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396, 427, 454 CLOSED CHAMBER

New high compression dome Piston Designed specifically for closed chamber cylinder heads. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings.

Includes:
Pin #990-2930-15-51S (150g)
Double spiro locks (#990-042-CS)
Forced pin oiler, with annular oil reservoir
396, 427, 454 CLOSED CHAMBER DOME
Std Bore: 4.250 *
Ring package designed for: 1/16, 1/16, 3/16 Rings

Tech and Installation Tips
Valve Relief Diagram
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
101cc 107cc 109cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
258204 460 4.280 4.000 6.135 9.783 1.648 13.5 12.5 12.1 33.0 645 0.030 J100F8-4280-5
258205 466 4.310 4.000 6.135 9.783 1.648 13.4 12.4 12.0 33.0 658 0.060 J100F8-4310-5
258206 402 4.125 3.760 6.135 9.780 1.765 13.5 12.5 12.1 44.0 634 *,M J100F8-4125-5
258207 409 4.155 3.760 6.135 9.780 1.765 13.5 12.5 12.1 44.0 649 * J100F8-4155-5
258208 433 4.280 3.760 6.135 9.780 1.765 13.5 12.5 12.1 39.0 687 0.030 J100F8-4280-5
258209 439 4.310 3.760 6.135 9.780 1.765 13.4 12.4 12.0 39.0 695 M 0.060 J100F8-4310-5

- 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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