Can I use a 904 trans that was behind a 360 on my 225 slant? I realize the bolt pattern is different, but can the bellhousing be swapped from the trans in my car to make it fit? Forgive me if this is a stupid question, but I don't know transmissions too well.....yet

Thanks in advance,

Nat

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1970 four-door Dart, 225/A-904/2.45 gears. 0-60 in twenty three minutes!

nope, get a slanter $10 or so!

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'72 Duster 198 stock cam, 3:23's

93 D350 Cummins THD Maxfuel 35mpg parts to hit 400hp+ Suncoast Cat2 A518, converter DDP Stage III injectors 62/64 HX35, 3 piece manifold, 4" Diamond Eye, Gear Venders OD. Stage I street/tow PDD head on order.

No, the bellhousing is cast into the case so there are different cases to accommodate the different bellhousing bolt patterns. If the 904 from the 360 is not lock up then it's the heaviest duty 904 series transmission made known as the 999. They are desirable for this reason and most of the HD internals will fit the slant 6 904 case. I used guts from a 318's 904, known as the 998, for my slant six trans build. Heavier duty than the slant stuff, but not as heavy as the 999.

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Joshua

I was worried you were going to say that

Thanks,

Nat

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1970 four-door Dart, 225/A-904/2.45 gears. 0-60 in twenty three minutes!

Joshie225 is right. You have scored right there. You may want to hang on to that transmission for when you build your performance SL6, as a lot of the guts of the 999 will fit in the 904. The most obvious difference is the number of clutch plates and steels the drums will hold.

IIRC A-904 holds 3 and the A-999 holds 5.

bwhitejr

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'72 Duster (Performance 360)
'83 Ramcharger (Performance 318)
'80 TrailDuster (360)
'80 D-150 Truck (See Below)
CompCams 252S, Holley 390cfm, Offy manifold
Ported, Polished and Gasket Matched
P4286813 Springs,0.040 Overbore,
0.090 Shaved Head

What parts will swap between the two transmissions? Clutch drums, planetaries, valve bodies? Can anyone recommend a good overhaul kit?
Anyone know a good supplier of transmission repair/rebuild parts in or near Vancouver, B.C.?

Thanks,

Nat

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1970 four-door Dart, 225/A-904/2.45 gears. 0-60 in twenty three minutes!