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Stock M5 (394 HP, 4175lb test weight): 0-60 in 5.04, 1/4 in 13.7 @ 102.8
M5 with exhaust & ECU (401 HP, 4150lb, 7200 redline): 0-60 in 4.99, 1/4 in 13.6 @ 106.2
M5 with full N/A package (504 HP @ 7600rpm, 7900 redline): 0-60 in 4.76, 1/4 in 13.0 @ 113.2
Supercharged M5 (550 HP, 500 '/lbs): 0-60 in 4.2, 1/4 in 12.5 @ 114.5
E46 "Samir Special" (400 HP, 3400lb): 0-60 in 4.5, 1/4 in 13.0 @ 111.1
Stock Viper RT/10: (450 HP, 3550lb): 0-60 in 4.37, 1/4 in 12.6 @ 110.4
BPU* Viper RT/10: (505 HP, 3550lb): 0-60 in 3.99, 1/4 in 12.1 @ 114.6
Observations:
* The E46 benefits greatly from its light weight, and should easily beat a relatively stock M5.
* The supercharged M5 and both varieties of Viper as heavily traction-limited off the line. Both would benefit greatly from drag radials in a real race.
* Torque is king for 0-60 races. The 500HP normally-aspirated M5 doesn't improve much over the stock M5 because all of its additional power is made at high revs, so it benefits most at 30+ mph. For a street car, a supercharged M5 would be much better.
* The Viper results are significantly slower than most magazine tests, suggesting that the Viper makes more than its listed power. Stock '97+ Vipers make 400 RWHP and 450 RW '/lbs, suggesting real crank figures of 460 HP and 512 '/lbs.
Cheers,
Ben
* BPU == "Basic Performance Upgrades", a term borrowed from the Supra group. For the Viper, these are intake (K&N filters, smooth tubes), headers, and exhaust. On the dyno, Vipers with these mods make 440 RWHP and 490 '/lbs, compared with the stock 400 RWHP and 450 '/lbs
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