Alexarz
Enthusiast
Hennessey does 10.77 @ 133mph in '08 Viper
With just exhaust and header mods on a badly prepped track. Also, notice that he hit 135mph on street tires in the 1/4 mile. Here is a paste;
Just got back from the 1/4 mile. Here is the short report (the longer report, pics and videos are coming later):
1. 2008 Viper SRT10 convertible. 100% stock engine, airbox, suspsension.
2. Mods: Hennessey long tube 1 7/8 stainless steel headers with Burns collectors flowing through full 3 inch. stainless exhaust with mufflers and no cats. Also ran with Stoptech cross drilled rotors which save about 8 lbs per corner.
3. Car dyno'd 608 rw hp SAE on the Dynojet a few days ago.
4. 93 octane pump gas - about a 1/2 tank.
5. Car was run at full weight which was 3462 lbs with fuel and no driver.
6. First 4 passes were on BFG 345/18 drag radials running about 15 psi.
7. All of the drag radial runs were in the 10's with some tire spin and wheel hop.
8. Air temps started around 50 deg. and ended at about 56 deg. Track was cold. Track prep was OK but not great as we ran out of VHT today. I need to give the track owner a hard time about this as he should have been better prepared for us....
9. First run was 10.91 @ 133 mph, 2nd run was 10.83 @ 132 mph, 3rd run was 10.77 @ 133 mph and 4th run was 10.91 @ 131 mph. The best 60 ft. was the 10.77 run with a 1.77 short time.
10. Switched over to the street tires and aired them down to 15 psi. Got way more wheel hop and tire spin on these.
11. Best run on the street tires was the first run at 11.33 @ 135.2 mph! That speed is shockingly fast. Next run was 11.4 @ 133 mph. 3rd run was 11.8 @ 133 mph and the traction had pretty much gone away. So we didnt make any more runs.
OK, there you have it. First time for a stock motor 2008 Viper with bolt-on headers, exhaust, rotors and drag radials goes some solid 10's.
The 2008 Viper is one impressive package all the way around. I am sure this is just the begining.
More info. later on. I am tired and want to go watch some football.
With just exhaust and header mods on a badly prepped track. Also, notice that he hit 135mph on street tires in the 1/4 mile. Here is a paste;
Just got back from the 1/4 mile. Here is the short report (the longer report, pics and videos are coming later):
1. 2008 Viper SRT10 convertible. 100% stock engine, airbox, suspsension.
2. Mods: Hennessey long tube 1 7/8 stainless steel headers with Burns collectors flowing through full 3 inch. stainless exhaust with mufflers and no cats. Also ran with Stoptech cross drilled rotors which save about 8 lbs per corner.
3. Car dyno'd 608 rw hp SAE on the Dynojet a few days ago.
4. 93 octane pump gas - about a 1/2 tank.
5. Car was run at full weight which was 3462 lbs with fuel and no driver.
6. First 4 passes were on BFG 345/18 drag radials running about 15 psi.
7. All of the drag radial runs were in the 10's with some tire spin and wheel hop.
8. Air temps started around 50 deg. and ended at about 56 deg. Track was cold. Track prep was OK but not great as we ran out of VHT today. I need to give the track owner a hard time about this as he should have been better prepared for us....
9. First run was 10.91 @ 133 mph, 2nd run was 10.83 @ 132 mph, 3rd run was 10.77 @ 133 mph and 4th run was 10.91 @ 131 mph. The best 60 ft. was the 10.77 run with a 1.77 short time.
10. Switched over to the street tires and aired them down to 15 psi. Got way more wheel hop and tire spin on these.
11. Best run on the street tires was the first run at 11.33 @ 135.2 mph! That speed is shockingly fast. Next run was 11.4 @ 133 mph. 3rd run was 11.8 @ 133 mph and the traction had pretty much gone away. So we didnt make any more runs.
OK, there you have it. First time for a stock motor 2008 Viper with bolt-on headers, exhaust, rotors and drag radials goes some solid 10's.
The 2008 Viper is one impressive package all the way around. I am sure this is just the begining.
More info. later on. I am tired and want to go watch some football.
Last edited:
Now go **** a tree..........
