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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 # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
110cc 118cc 124cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
243326 571 4.560 4.375 6.535 9.780 1.060 15.9 14.5 13.2 43.0 547 B 0.094 J77008-4560-5
243327 581 4.600 4.375 6.535 9.780 1.060 16.0 14.7 13.9 43.0 558 B 0.134 J77008-4600-5
243328 584 4.610 4.375 6.535 9.780 1.060 16.2 14.8 13.9 43.0 562 B 0.144 J77008-4610-5
243329 588 4.625 4.375 6.535 9.780 1.060 16.3 14.9 14.0 43.0 564 B 0.159 J77008-4625-5
243330 555 4.560 4.250 6.535 9.780 1.120 16.0 14.6 13.7 46.0 574 B 0.094 J77008-4560-5
243331 565 4.600 4.250 6.535 9.780 1.120 16.3 14.8 13.9 46.0 590 B 0.134 J77008-4600-5
243332 567 4.610 4.250 6.535 9.780 1.120 16.3 14.9 14.0 46.0 590 B 0.144 J77008-4610-5
243333 571 4.625 4.250 6.535 9.780 1.120 16.4 14.9 14.0 46.0 597 B 0.159 J77008-4625-5

Error processing SSI file