Are these bad numbers?

**TA98** · 05-13-2009, 05:08 AM

I put my Trans Am on a Dyno-Jet Dyno this past weekend at my works car show and it made 280 HP and 313 Lbs. of Tq. Its a bone stock 1998 model with 172,000 miles. I was just wondering what you guys thought.

**Zinergy** · 05-13-2009, 05:37 AM

Originally Posted by T/A98

I put my Trans Am on a Dyno-Jet Dyno this past weekend at my works car show and it made 280 HP and 313 Lbs. of Tq. Its a bone stock 1998 model with 172,000 miles. I was just wondering what you guys thought.

If its an auto i would say those are decent for the age.

**TA98** · 05-13-2009, 05:48 AM

It is an auto, and its still the original trans. I didnt think that they were to bad considering the mileage. Im hoping to make over 325 next year with an exhaust, lid, MAF, Shift Kit, professional tune, maybe intake and throttle body.

**third_shift|studios** · 05-13-2009, 10:05 AM

I would be pissed if that was my car. I've never heard of an LS1 with such a low HP.

**km346** · 05-13-2009, 10:12 AM

Bone stock 98, 170k and running threw an auto trans... and you'd be pissed?

**ls1camino** · 05-13-2009, 02:31 PM

Originally Posted by third_shift|studios

I would be pissed if that was my car. I've never heard of an LS1 with such a low HP.

You also have to take into consideration that the 325-350hp numbers from the factory are measured at the engine, not at the wheels, so numbers like that are common.

**iwannagofast** · 05-13-2009, 03:39 PM

its rated at 305 to the motor...look up the dynos for the new mustangs and see if you still feel bad

**Firebirdjones** · 05-13-2009, 04:08 PM

Sounds about right. A stocker with an auto trans and 170,000 miles to boot??? 280 at the wheels is nothing to sneeze at.
Keep in mind dyno's are simply a tuning tool, they all vary from one to the next.

**Spaz** · 05-13-2009, 04:29 PM

Originally Posted by third_shift|studios

I would be pissed if that was my car. I've never heard of an LS1 with such a low HP.

why??? it's an auto...

**clg82** · 05-13-2009, 04:32 PM

Originally Posted by Spaz

why??? it's an auto...

confused here....so your telling me if it was a manual it would have made more horsepower with the same engine?

**Firebirdjones** · 05-13-2009, 04:39 PM

Originally Posted by clg82

confused here....so your telling me if it was a manual it would have made more horsepower with the same engine?

A little but the difference isn't huge. Just takes a little more power to turn the auto,,,and the converter slippage loses a bit. Not a big deal really.

**Hurley711** · 05-13-2009, 04:47 PM

Funny how no no one mentioned the impressive 313 lbs of tq, I dont give a damn about the hp # when you are putting down that amount of tq stock on a older car

**Firebirdjones** · 05-13-2009, 04:59 PM

Originally Posted by Hurley711

Funny how no no one mentioned the impressive 313 lbs of tq, I dont give a damn about the hp # when you are putting down that amount of tq stock on a older car

Ya it's a healthy motor for the mileage.

**xssesive** · 05-13-2009, 05:04 PM

I think with a dyno tune and slp air lid you should be close to 300HP. If I remember right I picked up about 15HP with the tune, lose the torque management on the shifts and a lower thermostat with reset fan temps! It will feel like a completely different car!

**Kaotic_ws6** · 05-13-2009, 05:23 PM

i think those are great numbers for it being auto AND 175000 miles

**Blackbird WS6** · 05-13-2009, 05:37 PM

Originally Posted by T/A98

It is an auto, and its still the original trans. I didnt think that they were to bad considering the mileage. Im hoping to make over 325 next year with an exhaust, lid, MAF, Shift Kit, professional tune, maybe intake and throttle body.

keep the stock MAF and add headers and stall to your list and your set to go

**Y2KPewterSS** · 05-13-2009, 06:45 PM

Thats about right.

**clg82** · 05-13-2009, 07:58 PM

Originally Posted by xssesive

I think with a dyno tune and slp air lid you should be close to 300HP. If I remember right I picked up about 15HP with the tune, lose the torque management on the shifts and a lower thermostat with reset fan temps! It will feel like a completely different car!

I noticed that when I got my tune he adjusted the fan temp as well. What exactly does this do that is worth anything besides keeping the engine cooler. Because I noticed that my fan is constantly on now once the car reaches operating temp.......