L31 350 SB Chevrolet Balanced & Blueprinted Short Block
PRTL ENG
Part #
12556121BP
Price: $2,159.95
Quantity:
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If you need a GM short block for all-out performance send it to our machine shop for balancing and blueprinting. Each short block will be completely disassembled, have the rotating assembly balanced, all clearances checked, zero deck the block, torque-plate hone the cylinder walls, and reassemble the short block using Clevite 77 main and rod bearings.
Block: Cast Iron, 4 bolt
Compression Ratio: 8.3:1 w / 72cc heads
Compression Ratio: 9.0:1
Crankshaft: Nodular Iron
Piston Description: Cast Dish 4VR (-13cc)
Rear Main Seal Type: 1 piece
Stroke (in.): 3.480


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