are all 3rd gen's speed limited?

------------------
91 Camaro RS, 305 TBI
No mods yet...Hopefully:
Convert to dual-cat with headers and Borla catback exhaust.
Edelbrock MPFI system.
RAM air hood & Z28 wing.
Z28 cam.
ABS system.
Positraction rearend with rear disc brakes.
Rebuilt front and rearend suspension with polygraphite bushings.
Strutbrace.
Rollbar.

 

No the Iroc and GTA and TPI T/A's didn't have speed limiters. I believe only the TPI's weren't limited, although not 100% positive. All I know is mine is limited to 115 (easily bypassed though) and my old GTA wasn't (reached 152 on the street and will never, never do that again).

------------------
1989 Camaro Convertible
dark silver w/black top
305tbi, auto, all stock
posi w/drum brakes
Check out my site at: http://members.tripod.com/philsriceb...Boy%20Page.htm

[This message has been edited by 89RagTopRS (edited January 02, 2001).]

 

Mine's an 89, and it will peg out the needle on the trip odometer button down past 115. It would do even before i modifyed anything, so I don't think mine is???

------------------
82 Z28 350, Ported #882 Heads, Performer RPM cam and intake, hedman headers,650 Demon carb,
Trans: Turbo 350 w/ 4000 stall -- Rearend 7.5 w/ Richmond 4.10's, Auburn Minispool
Best ET: 12.52@107.2
Future plans: Dart headed, Roller cammed 383 in early '01


89 RS, L03 305, Hypertech Chip,cat delete, Dynomax exhaust,K&N open element Filter,160 stat, MSD coil --Trans:700R4 Corvette Servo -- Rearend: 7.5 GM 3.42 w/ posi-lock
New Best ET: 15.03@92.7
http://www.bassettracing.cz28.com

 

this topic has been addressed several times on thirdgen. the most likely answer is yes, all tbi third gens were speed limited. the most common concensus to this is that the tires didnt have the speed rating to handle non-governed speeds(and no matter how much one swears that theirs came with z rated tires and its "one of a kind" theyre wrong,you couldnt get them,bought mine new and tried and couldnt) some people say that theirs cuts off at 110 some at 115 some as high as 125 but the vss is set at 115. thats in the prom coding book. so the difference in speed is actually a miscallibration in the speedos. the tpis were not limited as ive had both 305 and 350 and both would run to the rpm limit stock(south georgia and outback roads so you know i tried) the fastest ive heard of a stock tbi going with just the vss disabled is 140. that speeds not to hard to believe considering the rear gear in our cars stock. ive been wrong before and surely will again but ive been round and round on this one and this is the info ive uncovered as to speed limits.

jptaylor
www.geocities.com/jptaylor2/FIREBIRD.html

------------------
1989 formula
jasper 350 (punched to 397ci)
trick flow twisted wedge heads(2.02 intake and 1.72 exhaust)
1.6:1 roller rockers
jacobs omni magnum ignition
isky cam
flowtech jethot coated headers
mufflex 4" mandrel stainless exhaust
no cat
holley 670
open element
custom fixed headlights
97 formula interior
macewen white faced gauges
3.42 posi rear end
baer racing 4 piston calipers front and rear
underdrive pullies
hard wired cooling fans www.geocities.com/jptaylor2/FIREBIRD.html

IN EVERY RACE THERE IS A WINNER AND A VICTIM, YOU LOOK LIKE A VICTIM!!!

[This message has been edited by jptaylor2 (edited January 02, 2001).]

 

My formula came with V rated tires stock, it's on the build sheet, and on the door label.

------------------
1989 Pontiac Firebird
Formula W6S LO3 TBI 305
-180 degree stat
-Hooker Cat-Back




1985 Camaro IROC-Z LB9

http://www.geocities.com/krt80/

[This message has been edited by Keith5 (edited January 07, 2001).]

 

My car for some reason does not have a speed limiter. I've had it passed 125 that was checked on a lydar laser gun by a state trooper. And all rs and firebirds with 15" or 16" came with T speed rated tires Z-28 Formulas etc... range from T-Z most z rated tires were goodyear gatorbacks. Most of the tires corresponded with what your speedo said it was capable of.

 

swap to a 7747 ecm. only takes cutting 2 wires and swaping 2 others. and you not only loose the speed limiter but you can also burn chips too. you can burn chips for the current ecm but it is not as well mapped out yet.

HTH,
RS

------------------
1992 Camaro RS
Mods:
Custom chip, 14x3 Open element w/ K&N filter, MSD 6a, MSD GM blaster Coil ,MSD 8.5 SC wires, AFPR,Fuel Pressure gauge,A/F guage, 3-Row Al rad. , 180* t-stat, Hooker 1 5/8 headers, 3" Catco cat, 3" Hooker Aero Chamber cat-back, "Ultimate TBI" mods, Nitto 555R Drag Radials

Next

454 TB,intake,SLP Posi,3.42 gears,LCA, 350 crate, Al Driveshaft

Best Time: 15.279@89.02MPH
Underdog Racing

 

When I ran my RPO code, is says QLC: Tire All, P245/50ZR16/N BL R/PE ST TL HW4

So what you are telling me is that GM tells me Im getting Z rated tire in the RPO codes, but they are not really Z rated tires.


------------------
Godti
'89 Trans Am (Red)
305 TBI 5spd

 

my 88 never had a speed limiter and all it came with was the base 305 TBI motor and the 15" GTA look-a-like rims. I don't think any 88's had a speed limiter. I thought they didn't start that until 90 or 91 but a few with 89's proved me wrong on that thought.

------------------
1988 TA 300+hp 350 w/ TBI and Holley TB unit, Holley projection intake,
WC T-5, 3.42 gears w/ Auburn posi. MSD 6A, edelbrock TES headers, dynomax 3" cat and cat-back system, ACCEL coil, polyurethane bushings all around, aluminum driveshaft, Mr. Gasket open air cleaner.

1993 S-10 w/ 4.3L V6 TBI, slightly bigger cam, Mild polish job and 3 angle valve job on heads, Edlebrock TES headers, Dynomax cat back, MSD 6A, ADS chip

2000 Kawasaki KX 125