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Chevrolet Performance DRCE 2 Engine Blocks 24502572

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Engine Block, Cast Iron, 4-Bolt Mains, 4.500 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, DRCE 2, Each

  • Order this item and get free delivery and handling on your entire order! Truck freight fees also waived on this item. Valid on orders shipped in the contiguous United States.

Estimated Ship Date: 10/13/2014 (if ordered today) Would you rather pick it up? Select Location

Manufacturer's Part Number: 24502572
Summit Racing Part Number: NAL-24502572

Main Journal Type: OEM
Engine Block Style: Aftermarket
Deck Height (in): 9.500 in.
Cylinder Bore as Shipped: 4.490 in.
Cylinder Bore Diameter: 4.500 in.
Engine Block Material: Cast iron
Engine Block Weight (lbs): 255 lbs.
Main Bolt Style: 4-bolt
Main Caps Included: Yes
Main Cap Material: Steel
Main Cap Fasteners Included: Yes
Main Bearings Included: No
Rear Main Seal Style: 2-piece
Finished Cylinder Bores: No
Raised Cam Location: No
Cam Bearings Included: No
Freeze Plugs Included: No
Quantity: Sold individually.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Want to go NHRA Pro Stock racing? Make sure you get one of these Chevrolet Performance DRCE 2 engine blocks to build your high-revving competition engine. These Chevrolet Performance DRCE 2 engine blocks have been newly redesigned Oldsmobile DRCE blocks, and they're designed for competition in 500 c.i.d. NHRA Pro Stock drag racing or similar-type usage. Chevrolet Performance DRCE 2 engine blocks feature a relocated camshaft that has been raised to 5.750 in. The deck height is 9.525 in. and can be reduced to approximately 9.000 in., the distributor hole has been moved rearward on the block, and the overall weight has been reduced by approximately 11 lbs. The cylinder bore centerline spacing has been increased to 4.840 in., which is the maximum legal bore spacing allowed for NHRA Pro Stock competition. The new bore spacing of 4.900 in. will allow the use of a big bore with short stroke piston and crankshaft combinations to enhance performance. The increase in cylinder bore spacing reduces valve shrouding and permits the use of larger valves to improve airflow. The semi-finished cylinder is bored to a 4.500 in. diameter with a maximum 4.700 in. recommended bore diameter. New elliptical siamesed cylinder barrels maximize wall thickness on the major and minor thrust axes, allowing for lighter-weight piston and rod combinations, and improve carburetor and intake manifold port alignment with Pro Stock type induction systems. The Chevrolet Performance DRCE 2 engine blocks' camshaft tunnel will accommodate a 2.166 in. cam bearing and relocated main bearing bulkheads to distribute crankshaft loads evenly. The lifter bosses have been replaced with a solid bar, and the lifter holes are not drilled to allow engine builders to position them for their own valvetrain geometry. The head bolt holes are not drilled to allow engine builders to accommodate Pontiac, Oldsmobile DRCE, or Chevrolet bolt patterns. The rear flange has a hybrid bolt pattern that accommodates Oldsmobile, Pontiac, or Chevrolet bellhousings. The oil pan rails have been spread .400 in. per side to provide room for longer-stroke crankshafts, and the starter motor can be mounted on either side.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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