SMALL BLOCK CHEVY
BIG BLOCK CHEVY
FORD
MOPAR
BUICK
NHRA
OPEN CHAMBER DOME GP (GAS PORTED)

These big block pistons are the top choice for drag race applications. Compression Height figured using 9.780 block height with zero deck clearance. Pistons will not work with Edelbrock #6045, 6040, 6055 heads. These pistons have vertical gas ports and backcut top rings and D-Wall second rings (.043, .043, 3mm) and a low tension oil ring.

Includes:
Pin #990-2930-15-51S (150g)
Double spiro locks (#990-042-CS)
Double pin oilers

OPEN CHAMBER
Std Bore: 4.466
Ring package designed for: .043 BACKCUT, .043 D-WALL, 3MM Rings
 Tech and Installation Tips
 Valve Relief Diagram
Part # Cubic
Inches		 Bore Stroke Rod
Length		 Block
Height		 Compression
Distance
Head Cubic Centimeters
110cc 118cc 124cc
Compression Ratio
Dome
Volume		 Gram
Weight		 Footnote Oversize
243326 571 4.560 4.375 6.535 9.780 1.060 15.9 14.5 13.2 43.0 547 B 0.094
243327 581 4.600 4.375 6.535 9.780 1.060 16.0 14.7 13.9 43.0 558 B 0.134
243328 584 4.610 4.375 6.535 9.780 1.060 16.2 14.8 13.9 43.0 562 B 0.144
243329 588 4.625 4.375 6.535 9.780 1.060 16.3 14.9 14.0 43.0 564 B 0.159
243330 555 4.560 4.250 6.535 9.780 1.120 16.0 14.6 13.7 46.0 574 B 0.094
243331 565 4.600 4.250 6.535 9.780 1.120 16.3 14.8 13.9 46.0 590 B 0.134
243332 567 4.610 4.250 6.535 9.780 1.120 16.3 14.9 14.0 46.0 590 B 0.144
243333 571 4.625 4.250 6.535 9.780 1.120 16.4 14.9 14.0 46.0 597 B 0.159


- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.

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