Top speed concern???
Administrator
Joined: Mar 2001
Posts: 367,704
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
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St. Jude Donor '03 thru '25
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CI 5, 8 & 11 Veteran
Something is not right with your car - a stock C5 should go anywhere between 170-175 mph. Even with your changes, you should do better than 146.
Racer
Joined: May 2006
Posts: 352
Likes: 42
They have different final drive ratio's
Gear Ratios M30 4-Speed Automatic MM6 6-Speed Manual M12 6-Speed Manual
Auto MN6 M12
1st 3.06:1 2.66:1 2.97:1
2nd 1.62:1 1.78:1 2.07:1
3rd 1.00:1 1.30:1 1.43:1
4th 0.07:1 1.00:1 1.00:1
5th - 0.74:1 0.84:1
6th - 0.50:1 0.56:1
Final Drive Ratio 1.90 (std) / 2.19 (perf)(6) 1.71 1.92
Z06 has more power, less aerodynamics and a higher RPM cut-off 6700 vs 6200.
Gear Ratios M30 4-Speed Automatic MM6 6-Speed Manual M12 6-Speed Manual
Auto MN6 M12
1st 3.06:1 2.66:1 2.97:1
2nd 1.62:1 1.78:1 2.07:1
3rd 1.00:1 1.30:1 1.43:1
4th 0.07:1 1.00:1 1.00:1
5th - 0.74:1 0.84:1
6th - 0.50:1 0.56:1
Final Drive Ratio 1.90 (std) / 2.19 (perf)(6) 1.71 1.92
Z06 has more power, less aerodynamics and a higher RPM cut-off 6700 vs 6200.
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
Burning Brakes
Joined: Dec 2006
Posts: 1,092
Likes: 0
From: Deerfield VA
St. Jude Donor '07
I agree, something is wrong, I've done 148 in my Mustang, nowhere near the motor, nowhere near the aerodynamics! I've had the the 'Vette up to 130, and it was still pulling like a freight train!
John
John
Thread Starter
Too Much Fun
Joined: Sep 2004
Posts: 1,691
Likes: 205
From: Florence, AL
*****UPDATE*****
Ok, here is the latest info:
I shift out of 3rd at 126MPH
IN OD I am at 146MPH at 5100RPM's and Car is pulling VERY HARD until I reach this point and it is like car just stops pulling at this speed?!?!?!?!
Any more ideas? I just received new BOSCH 30lb injectors today, but doubt this is going to affect my top speed concerns.....
Ok, here is the latest info:
I shift out of 3rd at 126MPH
IN OD I am at 146MPH at 5100RPM's and Car is pulling VERY HARD until I reach this point and it is like car just stops pulling at this speed?!?!?!?!
Any more ideas? I just received new BOSCH 30lb injectors today, but doubt this is going to affect my top speed concerns.....
