Originally Posted by hvactech
Originally Posted by willwren
Tranny is built and gauranteed for it. Including test runs up to 130mph in prep for Speed week next year.
That first video was hard to watch....I feel for that tranny. Hope it holds up like you say it will.
Also, I've read you mention this 130mph top speed thing before. Is this a big deal to you? No disrespect intended but we used to run 140 plus in the GTP'* easily and I know my Bonnie gets up to 130 real quick and has plenty of pull left. I just haven'* had the chance to let her go with the taller gearing. 150 does not seem out of reach I would think. I've heard claims of hitting 160 in a modded GTP.
My tranny is gauranteed and warranted for 2-wheel straight-line burnouts and will hold. Every single component was beefed up including a custom diff. On top of all that, the 4T60 is a more durable trans in stock form to begin with than the 4T65, and much less problematic. Even coupled with the Series 2 L67 in 1996, these 4T60E'* far outlast most 4T65E'*.
Most Supercharged Bonnevilles are limited at 128 +/- 2mph. All others are limited to 108. For the Series 1, the triple digits are much more challenging when you take into consideration the horsepower needed to overcome aerodynamic drag at some speeds. Add that to the fact that the Series 1 delivers all of it'* power in the lower rpms.
130mph is the max speed I can run for the next year and keep my warranty valid, OTHER than on the Salt Flats. There I can run faster without invalidating my warranty.