Well I just had my tranny rebuilt with the vette servo, shift kit, and hi po clutches. I am running a 2500 stall converter. I woke up this morning and instead of breaking my neck like it usually does it shifts soft. I also notice a lowered idle, lots of vibration, and a weird pounding noise from my tranny. I checked fluid level and it is fine. I also checked my throttle brackets and they look fine. What would cause this sudden loss of shifting firmly? It feels as if its stalling later, and there isnt nearly as much line pressure, please help.

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Bright red 87 GTA with I have stock 3.27 gears,stock converter,B&M shift kit, TRW forged 9.75:1 pistons,comp cams pushrods, edelbrock valvesprings, 462 camel hump heads with 2.02in/1.60ex redrilled for angled plugs, 3 angle valve job, ported and polished, performer RPM intake, mallory fp regulator, edelbrock 750 CFM carb, hei ignition(new) with 10,000 volt coil,No cat, flowmaster 2 chamber mufflers, hedman full length headers, edelbrock cam with 488/501

 

Your torque converter could be going out. Does it rev up in-between gears a little? Before my old tranny went south, it would granny shift and rev up a few hundred rpm between gears. That is caused by the torque converter slipping. Check your fluid again and see if it looks brown instead of red. If its brown, then the TC is slipping and burning the fluid.

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1983 Firebird
TH700R4 Auto
Small Block 400
LG4 ECM, Intake, Carb, Distributor, etc.
Soon to be non-computer.
Clarion Head Unit 45X4
2 Pioneer 400W 12" Subs
Third Gen Performance
"A four cylinder is half an engine."

[This message has been edited by Ward (edited April 23, 2001).]