Blocks, Pistons and Posi

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turbo6randy

Member
Joined
May 25, 2001
Messages
373
Standard bore 109 block. Will need to be bored. $350.
109 block bored .030 $250.
.030 pistons stock appearing with stock rods. $60. plus $20. shipping. These were bought from a board member and did'nt come from the block I have for sale.
Stock 30 spline 8.5 posi carrier removed from Buick Roadmaster. $125. plus $20. shipping.
 
do you have pics? or do you have the other block as well? maybe the other i could save a step
 
Have two standard bore blocks and the .030 over also.
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The .030 block was in a turbo car. The other block I drilled and tapped the oil return. The silver block does not have the return hole as you can see in the picture.
 
Standard bore 109 block. Will need to be bored. $350.
109 block bored .030 $250.
.030 pistons stock appearing with stock rods. $60. plus $20. shipping. These were bought from a board member and did'nt come from the block I have for sale.
Stock 30 spline 8.5 posi carrier removed from Buick Roadmaster. $125. plus $20. shipping.
Interested in the posi. What is the GM part # on the posi? Gear ratio known? Condition?
 
Unknown condition. I pulled it from a junk car. The only numbers that I see are 31C4J . Sorry don't know gear ratio either. If you need more numbers you'll have to tell me where to find them.
 
Unknown condition. I pulled it from a junk car. The only numbers that I see are 31C4J . Sorry don't know gear ratio either. If you need more numbers you'll have to tell me where to find them.

Should be some numbers stamped on the beveled edge of the ring gear. Two sets of two digits stamped. Divide them together to get a ratio. Is this a gov lock or clutch unit? Pix? In the housing there could be cast numbers that end in 08 or 09.
 
Here's a picture. Don't see the numbers and havn't got the ring gear. It is a clutch unit.
 

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