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Author Topic:   400 block
Dirt Freak

Total posts: 217
posted February 01, 2005 06:21 AM  
What would be the life expectancy of a stock 400 block turned into a 421? providing it is a good build to start with.

[This message has been edited by akadirtracer7 (edited February 01, 2005).]

Dirt Freak

Total posts: 229
posted February 01, 2005 07:49 AM  
Two of my friends run 421, both are exactly the same engine, same builder, one engine has zero races on it just installed this winter, the other has about 21 races on it, with nothing done to it.
The same guy has ran a 421 for years, the longest one of them lasted was around 39 races, it was almost 2 full race seasons.

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