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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
- Heavy duty rear servo
reduce stretching and prevent slippage compared to traditional 6 Rib designs
The rods may be Callies or Manley while the pistons are Manley or Diamond depending upon availability
The customer was able to get his Camaro onto ProSpeed's hub dyno and aired it out
These blocks are a 6-bolt
Dart Big M Sportsman BBC Iron Block, Assembly-Ready Big M Upgrade:No - Heavy duty rear servoNOTE: 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