These pistons are a 4.375" (.035 over) bore -24cc DISHED piston which will work in a 400 block with our 4.15" stroke and 6.76" rod "500CI" 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. 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#: |
4.375
(.035 over) |
-24 |
1.122" |
-.023" |
10.79 |
10.18 |
9.94 |
9.71 |
9.29 |
9.15 |
9.03 |
6000 |