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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 #990-2930-18-51S (174g)
Double spiro locks (#990-042-CS)
Double pin oilers
OPEN CHAMBER DOME GP (GAS PORTED)
Std Bore: 4.466
Ring package designed for: .043 BACKCUT, .043 D-WALL, 3MM Rings

Click here to see matching JE Pro Seal Head Gaskets!

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
243330 621 4.560 4.750 6.700 10.195 1.120 17.8 16.2 15.2 46.0 574 B .094 J77008-4560-5
243331 632 4.600 4.750 6.700 10.195 1.120 18.1 16.5 15.4 46.0 590 B .134 JG7708-4600-5
243332 634 4.610 4.750 6.700 10.195 1.120 18.2 16.5 15.5 46.0 590 B .144 JG7708-4610-5
243333 638 4.625 4.750 6.700 10.195 1.120 18.3 16.7 15.6 46.0 592 B .159 JG7708-4625-5
243326 604 4.560 4.625 6.800 10.173 1.060 16.8 15.3 14.4 43.0 547 B .094 JG7708-4560-5
243327 615 4.600 4.625 6.800 10.173 1.060 17.0 15.5 14.6 43.0 558 B .134 JG7708-4600-5
243328 618 4.610 4.625 6.800 10.173 1.060 17.1 15.6 14.6 43.0 567 B .144 JG7708-4610-5
243329 622 4.625 4.625 6.800 10.173 1.060 17.2 15.7 14.8 43.0 564 B .159 JG7708-4625-5
243326 571 4.560 4.375 6.535 9.783 1.060 15.9 14.5 13.2 43.0 547 B 0.094 JG7708-4560-5
243327 581 4.600 4.375 6.535 9.783 1.060 16.0 14.7 13.9 43.0 558 B 0.134 JG7708-4600-5
243328 584 4.610 4.375 6.535 9.783 1.060 16.2 14.8 13.9 43.0 562 B 0.144 JG7708-4610-5
243329 588 4.625 4.375 6.535 9.783 1.060 16.3 14.9 14.0 43.0 564 B 0.159 JG7708-4625-5
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 JG7708-4600-5
243332 567 4.610 4.250 6.535 9.780 1.120 16.3 14.9 14.0 46.0 590 B 0.144 JG7708-4610-5
243333 571 4.625 4.250 6.535 9.780 1.120 16.4 14.9 14.0 46.0 597 B 0.159 JG7708-4625-5

- 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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