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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
6 bolt per cylinder capability
we need to work with the best suppliers
reduce stretching and prevent slippage compared to traditional 6 Rib designs
The customer was able to get his Camaro onto ProSpeed's hub dyno and aired it out
- Heavy duty rear servo
Dart Big M Sportsman BBC Iron Block, Assembly-Ready Big M Upgrade:No 6 bolt per cylinder capabilityNOTE: DART'S FOUNDRY HAS FILED BANKRUPTCY MAKING FUTURE SUPPLY UNCERTAIN. WE HAVE STANDARD DECK & CAM BLOCKS, 4. 560 AND 4. 600 BORES IN STOCK. THEY ARE NOW ONLY AVAILABLE FOR PURCHASE FROM US EITHER FULLY MACHINED OR AS PART OF A BUILD. WE CAN OPTIONALLY UPGRADE THESE TO BIG M's (STEEL MAIN CAPS). Overview With multiple deck heights and bore sizes up to 4. 600", the Big M Sportsman block gives you the versatility to build a wide variety of engine
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