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FE Technical Forum / 390 block bored .080 over would hard block help?
« on: March 10, 2019, 06:17:01 PM »
Was looking at an early 70's 390 block that was bored to standard 428 size as the owner bought into the myth that it was same as a 428 service block because it has external ribs and passed the drill bit test.
So block had a lot of machine work done and cracked a cylinder. Clearly I'd never start with a 390 block to make a 428, but can get it cheap and was wondering if a sleeve and a 1/2 fill of hard block would work for a basically street deal. Thanks, Steve
So block had a lot of machine work done and cracked a cylinder. Clearly I'd never start with a 390 block to make a 428, but can get it cheap and was wondering if a sleeve and a 1/2 fill of hard block would work for a basically street deal. Thanks, Steve