SM 420 2wd and 4wd version?

[tellmehow]

Hey guys! Anyone know if the SM420 off a 1966 2 wheel drive 3/4 ton truck will work for my 4x4 blazer? Some guy wants $100 for the trans with bellhousing & I'm not sure if this trans is what I need /forums/images/graemlins/confused.gif Thanks
Frank

 

[m j]

go price the required adapters

 

[tellmehow]

do you know what company makes the adaptors?

 

[m j]

Advance Adapters
Novak
the bottom line is that it isnt worth it when a $50 sm465 bolts up

 

[GMCLegacy]

also the ball stud that the H Bar for the clutch linkage was placed on the engine blocks back then, where as a 465's is on the bellhousing.

id like to have a SM420 for its shift pattern, but the no sych 1 and 2 is a downfall.

 

[u2slow]

[ QUOTE ]
also the ball stud that the H Bar for the clutch linkage was placed on the engine blocks back then, where as a 465's is on the bellhousing.

id like to have a SM420 for its shift pattern, but the no sych 1 and 2 is a downfall.

[/ QUOTE ]

Ballstud location is year specific. Split is 72/73.

SM420 is syncro 2nd... except when it's worn out. /forums/images/graemlins/grin.gif

EDIT: Only married t-case adapter is for the SM420 is a Rockwell T221. ('67 only)

 

[GMCLegacy]

hmmm, learn something new everyday.

so there are 465 bellhousings without a ball stud for the h-bar? is that an aluminum or cast iron bellhousing for those goofed up years?

 

[u2slow]

68-72 use block-mount ballstud and cast bellhousing with correct index for SM465.