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SMALL BLOCK CHEVY
BIG BLOCK CHEVY
FORD
MOPAR
BUICK
NHRA
LS1, LS6, Z06, 5.7L, 6.0L    F.S.R. (Flat Top)

Our New FSR (Forged Side Relief) slipper forging design allows the use of the most popular stroke and rod combinations while eliminating reluctor wheel clearence problems (see photo). Lightweight and extremely durable, these pistons are machined for 1.5, 1.5, 3mm rings and have an inverted dome designed to achieve optimum compression ratio with forced induction applications (CR calculated with .042 gasket thickness and 0.00" deck clearence).

Includes:
Pin #927-2250-15-51C (111g)
Wire locks #927-073-MW

350 Series
Std Bore: 3.900"-5.7L, 4.000"-6.0L
Ring package designed for: 1.5, 1.5, 3MM Rings

 Tech and Installation Tips
 Valve Relief Diagram
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
64cc 66cc 72cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
243016 403 4.005 4.000 6.125 9.240 1.115 11.6 11.3 10.6 -5.0 402 B, C 0.005 J60008-4000-5
243017 408 4.030 4.000 6.125 9.240 1.115 11.7 11.4 10.7 -5.0 410 B, C 0.030
243018 427 4.125 4.000 6.125 9.240 1.115 12.1 11.9 11.1 -5.0 440 B, C STD LS7 J60008-4125-5

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