'65 Dart /6 A833 swap - clutch fork, input shaft, speedo gear, crossmember questions

-
C

CMKirk

Member
Joined
Nov 4, 2024
Messages
16
Reaction score
14
Location
Monroe, CT
Hello!

Getting ready to start an A833 OD swap into my '65 Dart 2dr /6. Ive compared the A833 to a spare 3spd tranny and bellhousing I have, and I have a few questions.

The input shaft (from the end of the bearing retainer to the end of the shaft) on the A833 is .200 shorter than the stock 3spd (see pics) All other dimensions match. Will the slightly shorter shaft create any problems?

The clutch fork for the stock 3spd uses a tab type pivot mount, while the A833 clutch fork uses a ball type pivot mount. Can I assume that I'll have to get a ball mounted clutch fork? If yes, anyone out there have one or know where to get one?

The tranny is from a '76 Volare. Is the speedometer cable mount/input the same as the Dart?

Is there a resource to figure out which speedometer gear I'll need in order to get a somewhat accurate speedometer reading?

Will I have to redrill holes in the crossmember, or fabricate a new crossmember?


Thanks...

20241229_135453_resized.jpg


20241229_134609_resized.jpg


20241229_134535_resized.jpg


20241229_134326_resized.jpg


20241229_134312_resized.jpg
 
CMKirk said:
Hello!

Getting ready to start an A833 OD swap into my '65 Dart 2dr /6. Ive compared the A833 to a spare 3spd tranny and bellhousing I have, and I have a few questions.

The input shaft (from the end of the bearing retainer to the end of the shaft) on the A833 is .200 shorter than the stock 3spd (see pics) All other dimensions match. Will the slightly shorter shaft create any problems?

The clutch fork for the stock 3spd uses a tab type pivot mount, while the A833 clutch fork uses a ball type pivot mount. Can I assume that I'll have to get a ball mounted clutch fork? If yes, anyone out there have one or know where to get one?

The tranny is from a '76 Volare. Is the speedometer cable mount/input the same as the Dart?

Is there a resource to figure out which speedometer gear I'll need in order to get a somewhat accurate speedometer reading?

Will I have to redrill holes in the crossmember, or fabricate a new crossmember?


Thanks...

View attachment 1716345573

View attachment 1716345574

View attachment 1716345575

View attachment 1716345576

View attachment 1716345577
Click to expand...
I'm in the middle of a similar project. Mine is a swap over from a 904 to an A833, however my 833 is out of a 65 A body. The big dilemma for me was getting the right bellhousing. #2468433. I tried to adapt an aluminum bellhousing, but "no-way-Jose'" way too much needed modification. My application uses the same fork as the three speed and the input shaft of the 833 poses no problems. I'm waiting now for some new pressure plate bolts I ordered to install my Zoom scalloped, 10" clutch. 1965 Barracuda tricked out 225 /6.
Norm
 
circlepilot said:
I'm in the middle of a similar project. Mine is a swap over from a 904 to an A833, however my 833 is out of a 65 A body. The big dilemma for me was getting the right bellhousing. #2468433. I tried to adapt an aluminum bellhousing, but "no-way-Jose'" way too much needed modification. My application uses the same fork as the three speed and the input shaft of the 833 poses no problems. I'm waiting now for some new pressure plate bolts I ordered to install my Zoom scalloped, 10" clutch. 1965 Barracuda tricked out 225 /6.
Norm
Click to expand...
Norm - Thankfully I was able to get the correct bellhousing. The A833 OD takes a specific bellhousing that has a larger opening for the bearing retainer. My biggest question right now is the clutch fork...2 totally different styles.
 
the speedo gear, housing, attachment clip and cable are all different than the 65 stuff. everything changed in 67

check with brewers on the clutch fork or throw up a wanted ad here in the classifieds.

brewers also has a speedo chart on the site that tell you what ya need based on tire height and rear end ratio.

www.brewersperformance.com

Speedometer Gear Ratios - Mopar A833 4-Speed Transmission & Component Specialists

www.brewersperformance.com www.brewersperformance.com
 
CMKirk said:
Hello!

Getting ready to start an A833 OD swap into my '65 Dart 2dr /6. Ive compared the A833 to a spare 3spd tranny and bellhousing I have, and I have a few questions.

The input shaft (from the end of the bearing retainer to the end of the shaft) on the A833 is .200 shorter than the stock 3spd (see pics) All other dimensions match. Will the slightly shorter shaft create any problems?

The clutch fork for the stock 3spd uses a tab type pivot mount, while the A833 clutch fork uses a ball type pivot mount. Can I assume that I'll have to get a ball mounted clutch fork? If yes, anyone out there have one or know where to get one?

The tranny is from a '76 Volare. Is the speedometer cable mount/input the same as the Dart?

Is there a resource to figure out which speedometer gear I'll need in order to get a somewhat accurate speedometer reading?

Will I have to redrill holes in the crossmember, or fabricate a new crossmember?
Click to expand...
In order:
Input shaft is no problem, as long as your engine was previously a stick. Some (automatic) crankshafts did not come finish machined for a pilot bearing.
Contact Brewer's Performance for the clutch fork. Also a wealth of knowledge on all things "four speed" and clutch.
No. The later trans uses a different style speedo gear and housing. You'll need a '66-'67 cable to connect the new trans to your speedometer.
Go to Mymopar.com and download the Aspen or Volare FSM and they will have a chart regarding speedo gear selection based on rear gear ratio and tire size. Many online charts are notoriously inaccurate.
No crossmember modification is needed, but you will have to modify your transmission tunnel if your car was not previously a floor shift.
Additionally, '65 transmissions/driveshafts used a "ball and trunnion" front joint, whereas your OD transmission uses a slip yoke; so you will need a different driveshaft made or modified for the new transmission.
 
65DartDD1 said:
Measure the diameter of the input shaft. I recall 65 uses a smaller pilot bushing.
Click to expand...
Nope, not on a manual trans setup. The automatic converter hole was smaller in '67 and earlier slant's and 273's, but, not a manual pilot bushing for a manual trans crank. If you have an automatic crank that hasn't been machined for a bushing, there are conversion bearings out there that can be used. They fit in the converter hole instead of the pilot bushing hole.
 
You're in for some conversion mods of some sort. The OD trans has a large diameter front bearing retainer. That means it needs a bell housing with a corresponding large hole. The '65 bell housings all have a small hole, so, if you're going to use the OD slant 6 bell housing, you will have to rig up the clutch release linkage parts to fit the car. That wil require a custom bracket for the Z-bar pivot ball on the bell housing to line up with the stock one on the frame rail. Your original flywheel and clutch assembly should work ok, just match the release fork with the bell housing (and it's mounting design) you're going to use. There are other methods to skin this cat, but, I found this one to be the easiest.
 
cudamark said:
You're in for some conversion mods of some sort. The OD trans has a large diameter front bearing retainer. That means it needs a bell housing with a corresponding large hole. The '65 bell housings all have a small hole, so, if you're going to use the OD slant 6 bell housing, you will have to rig up the clutch release linkage parts to fit the car. That wil require a custom bracket for the Z-bar pivot ball on the bell housing to line up with the stock one on the frame rail. Your original flywheel and clutch assembly should work ok, just match the release fork with the bell housing (and it's mounting design) you're going to use. There are other methods to skin this cat, but, I found this one to be the easiest.
Click to expand...
And that's a fact! "Been there doing that and buying the T-shirt."
 
cudamark said:
You're in for some conversion mods of some sort. The OD trans has a large diameter front bearing retainer. That means it needs a bell housing with a corresponding large hole. The '65 bell housings all have a small hole, so, if you're going to use the OD slant 6 bell housing, you will have to rig up the clutch release linkage parts to fit the car. That wil require a custom bracket for the Z-bar pivot ball on the bell housing to line up with the stock one on the frame rail. Your original flywheel and clutch assembly should work ok, just match the release fork with the bell housing (and it's mounting design) you're going to use. There are other methods to skin this cat, but, I found this one to be the easiest.
Click to expand...
I have the correct large hole bellhousing for the transmission, but I will need a new clutch fork because the OD bellhousing has a ball pivot. Hopefully the rest of the linkage will line up. If not, I'm capable of fabricating whatever parts I might need.
 
You must log in or register to reply here.
-

Back
Top