Thread: 478 to SM420
View Single Post
  #1  
Old March 9th, 2017, 04:11 AM
arepoff arepoff is offline
Member
 
Join Date: Feb 2016
Location: Walla Walla WA
Truck: 1965 K1000
Posts: 55
Rep Power: 64
arepoff is on a distinguished road
Default 478 to SM420

I know, this has been gone over before but I can't find the answers I am looking for in the archives. I am thinking about replacing my 305E with a 478M in my 65 K1000.

1) To adapt the sm420 to the 478 I need either the 379 flywheel (rare) or have a custom flywheel made.

2) Does the sm420 bell housing bolt directly to the 478 SAE housing?

3) If the same exterior accessories and single row timing chain is used on the 478 it should weigh about the same as the 305.

Please let me know if I am correct. My grandfather bought this new and I inherited the truck, now that I am getting ready to restore it I would like to have more power but keep the V6 engine. I also plan to install an HEI distributor and a FiTech fuel injection once I modify the M intake manifold.

Thank you in advance for your advice.

Alexi
Reply With Quote