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Uses standard small block components .... and then adds features you won't find in any production casting. With extra-thick cylinder walls, steel four bolt main caps including front and rear (still clears most offthe- shelf pans) and a competition oiling system. Little M blocks can be safely bored to 4.185".Plus Freight

* Actual freight charges may vary depending on delivery location. Residential delivery and lift gate service available for an additional fee as determined by UPS. Doug Herbert Performance strongly recommends delivery to a commercial address or pick up from your local UPS terminal. A DHP shipping specialist will contact you with details on your shipment.