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-   -   700R4 Corvette Servo question, (pin question) (

Guntar13 11-08-2011 11:09 AM

700R4 Corvette Servo question, (pin question)
I am getting ready to mount the tranny back up and before i do i wonder if i should install a corvette servo and 4th apply piston. My real question, being how i have read countless benefits of this, is whether i would need the longer pin? There are very moderately priced kits that have the 2nd servo and new pin, but I wonder if it is really necessary to replace the pin since I will be putting the 4th apply servo on also. Thanks for the info! :D

B@D 11-08-2011 03:28 PM

What type of vehicle are we talking about first of all , are you wanting a firmer shift ?

As for the pin most of the time you can get away with using the same pin and some times you have to grind the tip just a little to achieve proper band clearance.
Putting in the vette servo will not change band clearance but changing to an after market 4th servo cover,piston can change band clearance.

1/16 - 1/8 '' is ideal band clearance in most 700r4's , here is how you can check it >>>

Before you remove the original servo cover either mount the trans in a fixture or simply place it against the wall so you can push on the servo cover to see how far it moves inward away from retaining clip because that is your band clearance > that is where you don't want more than 1/8 " , no less than 1/16 " clearance .

After you replace the servo with the ones you choose be sure to check the clearance again , adjust if necessary then .

Guntar13 11-08-2011 03:37 PM

A day late and a dollar short! I put the trans back In today! ( wild hair up my ***!). It is a 91 Chevy truck 2wd, lots of motor mods done so lookin to "sharpen" things up a bit. Thanks for the info, I assume with the trans in the car it's the same rule of thumb as far as clearances go? Thanks!

SSedan64 11-10-2011 12:05 AM

Yes, same method & spec, if you have room to check it installed in the Truck.

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