Ford 302W flat top dual valve relief

Application: 

Recommended for applications using nitrous (up to 250HP shot) / not recommended for forced induction.

Includes:

Complete set of pistons, locks, pins & oil rail spacers (as required).

Specifications:

Piston top type: flat top.
Bore: 4.001" & 4.030".
Stroke: 3.250".
Rod Length: 5.400
Compression height: 1.160".
Compression ratio (58): 10.2 & 10.3.
Compression ratio (61): 9.8 & 9.9.
Compression ratio (72): 8.7 & 8.8. 
Dome volume: -6.10cc.
Gram weight: 439 & 450.
Rings: 1/16", 1/16", 3/16".
Ring set: TOT-CR3690.
Rings included: no.
Pin type: 5115 straight wall.
Pin diameter: .927".
Pin wall: .150".
Pin length: 2.500".
Pin weight: 118.
Block height: 8.200".
Oil rail spacer: ORS-400.
NOTE: Piston rings sold separately.