|
This thread is fun to read!!!
:) |
167 mph top end and and 10.5 second 1/4 mile times! Wow!
I have a Roush 427 with 515 HP and similar torque TKO five speed and 3.46 rear axle ratio. My car is not gonna be that fast on either end but it is nice to know your car is. Best wishes for 2013. Russell |
Russ,
Your comment comes up frequently, and the only answer I have is the gear ratio differences between the T56 and the TKO along with my lower rear gear ratio. Compare the T56 to the TKO and you will see a little lower ratio (normally) in the T56 vs the TKO in the first three gears and a closer ratio (normally) between 4th and fifth in the T56 vs the TKO which all contribute to a little quicker acceleration through the first 5 gears. If we were both running the same overall gear ratio, I doubt there would be much difference in acceleration with both of our engines coming off the same dyno making very similar horsepower and torque numbers. This information is what I believe the initial thread question was about. I hope we have helped answer the question.....although my combination works for our horsepower and torque curves it probably wouldn't work as well with another engine. |
Quote:
Cheers, Glen |
Quote:
Wheel OD doesn't matter much in a drag race. At least I cannot think of why it would. What I was actually talking about is how sticky the tires are. Street tires are hard designed for long wear. Drag slicks are very sticky. A huge difference in traction. Then the drag strip puts a tacky surface down. They do use different stuff for different competitions. The tack will pull your shoes off, if you don't have them tied tight. So from one track to another, even the same track on a different day, there can be quite a bit of difference. Horse power at a dyno is corrected to what the engine would have produced at sea level at a specific temp and other weather conditions. In theory, this allows an apples to apples comparison regardless are where the dyno is located and what the weather is. The point is that no matter what the dyno said the Hp is for an engine, the elevation of the track and the weather conditions will impact the true power that the engine is making. |
Quote:
Getting to 9's at the track, I expect you have some type of a drag slick. Are you lifting the front wheels at the track? I expect a straight axle would allow much better weight transfer to the back wheels, in addition to not breaking. I agree you could go faster. |
Quote:
I run the same tires at LCS as I do at the track. M/T Street ET's Radial. 275/50/15 |
TKO and T56
Quote:
Seriously, I don't think I would ever have the stones for 167 MPH in passenger's seat with a professional driver at the wheel. The BMW rear axle is not up to drag racing, either. You have done your homework well. Right now, I am getting big mufflers to pass "tennis ball" test.' Spirited street driving is all my car will ever see. The road race/rally in Big Bend and Silver State? would be at top of my "Bucket List." Have a great 2013. Thanks again. Russell |
The only difference I can think of - other than overall diameter of the tire - when wheel OD is important in a drag race is the availability of tires. I am not aware of anything but drag radials available for 17" wheels. There is a lot of difference in a drag radial and a conventional "slick" ...mainly in the flexibility of the sidewalls which help on initial shock, growing in size as speed increases and more (softer) choices of rubber compounds for the "slicks".
|
What about you SBF (347 and under) guys? I know there are some very impressive performers - daily drivers - out there.
Cheers, Glen |
Quote:
|
Quote:
Aprox 380ish rwhp. https://lh5.googleusercontent.com/-B...764/img032.jpg https://lh6.googleusercontent.com/-N...50/cobra-1.jpg https://www.youtube.com/watch?v=-whV_8NhNXk |
Gobra update:
Over 30,000 miles One more weekend of 10.50's @ 130+ mph in the quarter mile One more 118 mile long Big Bend Open Road Race completed (104.7 mph avg. speed) Valve covers still have not been removed |
I have posted this before. But if you removed the weight, and God forbid, put in a turbo charged worked rotary in a Cobra, would it beat a V8?
JD |
Qwik 1....those are quite impressive numbers. The best I have seen for a 306. Please tell us more about your car. Thanks !
Jody |
Quote:
So how could someone with no knowledge, of what you ask, answer? If you want an answer, give some information. Do you mean a Mazda? What does that engine weigh? How much torque at what rpm? Peak Hp at what rpm? Better yet a chart of torque verses rpm over the entire rpm range. Then how much boost will you add with the turbo? If you know this you pretty much know the answer. Oh yea and which V8? Frankly most would consider putting a turbo charged rice burning rotary into a replica of the ultimate muscle car, as distasteful as pissing on a picture of the virgin Mary. If it will make you feel better, I'm sure that a highly modified rotary could beat a bone stock 210 Hp 5.0 Ford small block, but what would it prove? |
No offence taken. I don't know a lot about the power output of a rotisserie, just that they don't have a lot of torque, but rev high and are good in low weight cars. Yes, I would never consider putting one in a cobra, I'm just chucking an idea out there, in case someone does know.
JD |
Quote:
|
| All times are GMT -7. The time now is 05:39 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: