I am putting a 460 in my '67 250 (swapping from an FE). Is the pattern the same on the 351M-400 as the 460? Could I just use the slip yoke on the 385 series without changing the length of the driveshaft? There are alot of late 70's trucks out there with 351M-400's.

 

[updated:LAST EDITED ON 20-Jun-02 AT 09:09 AM (EST)]Yes, the bellhousing bolt pattern is an exact match between for all non FE big blocks. 351m-400-370-429-460 all share the same bolt pattern. And, the C6 is adaptable from 2wd to 4wd by removing the tailshaft from the 2wd version and bolting on the factory transfer case adapter/spacer. Be sure to know what vehicle the C6 originally came out of, there a couple of different starter options throughout the years. Yes as well to your slip yoke question, as all C6's SB, BB, and FE's are the exact same length; 33 1/2 inches from end to end.