Re: your opinion on 400 smallblock?

Posted by L.C.Gray on June 20, 2007 at 17:21:58 from (208.193.186.130):

In Reply to: your opinion on 400 smallblock? posted by farmer poor on June 20, 2007 at 16:55:49:

The 400 developed a reputation for overheating and spinning main bearings. Whether it was deserved or not I couldn't realy make a case either way.

I started to build a 400 for a street machine once only to find out the donor engine was a boat anchor due to a spun main. I went right back to the ever faithful 350 again.

The biggest problem with 400s is too many unique parts compared to the other mouse motors. The blocks and heads have significant differences, rod and main journals are sized different, rods are different length and sometimes the biggest suprise comes from the unique flywheels and harmonic balancers. Most people don't realize 400s are the only externally balanced mouse.

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