In another topic someone was talking about not lifting off the gas when you shift a manual. How does this work?? Wouldn't you just hit the limiter????

 

i dont think thats power shifting, thats shifting without using the clutch, when i race, the pedal is planted all the time, if you shift fast and dont miss a gear it'll be fine, if you do, let off that gas

 

I powershift and yes you pretty much hit the limiter (Not all the time). But it acts like launching the car every shift, instead og dumping the clutch at 4000 (if you let off) you are in turn dumping the clutch at 6000 (whatever your cars limiter is). I say pretty much because I know in my car on my 1-2 and 3-4 shifts it is not on the limiter, with my light set at 5500, and a 6250 limiter.

I might not be the person to ask, because my theory is, if you arent powershifting the car, you arent really driving it to its potential, and should be using an auto!

 

" might not be the person to ask, because my theory is, if you arent powershifting the car, you arent really driving it to its potential, and should be using an auto!"


Unless you have a T5.

 

I have a T5!

 

Not for much longer

 

Whys that, I have had the T5 powershifting it for a while and it hasent made one grunt or issue. Plus when it does go in go the G-force gears and it will be good for a long time!

I dont know if the GM T5 is any different but our T5s hold up to stock and mild cars pretty well.

 

I broke mine w/o powershifting(though I wasn't exactly be ing gentle )

 

The Mustang T-5s seem to take a little more abuse than the F-body T-5s. Don't ask me why though...maybe 'cuz they weigh less? (3100lbs stock for the Mustang GT vs. 3400lbs stock for my RS)

 

They have different ratios, I know for sure. what that has to do with power capability I don't know. Usually numerically higher gears make the trans less strong, and i know a Ford T5 has a numerically higher 1st gear.

 

I know our first gear is a 3.35, and the aftermarket stronger trannies have a 2.95!

 

ours have 2.95s. What the heck?

 

IDK, we have 3.35s in ours stock.

 

only certain year mustangs got the 3.35 first gear. i forget what one, if u do a search on yahoo u can uncover the info. other than the certain year the other ford T5s have the same gearing as the GM units. i know for sure my friends 88 GT dosnt have a 3.35:1 first gear, it has 3.55 gearing in the rearend and it will still acheive 40mph at 5500rpms in first gear, where as if he had the 3.35 first gear it would take 6000rpms to hit 40mph. also i think the T5s last a bit longer in the mustangs due to the 302s not producing nearly the same torque as the 305/350 gm engines, also the fox body line is a lot lighter.

 

Other then a first gear ratio difference, internally they are identical..the case is the major difference, the gm version being the weaker..BUT, there are those rare instances were they hold up very well...Tim Burgess launches his LB9 (410hp+juice) @ 6,000 againt the revlimter with 27"x11.5"-15" Hoosier Quick Time DOT Pros, on the stock tranny and rear end for 1.6 60 ft's...MF'er runs 11.7's

IIRC the 302 and 305 make the same about the same torque, but due to the intakes its in different spots...also the higher the gear (numerically) the less amount of load on the driveline...so the guy would break his 3.23 set before his buddy would break his 3.73's

 

ohh yea..i powershifted my mostly stock G92 LB9 to a 14.1@96...then i had to put in a second gear after i flattend all the clutching teeth

 

My true definition of "powershifting" would be shifting through the gears with no clutch and not (or little) letting off the gas. Just slamming real hard into the gears. definately not good for anything mechanically but that's how the nascar guys do it!!! try it if you feel like rebuilding your tranny after every couple races

 

Get dog rings and you can shift w/o a clutch... but they're not very street friendly...

 

Maybe because thier engines dont produce the same amount of tq.

 

I think I will just stick to shifting as fast as I can. I don't feel like replacing my T5 just yet.

 

I wouldnt recommend powershifting a OEM transmission. It is true that it can be done, but that dosnt mean you should do it. The idea is basically that at a certain RPM the teeth line up and you can just slam it into the next gear. To find the RPM that the teeth line up you can gently try to nudge the stick into gear while slowly moving up the RPM range. At a certain RPM it will want to shift. But the problem is that you need to get it perfect when you are racing or you will prematurely wear out the transmission and it will break. Doing this is a risk in my opinion. If you want to powershift alot and not worry about littering the road with transmission pieces, then I say you buy a transmission that is designed to do it. The Richmond Super T-10 Plus Roadracing transmission is a good example. Four speed countershaft helical gear transmission synchronized in all gears except for 1st and reverse. You can powershift that all day long and it wont break. They also make a street version if this is a street car.

 

I'm still trying to figure out why there is a mustang guy in here...........

 

Cause they hang out here all the time. They usually give some good feedback. Hell one is an "honorary F body owner"

 

Keep figuring... there are 4 or 5 Mustang guys here!

 

I'm a mustang guy. I'm a little biased though. My dad works for Ford, so I know more about 'Stangs than GM's. I still like my 'Maro though... I miss my Mercury Grand Marquee. Too many reverse slams did it's trans in. I know its dumb but it's fun. Right now its on jacks in my garage waiting for pay day to get the rebuild kit.