Horsepower To Weight

[eschaider]

Originally Posted by RICK LAKE

eschaider I love a crazy data printout. Jag rearends don't have a 3.46 rearend ratio to start. 2.88/3.07/3.31/3.54/3.77/4.09/4.54 and up. I have seen very few cobras in the 10's with even a warm 427 motor through street side pipes. Low 11's yes. This car you came up with I would like to see myself. Keith Craft showed up with a goodyear tired Kirkham and a 527 monster motor and ran about a 10.38. The weather was not perfect but the times show that his car was running well. This story book cobra is not running a 10.27 period. You give the cobra a higher gear for the rearend and also a higher trans ratio for 1st and 2nd gear. It's also got a 900+ lb advantage in weight to boot. Viper 3.07 gear and a 2.66 first gear in the trans is no race at all. The torque of a V10 makes this race close. Run the test with the same rearend gear, you will not like the out come. There was a race done years ago with an L88 vette and a 427 cobra. Vette gave 500 pounds and both had the same gearing. It was a split on 2 races. The cobra hurt the clutch and the vette blew a half shaft. Both car where in the 11's. My car runs low 12's with 335/35 17" tires and a 3.31 gear. 482 cubes and a race trans. 500+ HP and Torque through street side pipes. It will not hook up well on any track with a ton of glue on the surface. I know from smoking 2 clutches. A cobra will beat the Viper 6 out of 10 times. It's also hard for a cobra to do a 1.59 60' time. More like high 1.7- 1.8. Your time is .59 seconds from prostock numbers. I will look up the articles for the ACR viper and get the times and speeds from them. Round 2 coming up. Rick

Rick,

You're nitpicking. The basic Cobra I used was an SPF and they all come with 3.46 rear gears since about mid to late 2005. Your comments about the Viper are surprising. Thats just the way Dodge made them. I didn't add anything or subtract anything those are their specs not mine including the 900# of additional weight.

With respect to the performance you're entitled to challenge it. I think the challenge has little credibility, especially in light of the post immediately preceding mine. If you read the post immediately before mine you will see a 10.70 Cobra (and can watch the actual run) go 130 MPH with a (by his own admission) soft launch and what is clearly granny shifting the car through the gears. Drive it hard and you will very closely approximate the simulation.

Fiddling with the gears on either car will only at best fine tune the performance of either. It will not make quantum leaps in performance.

The bottom line here is HP/#. The more you got the quicker you go. It's that simple! If the driver is a clutz, scared of the car, born under a full moon on Feb 30 - it don't matter! If you want to know how quick the car goes get a driver that can actually drive the car without going into catatonic shock.

The only thing that matters is HP/#. If you put chicken fat on the tires of one of the cars you are adulterating the test. Make the HP, hook them up, launch both cars, drive them like race cars (assumes the driver can) and the car with more HP/# wins every time.

Road racing is different. What the poster asked about was a good old fashioned drag race - street style. The Cobra is the unquestionable winner.

By the way I respect your right to a different opinion - I just think you're wrong, on this one anyhow.

Ed