Platinum Series Pistons - 4.380 -4 FT

These pistons are a 4.380" bore Flat Top piston which will work in either a 440 block with our 4.500" stroke and 7.100" rod "543CI" stroker combination, or in a 400 block with either our 4.25" stroke and 6.535" rod "512CI" stroker combination, or our 3.75" stroke and 6.76" rod "451CI" stroker combination. All our platinum pistons use 1/16, 1/16, 3/16 ring pack for less frictional loss, and weight saving, full floating .990 pin size. The compression ratios and distance below deck will change slightly depending on which stroker combination you are using these pistons with. Our table below shows detailed compression ratios.

Bore Size:	Dish (-) or  Dome (+) CC's	Compression Height:	Distance Below Deck:	65CC	72CC	75CC	78CC	84CC	86CC	88CC	Part#:
For 440>>543 Stroker Kit: (4.500" stroke / 7.100" Rod)
4.380 (.060 over)	-4 (FT)	1.320"	-.050"	13.14	12.28	11.94	11.63	11.05	10.87	10.70	5056
For 400>>512 Stroker Kit: (4.250" stroke / 6.535" Rod)
4.380 (.040 over)	-4 (FT)	1.320"	-.000"	14.25	13.18	12.77	12.38	11.69	11.47	11.27	5056
For 400>>451 Stroker Kit: (3.750" stroke / 6.76" Rod)
4.380 (.040 over)	-4 (FT)	1.320"	-.025"	11.85	11.03	10.71	10.41	9.87	9.71	9.54	5056