07-08-2006, 12:10 AM
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| Senior Member
Join Date: Oct 2005 Location: Dyer, In
Posts: 293
Car: 91 Camaro RS Engine: 355 Vortec Transmission: 700r4 Axle/Gears: 3.42 | 700r4 Slow Shift at WOT
First of all let me say this is new territory for me.
I recently replace the 305 tbi engine in my 91rs with a 355 vortec set up for about 375hp and near 400ft lb torque. The 700r4 in the car had a recent rebuild by a local shop just before I got the car (500 miles ago). I do not know exactly what was done to the trans.
The problem is the trans shifts fine at part throttle but the 1-2 shift at WOT is very slow. also the 2-1 downshift is very slow at WOT. I have not yet done a 2-3 or 3-4 shift at WOT.
I would like to firm up the shift at WOT because I know the way it is currently shifting it will destroy itself. However, I do not wish to have bang shifts at part throttle. I have done much searching to determine what to do with this trans and I am very confused. My fear is if I install a full shift kit that the bang shifts will destroy drivetrain parts with the engine I have installed. I would prefer to simply find a way to firm up the WOT shift without putting excessive strain on the drivetrain.
Would a corvette servo or billet servo help? How about a larger diameter TV boost valve?
Any recommendations on specific parts to order to firm up the WOT shifts would be welcome. | | |
__________________ 1991 Camaro RS [click for pictures]
Comp XR269HR-12 cam, GM Intake 12496820
454 TBI, Vortec Heads
Hypereutectic Pistons 10.3:1
Crane 10309-1 Valve Springs/Retainers
Pacesetter Ceramic Coated headers
CGS Subframe Connectors, Jegster Rollbar |
 
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