Not Ranked
truck blocks had ribs too, but the lack of engineering number rules those out.
it could be a 428 service or a reg 390 70's vintage. the heads don't seem to be tightened down, measure the bore. standard bore 428 is 4.130, std bore 390 is 4.05.
you can decipher an overbore size from there
__________________
Fred B
|