I bought a '95 Pete with a 430 Detroit a couple of years ago and had it turned up to 470. It has 920,000 miles and has never been opened up. It seems to have a lot of blowby, but it runs good and started up the other day when it was 5 degrees. I did have to replace the computer. Sometime ago a bolt fell in between it and the block and wore a hole through it and it had about an inch of water in it. Glad I caught it before it died. Anyway, it's a good engine.