396 big block
The exhaust is different, and you will probably need a bigger radiator.
Try nada.com
you can have anything from the 6 cyl. up to the 396 v8 in the 68 nova.
I don't know that area, but, your local Chevy dealer, parts store, or, go online to Summit, or Jeg's.
Worth the Fighting For has 396 pages.
.035
396 g = 0.873 pounds
From 1970 through the 2011 season, the Steelers had a 396-250-2 record.
L78 (solid lifter 375 HP 396) came with a Holley 780. All others had a Quadrajet.
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5 qts with filter.