Shift kit and Torque Converter
Thread Starter
Threadkiller
Joined: Jan 2002
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From: Long Island, NY
Cruise-In 9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09
Shift kit and Torque Converter
This is gonna sound really dumb, but please bear with me.
I know what a shift kit and torque converter are, but what exactly do they do? When my dad had a new tranny put in my 84, he had a shift kit put in and a 3000 stall torque converter put in, what are the point of them?
And try to be nice and not flame me or something.
I know what a shift kit and torque converter are, but what exactly do they do? When my dad had a new tranny put in my 84, he had a shift kit put in and a 3000 stall torque converter put in, what are the point of them?
And try to be nice and not flame me or something.
Instructor
Joined: Mar 2000
Posts: 143
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From: Strongsville, OH
Re: Shift kit and Torque Converter (vizkiz)
The TC is a fluid coupler between the motor and the trans. Stall speed is relative depending upon the torque output of any given motor. As a rule of thumb, choose a stall speed that is 500 rpm less than where your motor makes its max rpm...
A shift kit, among other things modifies the servo, valves inside the valve body and accumulators allowing increased pressure and therefore making shifts faster/harder. On the 4L60E tranny, you can actually "dial in" the firmness of the shifts with the number of washers installed in the 1-2 accumulator. - It's not something that you would want to do twice, so choose wisely the first time. 1 washer = firmer than stock. 2 washers = nice 1-2 chirp and an occational 2-3 chirp. 3 washers = heavy 1-2 chirp and consistant 2-3 chirp at anything over 1/2 throttle.
-Chip
A shift kit, among other things modifies the servo, valves inside the valve body and accumulators allowing increased pressure and therefore making shifts faster/harder. On the 4L60E tranny, you can actually "dial in" the firmness of the shifts with the number of washers installed in the 1-2 accumulator. - It's not something that you would want to do twice, so choose wisely the first time. 1 washer = firmer than stock. 2 washers = nice 1-2 chirp and an occational 2-3 chirp. 3 washers = heavy 1-2 chirp and consistant 2-3 chirp at anything over 1/2 throttle.
-Chip
Safety Car
Joined: Aug 2002
Posts: 4,812
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From: New Albany IN
St. Jude Donor '03-'04-'06-'08-'09
Re: Shift kit and Torque Converter (Admiral)
:iagree: Good description! Don't worry about sounding dumb....most of started out dumb until we came to the forum....well, some of us , like me, still sound dumb... :lol:
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
:iagree:
I tend to think of the TC as a clutch in an automatic. Once it locks up, it sends all the power of the motor thru the driveline. The closer your TC lockup point is to your torque peak, the harder and quicker your car will take off at the line.
I tend to think of the TC as a clutch in an automatic. Once it locks up, it sends all the power of the motor thru the driveline. The closer your TC lockup point is to your torque peak, the harder and quicker your car will take off at the line.
