<BLOCKQUOTE>quote:</font><HR>Originally posted by LT1KICKER:
147 mph on V-rated tires on a 91-93 9c1/L03??? No way. Not even with an L05. My 92 9C1/L05 hit the peg at 133. 147 is the block on 94-96 9C1/LT1s.<HR></BLOCKQUOTE>
<sigh>
I never said that a 91-93 w/LO3 could reach 147 mph. I said that the speed limit installed in the car (in the ECM or PCM) will be related to the speed rating of the tires installed at the factory.
1. non-9C1, non-ZO9, non-WX3 (civilian Bcars) 91-96 models.
108 mph limiter with all tires. Note that most civilian Bcars got S-rated tires, and that's where the 108 mph number came from.
2. ZO9 model conversion, 91-93 models, with either LO3 or LO5 (1993 only)
probably got 130 mph limiter, no matter whether H- or V-rated tires. The ZO9 model probably wouldn't exceed 130 mph anyway.
3. 9C1 with L99, 94-96 models.
120 mph limited regardless of tire (H or V).
4. 9C1 with L03, 91-93 models, H-rated tires
130 mph (even through the max speed was 128 mph).
5. 9C1 with LO5, 91-93, H- or V-rated tires.
130 mph for H-rated, 147 for V-rated (even though the max speed was 133 during 1992 MSP test)
6. 9C1 with LT1, 94-96, H- or V-rated tires.
130 mph for H-rated, 147 for V-rated (even though the max speed was 141 during 1994 MSP test)
7. WX3, LT1, 94-96, Z-rated tires. 154 mph limiter, due to driveshaft critical speed, even though the bone stock car max speed was 142 based on magazine tests, and 145+ mph on anecdotal comments from owners.
The rule-of-thumb, in case you didn't get it, is that the speed limiter of the car NEVER exceeds the speed rating of the factory-installed tires.
In most cases the speed limiter equals the tire speed rating (and why I said it was related to it). I leave it to you to figure out why this is true in most cases.
In other cases the speed limiter is lower than the tire rating (L99 9C1s for example, H rated tires, 128-130 mph ability, but 120 mph limiter).
A search on the topics of speed limiters, and top speeds will reveal that much, if not all, of the items above have been posted before.