|
09-01-2025, 01:32 PM
|
#1 |
|
Registered User
 Join Date: Dec 2016
Location: Snohomish washington
Posts: 76
|
396 swap
Does anyone have pictures of motor mounts and front cross member on a 72 k20 I’m thinking of pulling out my 396 and installing a 454 .I had this 396 in another 72k20 I had a different cross member.when installing in this truck I had to shave 1/2” off the cross member to get the crank pulley.I don’t think the 454 pulley will clear.
|
|
|
|
09-04-2025, 01:57 PM
|
#2 |
|
Senior Member
Join Date: Mar 2022
Location: Twin Cites, MN
Posts: 361
|
Re: 396 swap
The 396 and 454 pulleys are the same and fully interchangeable. If you have a special size on the 396, the 3 bolt holes in the balancer should be in the same place and you could move the 396 pulley over.
|
|
|
|
|
09-04-2025, 03:06 PM
|
#3 |
|
Registered User
Join Date: Feb 2015
Location: El Segundo, CA
Posts: 22
|
Re: 396 swap
The mounts on BBC blocks are all the same. But you can move the mounts on the frame forward and back quite a bit to make it fit right.
Be aware that with a complete truck, that affects everything from header clearance to driveshaft length(s). |
|
|
|
 |
| Bookmarks |
|
|
Linear Mode
