Originally posted by Mike Rietow:
quote:
Originally posted by ts393c:
Just curious on peoples thoughts. But when you talk about cranks and blocks. Witch is better. Small journal mains or large journal mains. I can see pros and cons both way. Smaller less rotating weight. Larger should be stronger.
A practical approach to take when considering overlap is if a Top Fuel engine has large journals and a pro stock engine small, with large and small being relative. Crank deflection at high rpm is determined more according to application. Some of these aftermarket blocks you sacrifice strength of the cap 400 sbc mains. So there's another variable. Overlap depends on what you're building.
