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Old 08-03-2004, 07:34 PM   #1
JohnyCash4x4
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Join Date: Aug 2004
Posts: 11
14 bolt gear ratio

Hello,
Recently bought a pieced together truck and am trying to find out what the gearing is on this beast.

The 14 bolt rear has RFZG3001 stamped on the axle tube. Is there any way to find out what the ratio was originally with this number. I have a very strong feeling it is the stock ratio for the chasis (either '76 or '79 K20).

I do know that it is the FF rear and the front is the D44 with a spool. I don't have a tach yet but the RPM's are up there travelling at highway speeds with the TH350 and 32" tires.

I'm about to build a new motor and install a new TQ converter but really need to know what I'm dealing with first.

If anyone could help it would be MUCH appreciated!
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Bill

'72 C10 body on '76 or '79 K20 chasis
355/TH350/NP205/D44 with spool/14-bolt FF
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