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cdat · 03-03-2013, 05:48 PM

In the 91 I've got a toggle switch on a console to the left and I believe the Allison is a 470.
will/can the air switch/toggle be used to downshift and hold the trans in a lower gear?
is it possible to change to a shift pad like the newer ones, is there a good reason to, like more reliable?
what is the best way to test the jake brake in order to insure it works, preferably prior to finding out the hard way?

03-03-2013, 05:48 PM	#1
cdat Senior Member Join Date: Dec 2012 Location: Idaho Posts: 236	Air shift toggle In the 91 I've got a toggle switch on a console to the left and I believe the Allison is a 470. will/can the air switch/toggle be used to downshift and hold the trans in a lower gear? is it possible to change to a shift pad like the newer ones, is there a good reason to, like more reliable? what is the best way to test the jake brake in order to insure it works, preferably prior to finding out the hard way? __________________ John and Patti Julie and Gracie (Our papillons) 91 Newell #255