NOTE: These pistons are specifically made to fit 4.6 3V engines and feature a symmetrical valve relief to clear exhaust valves on 3V SOHC engines. These MUST be used with 4.6 VVT 3V engines, however they can be used on all 4.6 and 5.4 2V, 3V and 4V cylinder heads

ModMax OEM Replacement Pistons are a great choice for a rebuild or an upgrade to change compression for street and mild race applicatons. These pistons are precision cast from High Silicon Hypereutectic aluminum alloys to exceed OEM specs. The special alloy allows for great heat transfer, low expansion for tight sealing, and even material distribution through the alloy to eliminate weak spots. They will fit all 4.6 SOHC or DOHC 2V, SOHC 3V or 4V engines, or all 5.4 2V, 3V, or 4V engines. Any of our standard replacement ring sets or upgraded rings will fit these pistons. Whether you have press fit or bushed rods these pistons are equipped with retaining locks for the pins so they can work for either rod application.

• Bore Sizes: Standard (3.552"), .020" over, .030" over
• Compression Distance: 1.200"
• Dish Volume: 6cc (Dish Top) 3V Specific valve reliefs
• Pin Size: OEM .866" Piston Pins - Standard Wall
• Pin Retention: Full Floating with lock rings
• Ring Sizes: 1.5mm-1.5mm-3mm

FOR YOUR COMPRESSION RATIO WITH THESE PISTONS PLEASE SEE THE CHART BELOW

COMPRESSION RATIOS	2V NON PI	2V PI	3V ALL	4V ALL
6cc Dished with 4.6 Engine	9.5:1	10.6:1	9.6:1	9.6:1
6cc Dished with 5.4 Engine	9.0:1	9.8:1	9.1:1	9.1:1