power shifting into overdrive t3650

[stkjock]

Also like the others sed, powershifting into 5th is not just hard on the clutch it's hard on the tranny, The 5th gear gear set is pretty small and slamming power to it is a good way to grenade it.

Power shifting 5th is hard on the trans, WOT in 5th is hard on the clutch, a slight distinction.

 

[rojizostang]

thanks for the feed back....the reason i ask about power shifting 5th was in the wtf or amazing vidio thread....those boys from the tv show with the junk monza...can't remember the name of the show....ran significantly faster iirc powershifting thru all the gears.

still wondering about the clutch....i'm running the exedy 400. i hadn't really considered it being a problem.

not going to do another gear swap though. i've had 331's, 410s, 430s, and 2 sets of 456s in it. i've spent enough on them.

Ever do this before? It's a great time. Just don't powershift it. Your shift to fifth will happen before the half. Rough guess, you'll be 150ish out the back.

yes, since i'm nearly on the limiter in the 1/4 as is i can see this would be true.

 

[stkjock]

powershifting 2-3-4 is not an issue and yes you can pick up a .1 or .2 by doing so in the 1/4.

with 4.56s the load will be less on the clutch vs. a taller gear

 

[rojizostang]

powershifting 2-3-4 is not an issue and yes you can pick up a .1 or .2 by doing so in the 1/4.

with 4.56s the load will be less on the clutch vs. a taller gear

okay well i won't worry about it then, thanks

 

[AbdullaGT500]

I wouldn't worry about WOT in 5th gear at all unless you were boosted with tall gears.

 

[marcspaz]

Did you read my post?

 

[rojizostang]

OP... DON'T DO IT. I destroyed a TR3650 doing what you are getting ready to do.

I had a stock trans with a spec 3+ clutch, 4.56:1 FRPP gears and about 360 RWHP. I was racing and at about 115 I slammed that bitch into 5th. The syncros were slightly out of alignment due to the WOT 4-5 shift and the force literally blasted a gear shift rail into pieces and gears started to bounce around inside the gear box. 3rd and reverse were the only 2 not immediately affected, but with all the carnage, the trans was a total loss. I barely made it back to the pits under my own power.

Did you read my post?

okay well i won't worry about it then, thanks

i did...what i meant was i wouldn't worry about the clutch at wot in overdrive. i definitely won't attempt to power shift. truly, thanks for your input.

 

[lito]

yes, since i'm nearly on the limiter in the 1/4 as is i can see this would be true.

You won't launch as hard so you will need more than .25 mile to get into 5th but you will spend a lot of time there and probably reach possible top speed before the 1.0Mi and just there until the line, powershifting will make a very very small difference, if any. The less you heat the clutch/slip it, the best chance it will survive, I sincerely don't see why it wouldn't in your car.

 

[rojizostang]

You won't launch as hard so you will need more than .25 mile to get into 5th but you will spend a lot of time there and probably reach possible top speed before the 1.0Mi and just there until the line, powershifting will make a very very small difference, if any. The less you heat the clutch/slip it, the best chance it will survive, I sincerely don't see why it wouldn't in your car.

thanks. i hear you may be going to he texas mile? been talking to john and i understand you'll be tuning his car before hand locally and making the trip? it would be awesome to meet up with you guys there. thanks for your input.

 

[kdanner]

Manuel you're going to be there? John just called me tonight to talk gear ratios. I don't have anything new to test, so I'm not entering this time, but I'll be down there.

 

[TurboX]

Car 110 got registered.......

Damn I still do not know what to do about gears.

A 2.78@7500 with a 26" tire is good to 209 in 4th or 3.31@7200 is 210 in 5th.

 

[marcspaz]

Don't know what your setup is, but to break 200 with a mustang you could use a TR6060 with 3.31:1 gears and a 26.5"+ tire if you put down about 550-560 to the wheels. If you use a 5r55s or a TR3650 you will need 3.31:1 gears and a 28"+ tire and still need about 550-560 at the wheels.

 

[stkjock]

Don't know what your setup is, but to break 200 with a mustang you could use a TR6060 with 3.31:1 gears and a 26.5"+ tire if you put down about 550-560 to the wheels. If you use a 5r55s or a TR3650 you will need 3.31:1 gears and a 28"+ tire and still need about 550-560 at the wheels.

IMO, based on GT500s I've seen taken to the mile, you need more like 900-1100 whp to get to 200 in the mile.

High 500s may get one to 200, but you need a lot more than a mile to get there.

As I recall when Ford did it with the new Shelby(13+) they did it at the Nardo Track, 5 miles round.

 

[TurboX]

Don't know what your setup is, but to break 200 with a mustang you could use a TR6060 with 3.31:1 gears and a 26.5"+ tire if you put down about 550-560 to the wheels. If you use a 5r55s or a TR3650 you will need 3.31:1 gears and a 28"+ tire and still need about 550-560 at the wheels.

Negative negative

560RWHP might get you 180mph in the mile. I have 26.7" tires, Ive been told the downforce will shorten them some so to be safe I calculate them to a 26" tire. With my TR6060 a .80 5th gear and 3.31 gears I can do 210 in 5th, 4th gear is limited to 168. These numbers are at 7200rpm.

The problem is tire sizes in a (Y) rated tire, the tallest I found was 275/40-18 which is the 26.7".

I believe KDanner said there was a 13 GT500 in the spring that ran 190.

 

[rojizostang]

...

 

[marcspaz]

IMO, based on GT500s I've seen taken to the mile, you need more like 900-1100 whp to get to 200 in the mile.

High 500s may get one to 200, but you need a lot more than a mile to get there.

As I recall when Ford did it with the new Shelby(13+) they did it at the Nardo Track, 5 miles round.

Negative negative

560RWHP might get you 180mph in the mile. I have 26.7" tires, Ive been told the downforce will shorten them some so to be safe I calculate them to a 26" tire. With my TR6060 a .80 5th gear and 3.31 gears I can do 210 in 5th, 4th gear is limited to 168. These numbers are at 7200rpm.

The problem is tire sizes in a (Y) rated tire, the tallest I found was 275/40-18 which is the 26.7".

I believe KDanner said there was a 13 GT500 in the spring that ran 190.

Based on what you guys are saying, I tried to do some searching of independent test results. I found this video. looks like coming out of a curve already doing 190 mph and on a mile straight, they could only get another 6 mph out of it. Looks like you will need more than 600 at the wheels to break 200 in general and a hell of a lot more to do it in a standing mile.

I found a few GT500 owners that said they got to the mid 170's in a stock GT500 at the Texas Mile.

 

[lito]

Manuel you're going to be there? John just called me tonight to talk gear ratios. I don't have anything new to test, so I'm not entering this time, but I'll be down there.

Yes, that is the plan, looking forward to it, thanks to John for that.

 

[kdanner]

I found a few GT500 owners that said they got to the mid 170's in a stock GT500 at the Texas Mile.

That's about right, I found a few of them in the results last time that my NA junk outran.

I think a lot of people get hung up on gearing for some max speed they just won't get to in a mile. Think about it, that last part of the course doesn't last very long timewise, the last 1/4 mile takes 5 seconds at 180, not a lot of time to accelerate.