[BRENT in 10-uh-C]

Originally Posted by chris_shroh

I am just getting into building model a engines with performance parts and was wondering if anyone could tell me if you get better performance from having the spark plugs in the side of the head? Also how far with a stock block can you go to produce horsepower with babbit bearings ?

Depends on which "side" of the head. Some folks want them partially on the outside with some of it sticking through the inside. In all seriousness, what you are asking without knowing exactly "which" head would be just pure speculation. OHV vs. F-head sv. L-head greatly matters, and the shape of each of those combustion chambers.

With regard to babbitt, I know you could safely make more horsepower on babbitt than what the 3-main crank can handle. If you need a number, ...I would feel comfortable making 200+ hp on 'banger' w/ babbitt.

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