Guys, trying to track down some transmission information, and I’m not even sure where to look. Maybe you can help.
My latest project is a ’68 350 convertible. It has it’s born with engine, but a PO swapped out the transmission years ago with a 70’s something TH350.
The (what I believe is original) electric kick down switch and bracket came in a box of parts with the car, as well as the original wire harness with the two wires for the switch.
The 70’s something transmission has cables for a kickdown, and they are just laying on top of the engine.
So here is my question:
How can I tell if my car came originally with a TH350 or a powerglide?
The PHS just says “automatic”, and nothing more.
People keep telling me that the ‘68-’69 TH350 did not come with an electric kickdown.
The shifter has an L, 2, D as if it were a 3 speed. (verses L and D for a powerglide). Looks original too.
So I’d like to put in whatever would be ‘correct’ for my car, but all I seem to find is a TH350 with cable kickdowns.
Any idea where to start? PHS has been worthless in this aspect.
My car is a July 1968 build, so VERY late in the model year if that matters.
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold
no th350 in '68 350 firebirds - 400 only (check the 1968 service manual)
correct trans is the st300, not powerglide.
shifter was swapped from a 400 car with th400
Beginning to think this is the correct answer... Maybe I will just get the Th350 rebuilt that came with the car. May be the best way to move forward at this point.
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold
No TH 350's in Firebirds until 1969. If you want to keep the 350 it's going to be a LOT easier to adapt a later cable (non-electric) kickdown to your carb. Aftermarket vendors like Lokar make custom fit ones.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI
yep, just pulled out my 2 speed "powerglide" in my 68 firebird and put in a turbo400 and realised I had the ST300 2 speed all along... only problem now is I have 3 forward gears but only 2 on the console - I presume one can get the correct Drive, Second and Low console part and just pop out the old 2 speed part and push in the 3 speed part
Go Here to SHIFTWORKS and that should get you everything you need to get the 3 forward gears workable for you. If you have any questions, call shiftworks, they are really nice and easy to deal with and will be able to answer your questions!