SPECIFICATIONS:
4.000" to 4.125" bore capacity
Centrifugally cast liners
All aluminum water jacket and oil galley plugs
9.2" deck height
4-bolt main journals one through five
Dry sump design
2.750" main bearing journals
Enclosed cam tunnel
Light-weight at only 92lbs
Billet steel main caps
Recommended for Dirt late model, Sprint, 410 Sprint
Use with 397-M-6701-B351" crankshaft seal, 397-M-6269-C450 cam thrust retainer, 397-M-6268-C450 timing chain and gear set, M-6059-C450 timing cover, and 397-M-6261-C450 cam bearings
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