Thread: Tell me about a 400 sb

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I ran a couple of 400's in stock cars 20 some years ago. Great engines, lots of cheap horsepower. They were tougher to keep cool than a 350 in that application, and they were less forgiving of high RPM's due to the longer stroke. I saw plenty of them get blown up with guys running stock bottom ends at 7000 plus RPM.

If I found one with 80,000 miles for $650, I would jump on it.

Originally Posted by Driver50x

I ran a couple of 400's in stock cars 20 some years ago. Great engines, lots of cheap horsepower. They were tougher to keep cool than a 350 in that application, and they were less forgiving of high RPM's due to the longer stroke. I saw plenty of them get blown up with guys running stock bottom ends at 7000 plus RPM.

If I found one with 80,000 miles for $650, I would jump on it.

I really thought about it because it would be a direct bolt in, but according to specs it's no power house the way it sits. It'll need heads, cam and an intake to make it decent then the 80k mile thing really isn't worth it to me. It doesn't cost too much to build a bottom end. I think I'll be able to leave the 350 together because the heads are great and just swap the cam.