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Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by FullOfRage, Mar 20, 2013.
What's the difference between the 331 and 347 ?
The 331 has a 3.25" stroke crankshaft, the 347 has a 3.4" stroke crankshaft. There may be other differences, but that is the largest between the two.
Here's some reading... i choose a 331 myself.
The part about rod to stroke ratios makes me understand why people rarely seem to go bigger than 408 on a 351-based stroker.
Just a stroke difference between the two.
There are stock production motors that have worse rod to stroke ratios...anything over a 4-4.1" stroke makes pistons a challenge for clearance.
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