Had to cut the input shaft

[orangecar]

Anyone have the same probllem that I did with the CK billet shaft drum? The small end of the input shaft was too long for the center hole in the billet drum. The GM shaft/drum that came out of the trans had a much deeper hole in it, had to cut the input shaft 3/32 to be able to get it to seat properly. Is this normal for billet drum/shaft installation.

 

[Boost231]

damn i would have called CK before i did any cutting to a billet shaft. these guys know what there doing and there is no reason it shouldnt fit out of the box

 

[Lee Thompson]

I had to do this also

Must be an older shaft because the last one I got was already shorter than stock. Just do some measuring with calipers. It is just for pilot.

 

[chris718]

The reason the shaft has to be cut is because of the extra material we leave in the drum to increase its strength.all of the new ones are now cut down so you dont have to do it.it is shown in the manual ,but not needed anymore

 

[mikestertwo]

Anyone have the same probllem that I did with the CK billet shaft drum? The small end of the input shaft was too long for the center hole in the billet drum. The GM shaft/drum that came out of the trans had a much deeper hole in it, had to cut the input shaft 3/32 to be able to get it to seat properly. Is this normal for billet drum/shaft installation.

That is normal. As Chris said, it's for strength. All the drum shafts are made that way even the ones from Bruce at PTS.

 

[WE4]

Great quote!

That is normal. As Chris said, it's for strength. All the drum shafts are made that way even the ones from Bruce at PTS.

Great quote!

Bruce
WE4
Performance Transmission Services

(P.S.) Ours are cut down to .515 on the pilot.

 

[chris718]

all of the shafts now are finished to the correct length,no cutting.the only purpose of not cutting is if you were using a stock drum.if youve got the shaft your probably using the drum.we are making these in house completely.we had a batch a while ago with the finished end .020" oversize.our machinest read the drawing wrong.anyhow i have them in stock,they are 279.00.finish heat treat is 42 rockwell and the profile of the shaft has been redesigned to eliminate stress risers that occur at the seal ring grooves and various fillets in the shafts design.