Reverse shift problem
I am SURE there are questions for which I won't have the answers, but..'ya never know until you ask!
Subject: '73 340 Duster with a '69 drive train, 4sp
The '69 motor/trans came out of a '69 340 Dart. The transmission was a hemi model with the large(r) main shaft.
Having banged on that tranny for several years of bracket racing, it developed some problems that I chose at the time NOT to fix, but to just swap in a different 4sp. The current trans has a smaller main shaft. It took a different prop-shaft. Sorry...don't recall the spline count/U-joint size and all.
The problem is the car's orginal Hurst Comp shifter has a problem shifing into reverse on the 'new' transmission. There isn't enough throw. It does engage when shifted into reverse..but barely. Remove the shift rod when the shifter is in reverse and the trans lever will move farther rearward a good bit.
An obvious question is, 'which linkage did you use with the 'new' trans? The hemi-sytle or the 'new' style?'
Good question. Sorry...but I don't recall THAT for sure, either. I think I kept the '69 shift rods on the 'new' (smaller) trans. I don't know that matters..but there's a lot of geometry going on with lever lengths, rod bends and such.
Oh...the OEM Hurst Comp shifter does not have shift stops. I don't think a shifter WITH shift stops has a stop for reverse anyway...but adjusting a stop isn't an option.
Maybe someone has done this tranny swap with a 4sp and KNOWS what's going on..in which case, I'd be happy to hear about it.
Thanks!
I am SURE there are questions for which I won't have the answers, but..'ya never know until you ask!
Subject: '73 340 Duster with a '69 drive train, 4sp
The '69 motor/trans came out of a '69 340 Dart. The transmission was a hemi model with the large(r) main shaft.
Having banged on that tranny for several years of bracket racing, it developed some problems that I chose at the time NOT to fix, but to just swap in a different 4sp. The current trans has a smaller main shaft. It took a different prop-shaft. Sorry...don't recall the spline count/U-joint size and all.
The problem is the car's orginal Hurst Comp shifter has a problem shifing into reverse on the 'new' transmission. There isn't enough throw. It does engage when shifted into reverse..but barely. Remove the shift rod when the shifter is in reverse and the trans lever will move farther rearward a good bit.
An obvious question is, 'which linkage did you use with the 'new' trans? The hemi-sytle or the 'new' style?'
Good question. Sorry...but I don't recall THAT for sure, either. I think I kept the '69 shift rods on the 'new' (smaller) trans. I don't know that matters..but there's a lot of geometry going on with lever lengths, rod bends and such.
Oh...the OEM Hurst Comp shifter does not have shift stops. I don't think a shifter WITH shift stops has a stop for reverse anyway...but adjusting a stop isn't an option.
Maybe someone has done this tranny swap with a 4sp and KNOWS what's going on..in which case, I'd be happy to hear about it.
Thanks!
