110 MPH speedometer on Z28

**Dave-TransAm** · 03-12-2010, 01:49 PM

My friend just recently bought a 1994 Chevy Camaro Z28. Its got the 350 ci LT1 engine. It puts out 275 HP and 325 TQ and the speedometer only goes up to 110 MPH. I have A 1994 Firebird Trans AM GT with the same exact engine and everything and puts out the same HP and TQ but my speedometer goes up to 160 MPH. Can anyone tell me whats up with that please?

**67CamaroRSSS** · 03-12-2010, 01:53 PM

Originally Posted by Dave-TransAm

My friend just recently bought a 1994 Chevy Camaro Z28. Its got the 350 ci LT1 engine. It puts out 275 HP and 325 TQ and the speedometer only goes up to 110 MPH. I have A 1994 Firebird Trans AM GT with the same exact engine and everything and puts out the same HP and TQ but my speedometer goes up to 160 MPH. Can anyone tell me whats up with that please?

Tires.

Not all Z28's came with Z-rated tires. Those that didn't had a speedo that went only as fast as the tire rating. The computer will limit the top speed also.

**MrMasterCraft** · 03-13-2010, 05:58 PM

Originally Posted by 67CamaroRSSS

Tires.

Not all Z28's came with Z-rated tires. Those that didn't had a speedo that went only as fast as the tire rating. The computer will limit the top speed also.

and a two peice steel driveshaft if I'm not mistaken

**67CamaroRSSS** · 03-13-2010, 08:20 PM

Originally Posted by MrMasterCraft

and a two peice steel driveshaft if I'm not mistaken

IDK about 2 piece. 2.73 cars did come with a steel DS (vs aluminum for 3.23 cars) but it's all in 1 piece. My 02 was a 2.73 car. Not any more though. Along with 3.73's I went with a stock aluminum DS.

I know about the top speed limiter as my 96 Z28 vert wouldn't go faster than 118 mph no matter how hard I pushed on the pedal (trust me, I TRIED!). My next door neighbor (who was a GM mechanic) told me that verts were limited to 118 mph regardless of tire type.

**MrMasterCraft** · 03-13-2010, 09:06 PM

The cars limited to 118 (except the verts?) had 225 tires, correct?

**67CamaroRSSS** · 03-13-2010, 10:54 PM

Originally Posted by MrMasterCraft

The cars limited to 118 (except the verts?) had 225 tires, correct?

It was either 225 or 235 wide but they weren't "Z" rated...

My 96 was limited to 118 even though it had "Z" rated tires because it was a vert...

**MrMasterCraft** · 03-14-2010, 09:15 AM

Sometimes I don't understand GM

**zeetwentyeight** · 03-14-2010, 09:24 AM

Maybe its got a motor swapfrom a v6 i think the v6 only showed 110 not for sure on it tho

**9T8W66** · 03-14-2010, 09:25 AM

Originally Posted by MrMasterCraft

The cars limited to 118 (except the verts?) had 225 tires, correct?

235/55/16

Originally Posted by 67CamaroRSSS

IDK about 2 piece. 2.73 cars did come with a steel DS (vs aluminum for 3.23 cars) but it's all in 1 piece. My 02 was a 2.73 car. Not any more though. Along with 3.73's I went with a stock aluminum DS.

I know about the top speed limiter as my 96 Z28 vert wouldn't go faster than 118 mph no matter how hard I pushed on the pedal (trust me, I TRIED!).
My next door neighbor (who was a GM mechanic) told me that verts were limited to 118 mph regardless of tire type.

LT1 Cars yes LS1 Cars No

[ame]http://www.youtube.com/watch?v=-1s8vfvhNys&feature=player_embedded[/ame]

163 mph droptop

**MrMasterCraft** · 03-14-2010, 10:39 AM

9T8W66 - I remember watching that 11 years ago!!! That's crazy as hell, it was either in the spring or the fall, I was going over to my gf at the time, her house to get my first peice of ass (or so I thought). I remember that day like it was yesterday... ain't even gotta watch that video, and I can tell you 1/2 of whats in it