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  1. 64ValiantConv

    904 Valve Body

    That's an interesting comment, got me thinking. If you are talking about the 'inner seal', the smaller one that goes on the inner hub (2" or so diameter), the lip on that seal is supposed to be facing downward. I can't visualize how that seal could get rolled while installing the piston unless...
  2. 64ValiantConv

    904 Valve Body

    A couple of common problems I've read about are the low/reverse servo getting cocked in the bore (there's a problem solver super servo for $39 that fixes this), and cracked clutch apply pistons. Both problems are easy to overlook during a rebuild. I believe the low/reverse servo problem can...
  3. 64ValiantConv

    904 Valve Body

    During rebuild, when installing the 2-3 (or the 1-2) clutch apply piston, it's a bugger trying to get the piston into the cylinder, and very easy to maul or turn the lip on the seal. Bad seal = poor/slow clutch engagement. Just a thought.
  4. 64ValiantConv

    904 Valve Body

    I'm no expert but this could have many other causes than the valve body. A bad seal on the 2-3 clutch apply piston? Worn clutch plates? Worn band? Weak 2-3 solenoid? Me thinks you'll have to tear it down to find out. You seem to have all but eliminated the valve body as the source of the...
  5. 64ValiantConv

    741,742,489 ??????????

    I like to tell all the phord 9" guys that Mopar made 3 different 8 3/4 rears yada yada yada, and the smallest/weakest 741 has a pinion width larger than theirs (1.375" vs 1.313"). I'm no expert, but I've never even seen a broken 741.
  6. 64ValiantConv

    Where to purchase a A-500 / A-518

    http://www.transmissioncenter.net/dodge.htm
  7. 64ValiantConv

    904 vs. 42RH - Pictures

    I think the '2' rating has more to do with the total clutch surface in the tranny than it has to do with the hard parts. The OD clutch, OD Direct Clutch, and Direct Clutch are all upgradeable to more clutch discs, giving it the ability to handle much more torque. I've not been able to find the...
  8. 64ValiantConv

    What gears do I get?

    With your 2.45/1 1st gear, I'd consider upgrading to a 42RH overdrive tranny that has a 2.74/1 1st gear and a .69/1 overdrive. Then I'd use 3.55's in the rear, which would be like a 3.89 with your current 2.45/1 1st gear. you'd get good takeoff and great cruising characteristics and mileage...
  9. 64ValiantConv

    Where to get a front pump for a 42RH (A500)

    The early pumps had a whine, so they increased the size of the take up ports in 1995. But the valve body port had to match the bigger pump port, so both the pump and the valve body changed. There are also two different oil pump gear types, the older slotted drive, and the newer flat slot...
  10. 64ValiantConv

    Help me build my a500.

    I'm building a a500/42rh for my 66 Barracuda. You'll know if you have a 42rh if the female connector by the shift selector is a 3 pin. If it's a 42re it will be a big round connector with about 8 pins. The 42rh can handle 300hp very well. If I were you, I'd put a rebuild kit in it with alto...
  11. 64ValiantConv

    Rear end identification...

    Yeah, I always get a kick out of folks downing the smaller pinion 741. It helps keep the 741 affordable. The smallest 'weakest' 8 3/4 pinion at 1 3/8 (1.375") is bigger than the Ford 9" pinion at 1.313".
  12. 64ValiantConv

    What is the difference between a 42RH and 44RH

    Does anyone know the difference? I've searched high and low...
  13. 64ValiantConv

    Homemade Clutch Spring Comparessor

    I use a shop press, with a large block on top of the PVC that engages the entire circumference of it for stability.
  14. 64ValiantConv

    Homemade Clutch Spring Comparessor

    I probably not going to rebuild a whole lot of a500's or a518's in my lifetime, so I find it hard to spend $100-$150 on an overdrive clutch spring compressor or the direct clutch spring compressor for a500 rebuild. I took some measurements and headed down to Home Depot, where I found a couple...
  15. 64ValiantConv

    automatic trans floor shifters

    Had a B&M for a while, hated it. Switched to a Hurst Quarter Stick and love it.
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