what year did SBC Change bellhousing pattern?

[69_chevy]

What year did the standard SBC change over to a different bellhousing pattern? like 60's to when? i think its 1996 but not sure??? what is the last year a th350, or th400 or sm 465 will bolt to using standard bellhousings? Please let me know if anyone has any clue?

 

[ryan22re]

ummm

chevy has never changed the bellhousing pattern on the small block cept for maybe the real early ones like pre 1960.

even the new genn III/genIV engines use the same pattern (minus one bolt)

 

[69_chevy]

so even like a 2000 vortec engine is the same?

So i can bolt a early70's sm 465 or th400 to a 2000 vortec engine?

 

[ryan22re]

yep. cant put the bolt that goes in the 2 oclock postion though. can the rest. that is if its a gen III/genIV if its the old 350 vortec will bolt up no problem

 

[neverendingproject]

It will bolt up, but there might be a discreapancy with the flywheel though. IIRC the crank on the newer engines is in a different spot.

 

[neverendingproject]

Sorry. Different spot in or out, not up and down etc.

 

[ryan22re]

centerline to centerline is the same. distance from back of crank to transmission i have no idea.

guy on here has a 6.0 and 465 combo, so it cant be that hard.