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Apr 2, 2007 | 11:25 AM

tatman

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is it true....

that a regular z28 ls1 (not an ss) is governed at 108mph?

Apr 2, 2007 | 11:34 AM

Ericbigmac83

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no, some are limited based upon which speed rated tires they get tho

Apr 2, 2007 | 11:38 AM

2QUIK4U

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Some of the older A4 z28's with 16" wheels and tires were speed limited but I think it was around 112mph.

Apr 2, 2007 | 11:39 AM

slikrider20

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I read in a car review in the z28 unless you had the z rated tires it was governed at 108....but hell my v6 3.4 is governed at 115 lol

Apr 2, 2007 | 11:44 AM

RPM WS6

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From: Schiller Park, ILL Member: #317

Quote:

Originally Posted by tatman

that a regular z28 ls1 (not an ss) is governed at 108mph?

As stated above, the only way this is true is if the car was originally optioned without the Z-rated tires.

So long as you had the Z-rated tires stock, the factory limit is set to something like 162-163mph.

Apr 2, 2007 | 12:41 PM

tatman

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im about to buy a 2001 ls1, what info can i provide you guys about the car im looking at to tell me if it has the z rated tires? or what do i have to look at ti see if it has it or not?

Apr 2, 2007 | 12:57 PM

12secSS

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The tire info should be on the driver's side door jamb. If it states Z-Rated tires, it will be limited to 160 MPH. If it does not have Z-Rated tires, it will be limited to 120 MPH.

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Apr 2, 2007 | 01:17 PM

kozak

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haha, 108, haha. but seriously some of the older z28's with a certain performance package (g32?) were governed to 120 you can tell these cars because they have a 120 mph speedo. my dad has one of these cars. it has real low rear end gears and a 120 speedo and "crappy" tires.

Apr 2, 2007 | 01:18 PM

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Nine Ball

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keep in mind that the speed limiters are easily removed with even a simple computer tune or by using something like the Hypertech programmer or such.

Apr 2, 2007 | 01:43 PM

#11

tatman

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[QUOTE=Nine Ball]keep in mind that the speed limiters are easily removed with even a simple computer tune or by using something like the Hypertech programmer or such.[/QUOTE

thats true, its just hard to comprehend the fact that a 310hp 6 speed 5.7 liter v8 engine would stop at 108 when i did 125 with my P.O.S 4 cylinder passat

Apr 2, 2007 | 01:50 PM

#12

staringback05

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like stated before it depends also on the tires....your not going to be doing that high of a speed on the non zrated tires for long...

Apr 2, 2007 | 04:10 PM

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2000badbird

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non z rated tires will hold up to high speeds for a little while i would not trust it tho

Apr 2, 2007 | 04:32 PM

#14

1meantransam

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my friends cut out at 117, mine doesnt cut out even with the programmer off

Apr 2, 2007 | 06:22 PM

#15

RPM WS6

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From: Schiller Park, ILL Member: #317

Quote:

Originally Posted by 2000badbird

non z rated tires will hold up to high speeds for a little while i would not trust it tho

I used to run my (non Z-rated) BFG DRs at pretty high speeds on the expressway. They did fine for short blasts, other than feeling a little loose above 110mph.

I think the speed rating will only be an issue for sustained speeds.