Transmissions and Drivetrain Need help with your trans? Problems with your axle?

cant downshift into 3rd

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Old 01-23-2007, 03:14 AM
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Car: 1986 camaro z28
Engine: 350sbc
Transmission: TKO 600
Axle/Gears: stock axle with 4.11's
cant downshift into 3rd

if im in 4th i cant downshift into third inless i hold clutch in slip to second then to third then left off the clutch...ive tryed giving it more gas didnt work i tryed downshifting at lower rpm didnt work...its like theres a block there in way no matter what it wont downshift into third any ideas whats wrong and how to fix it???
Old 01-23-2007, 10:05 AM
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Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
it doesn't grind at all does it?
I have a similiar problem going into 5th gear sometimes.
Old 01-23-2007, 04:16 PM
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Car: 1986 camaro z28
Engine: 350sbc
Transmission: TKO 600
Axle/Gears: stock axle with 4.11's
no grinding....its like there is a metal block that goes infront of the area for thrid once i shift into 4th...car drives fine its just annoying not being able to downshift directly into 3rd gear...
Old 06-21-2007, 03:19 AM
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Car: 1986 camaro z28
Engine: 350sbc
Transmission: TKO 600
Axle/Gears: stock axle with 4.11's
Re: cant downshift into 3rd

i just changed shifters today to a brand new pro 5.0 shifter and still having the same problem...anybody know whats wrong...
Old 06-23-2007, 07:58 AM
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Car: 1991 Camaro RS
Engine: L03 305 V-8 (for now ;) )
Transmission: T-5 5 speed
Axle/Gears: stock... whatever that means :)
Re: cant downshift into 3rd

Synchronizers probably.
Old 05-23-2010, 02:36 PM
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Car: 1990 Firebird
Engine: 305 TBI
Transmission: F5
Axle/Gears: 88 GTA 9 bolt rear axle
Re: cant downshift into 3rd

I know this is really old and have done some searching and haven't found a solution. I too have the same exact problem, it's annoying as hell. Have you figured out what the problem is/was?

I am taking my car into the shop Wednesday to have a new throwout bearing, pressure plate, flywheel, and clutch put in, I'll see if the problem goes away after this.
Old 05-23-2010, 04:49 PM
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Car: 1992 Camaro RS
Engine: Rebuilt 350 going in after paint
Transmission: WCT5, 7k & counting behind the 350
Axle/Gears: 4thgen disc rear w/ 3.73 Posi
Re: cant downshift into 3rd

Most likely it is a synchro issue as mentioned. There is another possibility though. I'm assuming the shifter mechanism is the same as on a T5 and has a small block of metal that the shifter shaft fits into. This block of metal is attached to the rod that moves the shift forks back and forth to change gears. On a T5, that block of metal has a small nub on the bottom that slides through grooves in the bottom of the tailshaft housing to give you the "path" for the shifter to follow when you are changing gears and the "stops" when you're in gear. If those grooves are messed up it can make it hard or impossible to go from one gear to the next like you are experiencing. I only mention this cause I messed up the grooves in my T5's tailshaft housing and now I sometimes have the exact same problem going from 5th to 4th. I go to 3rd and it drops smoothly into 4th. The synchros in my T5 are fine, the whole thing was just rebuilt in '09 and only has 3K miles on it so I know they aren't the problem in my case.
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