top speed for the ss?
I believe MOST stock vehicle (of any brand) governors are set according to the speed rating of the OEM tires. Therefore, LS or LT's are most likely governorned to 118 MPH, as they have 'T' speed rating. The SS has a 'W' speed rating or 168 MPH. That being the case, the 150-155 limitations are probably aero issues. I believe that setting governors to OEM tire speed ratings would be for liability factors.
My '09 SS came with the Mich Pilots (91W) stamped on the tire. 91 being load range, W being speed rating. Check your 'Tire and load rating' sticker inside the door jamb. This sticker is located low on the pillar (not the door) just above the rocker. It should show the size followed by the 'letter' rating. That sticker indicates what tire the vehicle was built with.
HPT logged 122 in 4th the other day. I was running out of road, so couldn't go to 5th and stretch it out. Like bartSS, I overwrote the stock governor value... however, I replaced it with 999, which means that my car will go slightly more than twice as fast as his.
My '09 SS came with the Mich Pilots (91W) stamped on the tire. 91 being load range, W being speed rating. Check your 'Tire and load rating' sticker inside the door jamb. This sticker is located low on the pillar (not the door) just above the rocker. It should show the size followed by the 'letter' rating. That sticker indicates what tire the vehicle was built with.
I might test her out a little bit on my drive home for the Holidays. The I-44 toll road through Oklahoma is long, flat, straight and generally empty of the 5-0. I think some of it's been recently repaved too. I've hit 110 as the highest so far I think. Not so worried about the safety or control issues, mostly just don't want a million dollar ticket and court date in the BFE, Oklahoma. I've only made it up to 95 on the bike - it's weird how 95 in the car feels faster than 95 on the bike. Maybe I'm too busy thinking "don't die don't die don't die" on the bike to appreciate the speed...


