4 speed identification
I thought I'd jump into this thread.
I'm swapping a 273 into a '64 Dart GT which currently has a /6 and auto trans. I'm having problems with terminology and don't see an exact parallel to what I have and what I want to do. If it's there, I don't know enough to recognize it. Sorry.
Stuff I currently have:
273 motor w/o flywheel/clutch, clutch fork, or throwout bearing.
Cast iron 833. It looks like a short housing and PO says it was from a car. Date code says it's from 12/4/'75. Numbers are 6B143802 (top) and PP833 5242 (bottom).
Bell housing. Cast number 3743859 (top) and 05505 1 (middle), and 76? followed by some sort of dot code in boxes - 2, 3, 3, 3, 1
Hurst shifter and shift rods
Linkage plate
Clutch "down rod"?
Pedal assembly
Stock 7.25" pumpkin
I've read the Brewer's Performance ID sheet and it has the interlock-style inspection plate. See the pics below.
Bad things I see:
- Threads on the rearward shifter rod are stripped. The front one doesn't look top notch, either.
- Two half-broken teeth on the gear in the middle. No others seen.
- Some corrosion on gear teeth.
- Looks like a broken shaft part behind inspection plate cover
- Looks like the U-shaped fork tip is broken.
A bunch of questions:
1). Does this trans have a slip-yoke driveline?
2). Will the bell housing bolt up to the '66 273 and trans?
3). Will I have to do a hump replacement for the shifter? Will I have to replace the frame cross member or will the /6 version work?
4). Is the trans a 3-speed w/OD or a 4-speed, or are they the same thing? Gears progress from smallest to largest, front to back.
5). The two fork-like pieces were loose in the case. Am I missing some pieces?
6). Two of the inspection plate bolts did not have collars below the head. Correct or not?
7). Will the front of the main shaft fit with the 273?
:cool:. If it's stock, what are the gear ratios?
9). Is this thing a boat anchor or worth the effort/cost to put it proper? I got it for about $200.
I'm sure I need a rebuild - no history supplied and broken teeth. Synchros appear to be OK. I don't know about gaskets and seals.
Thanks for your response. GR
You probably should have started your own thread, but here goes.
The shifter appears to be an original 64 65 Hurst Competition plus 4 speed shifter and will work nicely with a 4 speed or 4 speed O/D(Chrysler just swapped 3rd gear for the 4th O/D gear. You can typically use your Hurst 4 speed shifter and linkage by turning the 3-4 shift lever down instead of up. The 4 speed section has pictures of both 4 speed and 4 speed O/D linkage by a FABO member.
The bell housing is for SMALL BLOCK 10.5" BELLHOUSING, 75-80 A/F-BODY/1976-80.
Use the 10.5 flywheel, clutch and pressure plate. You need special parts to adapt it to the early, 64-66 Dart. The 273 will easily overpower the original 9 1/2 inch clutch and pressure plate. Brewers Performance and Passon Performance have these parts.
You will need the 4 speed hump from and early 64-66 Dart, Valiant, or Barracuda. Someone is selling one in the classified section now,
http://www.forabodiesonly.com/mopar/showthread.php?t=330796 . You will also need the clutch and brake pedal assy for the same cars.
The K frame is the same for /6 and 273 cars. Only the motor mount brackets change.
Check the rear of the crankshaft to see if you can install the pilot bearing. If not, search for alternatives or have the crank drilled for the pilot bushing.
The cast iron O/D main case is a plus, but I would not give much for that transmission. I'd look at the other O/D trans. Maybe swap internals into the cast iron case if you feel up to it. Check everything twice from cast iron O/D transmission. It is a slip yoke Trans, but the output shaft can be large, 30 spline, or small, 26 spline. of course bigger is better but both are good.
