When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
IF you are under acceleration you cannot pull it out of gear, the helical angle and the torque will not allow it...
When drag racing 4 speeds with clutches you pull on the lever pretty hard... when you stab the clutch it goes right to the gear, no thinking, no lifting from the throttle.
Back in the days I was drag racing (60's) you didn't even use the clutch to power shift, just to get off the line. You simply lifted slightly off the accelerator before you stabbed in into the next gear. Of course, having a Hurst Competition Plus shifter help immensely.
you could get away with stuff like that with those muncies....even my 80s toyota trucks could do it...todays trans not so much.
Powershifting was never worth it to me, those who have and got time slips can vouch for that. Did a lot of it with my 70 Z but you better not miss a shift.
I had a 1974 L-82/M-20 coupe back in the 80's. I was driving it one day accelerating and shifting gears, when SNAP-CLUNK. The clutch pedal then went to the floor with no clutch dissengagment. I pulled over and shut the car off, still in gear. Upon further inspection, I discovered that one of the arms on the clutch cross shaft had snapped off at the weld. I was about 10 miles from home with about 15 stoplights to go through.
I quickly learned how to shift gears without a clutch in traffic. Shifting from 1st or 2nd to neutral was the easy part. Lift up on the throttle and pull back on the shifter slightly. The harderst part was getting the car in first gear from a dead stop. I had to get out and push, jump in, and shift into gear. Once moving I could find that "sweet spot" combination of throttle and vehicle speed to shift from neutral into a gear without grinding anything. I made it home by taking side streets to avoid stop lights and stop signs. Cross shaft was then replaced..
Last edited by '73and'75; Oct 23, 2020 at 12:23 PM.
Barry. It is VERY bad practice to drive with your hand resting on the shifter.
My old Driving instructor would whack my hand with his clip-board!
This will wear out the shifter linkages , shift pins and bushings. All these things are hard mounted and will develop play. (as opposed to cable shifters where the shifter is 'remoted' from the tranny/gearbox.)
Your hand/ arm is a 'motion damper' all the stuff BELOW your hand is moving.....wearing itself out.
You've heard of the M-22 Rock Crusher tranny? The gears were almost straight cut, this was to allow power shifting through the gears with 'rev-matching'
It's is amazing to me that they have a 'gizmo' for this now. God knows, you wouldn't want to break a nail! lol
What you are doing is "floating" gears like truck driver does. At a certain RPM the you can shift gears without the clutch. You have to be much more precise with helical cut gears than with straight cut but it is definitely possible. I used to find myself doing it all the time in my Corvette until Big Brown gave me an Automatic tractor.
I pop mine into neutral all the time without the clutch. I also upshift sometimes without the clutch just because. I do it my 3 speed on the floor hurst shifted truck too. I was always told that if there's no grind, you're not hurting a thing. I too have driven the Corvette home with a dead clutch pedal. The ball stud on the block for the Z bar broke off. Fortunately I didnt' have to stop at all until I got to the gate across my driveway in front of the garage, and I just pushed it in from there.
On one of my old cars, I was able to drive off from a stop with a broken clutch.
The starter motor was strong enough to start the car from a stop while it was in gear.
Clutchless up shifting from there got me home.