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  JE Pistons - SB Chevy
400 SB GP (Gas Ported) 18° Dome
Includes:
Pistons, Pins, Single Spiro Locks

The same as the 400 SB 18° Dome pistons, but equipped with lateral gas ports and machined for our new Pro Steel rings, with 1.2, 1.5, 3mm axial thickness and back-cut radial widths.
 
Bore Stroke Rod
Length
C/H Head C.U. Dome
Vol.
Grams Notes Piston
Part #
Price/
Set
Ring #
(J75008-)
52cc 55cc 60cc
4.125 4.000 6.000 1.000 15.9 15.2 14.5 2.5 444 S, B 218595 $833 4125-5
$125
4.125 3.875 6.000 1.062 15.4 14.7 14.1 2.5 454 S, B 218594 $833 4125-5
$125
4.125 3.800 6.000 1.100 15.1 14.5 13.8 2.5 464 M, S, B 218592 $833 4125-5
$125
4.125 3.750 6.000 1.125 14.9 14.3 13.7 2.5 466 S, B 218593 $833 4125-5
$125

Foot Notes:
B = Oil Rail Support Included
M = Made to order
S = Solid Dome Design