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  1. Clelan

    Can anyone identify this suregrip?

    I found this for sale locally. Advertised as a sure grip for a Dana 60 31 spline. Was going to use it for a late 70s 3/4 ton Dodge Dana 60. Seller says it had 4.10 gears on it so the case should be correct that way. Any ideas? Cley
  2. Clelan

    Effect of more power on Torque Convertor.

    74 Plymouth Duster Full street weight (I guess I should actually weigh it but it's heavy) 360/A-500/8.75 with 4.10sg/275-60-15 Drag radials Torque convertor currently flashes to 2600 on take off. It is a modified stock lock up convertor. If I drastically increase power output of the motor (say...
  3. Clelan

    Leak between motor and bell housing.

    74 Duster, 360, A-500, 8.75 rear. My car was working well after the transmission rebuild but I am not one to leave well enough alone. I added a higher stall convertor and 4.10 gears for better track times. I only maybe drove it 100 miles since the convertor change and it started leaking like...
  4. Clelan

    I need an 8 3/4 lesson. Better late than never!

    So for my spring upgrades I installed an 8 3/4 diff in my 74 Duster. It has a 360, an A-500 OD auto trans and my 8 3/4. I put it together with an original housing that I got sand blasted and powder coated, new Dr Diff large bolt pattern axles with non adjustable bearings, 10x2.5" drum brakes and...
  5. Clelan

    Vibration over 40 mph.

    The patient: 74 Duster 360/A-500 (fresh rebuild)/8 1/4 TCI flex plate Neutral balance stock truck convertor. Slip yoke from a C body 727 New driveshaft built by a reputable shop 53.5" (high speed balanced) 1310 to 7260 conversion u joints. The problem: Vibration over 40 mph. Regardless of OD...
  6. Clelan

    Inertia Yoke, Good or Bad?

    I put out an ad on a local Facebook parts group looking for a 727 yoke because I am swapping to an A-500 trans in my 74 Duster this spring. A guy came back to me that he had one for free if I took the driveshaft from a 68 C body with it. Of course I did! When I picked it up, I noticed this heavy...
  7. Clelan

    A-500 transmission OD and LU controls.

    I have seen a few good ways to control the overdrive and lock up on the A-500/42RH transmissions when swapped into older cars, and I hope I learned a bit from all of them while coming up with my own plan. So here it is. What do you think? Forgive me for the schematic diagram, but that is the...
  8. Clelan

    Ultimate A-500

    So I bought an A-500 overdrive transmission for my Duster yesterday. When I rebuild it, what do I need to upgrade to make it happy behind a 400hp 360 in a 3300lb Duster. Currently has 3.23 gears but will likely switch to 3.91 or 4.10 after the OD goes in. Cley
  9. Clelan

    Clunk noise on the 1/2 shift in an A999 trans.

    74 Duster, 360/904/8 ¼” 3.23 SG My transmission in my 74 Duster decided to stop shifting into second gear so I found a junk yard A999 from an 88 Dodge truck to keep me going till I get a chance to rebuild the 904 this winter. I purchased the TCI balanced flex plate since the Junk Yard...
  10. Clelan

    Lokar kick down cable mod to raise shift points!

    On my 74 Duster with a 360, 904 and 3.23 gears I installed a Lokar throttle cable and kick down cable. It worked ok but my shift points were way too low when I adjusted the kick down to allow wide open throttle. I decided to install a spring to pull the cable sooner and still allow WOT. See the...
  11. Clelan

    Weird axle housing width.

    A couple years ago I bought an 8 3/4 housing from a local guy who told me it was an a body width housing. Well I stuck it in the corner and just brought it out today to clean it up for paint so I could start putting it all together. I threw a tape measure on it and it measures 55 and 3/8 flange...
  12. Clelan

    OD auto question

    Forgive me if this has been asked before, but, Will an A-518 OD auto last in my 74 360 Duster. I want 4.10 gears and an OD auto. How much power will it handle?
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