- very restrictive exhaust

-an extremley mild camshaft (under .0400 lift)

- The engine is from Chevy/GMC pickup trucks

So, given 305 CID---torque comes pretty naturally--but the hardware doesn't do much for the hp.

It s amazing L03s are as fast as they are. My old IROC (TBI, auto 2.73) ran 16.2

 

More good news for ya, Borsty. 89-up TBI's also come with a speed limiter installed in there programming. 115mph is the top-off, even though your speedo probably says 120.
But the good news is, you can look in the tech articles as to how to bypass that.

 

Its the truth the LO3 only made 170/255, as 871LEIroc said they have horrible heads and no cam its the lowest option V8 for those years

 

Most of the V8's even TPIs were like that in the 3rdGens... They L98 only made 245hp but like 350ish ft/lbs of torque...

 

Ya I don't see why its so hard to belive that TAs and IROCs came with LO3s. The LO3 is just about the same thing as the LG4. The LO3 was even a little better on gas. TAs and IROCs/Z28s had LG4s as their base engine through 87.

 

I know that the IROCs and Trans Am's had the LG4 I just thought that when they dropped the LG4 completely in 87 that at the same time they made the LB9 the base engine for the Trans Am's and IROCs and left the LO3 as the base for the Formula, I thought this mainly because I have never seen a IROC or a Trans Am with the LO3 or ever heard them talked about in the same sentence before this post

 

The "Big 3" haven't underrated engines for insurance purposes since the time of the 426 Hemi and the LS-6 454s... after those were retired, the power ratings actually were low enough that there was no reason to under rate anything anymore.

The only engines that "may" have been under rated were the L69 (it killed the slightly more powerful Corvette) and the TTA's Turbo V6, but that was for their own reasons. I like to think its because GM didn't want anything to seem more powerful than the Corvette, but others will say otherwise.