Forged PISTONS - Boss 331 Stroker / 331 Stroker

 

 

Ford Pistons - Boss 331 Stroker / 331 Stroker

SX-FX Ford Pistons Boss 331 Stroker / 331 Stroker

Available Bore Sizes:  4.000 , 4.030 , 4.040 , 4.060

Add the Bore size to the end of the part # IE. 1-3250-4030 for a 4.030 bore size.

Series CID Stroke Rod Length Pin Height Pin Size Ring Sizes Piston Top

Compression Ratio

Head CC - Comp Ratio

Alloy Pistons Piston and Ring Kits
SX 331 Stroker 3.250" 5.400" 1.165" .927 1/16-1/16-3/16" -5cc Flat Top Inline / Twisted Wedge 58cc-10.40, 61cc-10.02, 64cc-9.67 4032 8855 K8855
SX 331 Stroker 3.250" 5.400" 1.165" .927 1/16-1/16-3/16" -13cc Dish Top Inline / Twisted Wedge 58cc-9.45, 61cc-9.14, 64cc-8.85 4032 8856 K8856
SX 331 Stroker 3.250" 5.400" 1.165" .927 1/16-1/16-3/16" -18cc Dish Top Inline / Twisted Wedge 58cc-8.95, 61cc-8.67, 64cc-8.42 4032 8857 K8857
1-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -4cc Flat Top inline 58cc-10.53, 61cc-10.14, 64cc-9.78 4032 1-3250 K1-3250
2-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -4cc Flat Top inline 58cc-10.53, 61cc-10.14, 64cc-9.78 2618 2-3250 K2-3250
3-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -4cc Flat Top inline 58cc-10.53, 61cc-10.14, 64cc-9.78 2618 3-3250 K3-3250
1-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -5cc Flat Top Inline/ Twisted Wedge 58cc-10.40, 61cc-10.02, 64cc-9.67 4032 1-3251 K1-3251
2-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -5cc Flat Top Inline/ Twisted Wedge 58cc-10.40, 61cc-10.02, 64cc-9.67 2618 2-3251 K2-3251
3-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -5cc Flat Top Inline/ Twisted Wedge 58cc-10.40, 61cc-10.02, 64cc-9.67 2618 3-3251 K3-3251
1-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -2cc Flat Top Twisted Wedge 58cc-10.81, 61cc-10.40, 64cc-10.02 4032 1-3252 K1-3252
2-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -2cc Flat Top Twisted Wedge 58cc-10.81, 61cc-10.40, 64cc-10.02 2618 2-3252 K2-3252
3-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -2cc Flat Top Twisted Wedge 58cc-10.81, 61cc-10.40, 64cc-10.02 2618 3-3252 K3-3252
1-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -13cc Dish Top Inline / Twisted Wedge 58cc-9.45, 61cc-9.14, 64cc-8.85 4032 1-3256 K1-3256
2-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -13cc Dish Top Inline / Twisted Wedge 58cc-9.45, 61cc-9.14, 64cc-8.85 2618 2-3256 K2-3256
3-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -13cc Dish Top Inline / Twisted Wedge 58cc-9.45, 61cc-9.14, 64cc-8.85 2618 3-3256 K3-3256
1-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -18cc Dish Top Inline / Twisted Wedge 58cc-8.95, 61cc-8.67, 64cc-8.42 4032 1-3258 K1-3258
2-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -18cc Dish Top Inline / Twisted Wedge 58cc-8.95, 61cc-8.67, 64cc-8.42 2618 2-3258 K2-3258
3-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -18cc Dish Top Inline / Twisted Wedge 58cc-8.95, 61cc-8.67, 64cc-8.42 2618 3-3258 K3-3258
1-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +6cc Dome Top inline 58cc-12.11, 61cc-11.58, 64cc-11.10 4032 1-3266 K1-3266
2-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +6cc Dome Top inline 58cc-12.11, 61cc-11.58, 64cc-11.10 2618 2-3266 K2-3266
3-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +6cc Dome Top inline 58cc-12.11, 61cc-11.58, 64cc-11.10 2618 3-3266 K3-3266
1-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +6cc Dome Top Twisted Wedge 58cc-12.11, 61cc-11.58, 64cc-11.10 4032 1-3268 K1-3268
2-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +6cc Dome Top Twisted Wedge 58cc-12.11, 61cc-11.58, 64cc-11.10 2618 2-3268 K2-3268
3-FX 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +6cc Dome Top Twisted Wedge 58cc-12.11, 61cc-11.58, 64cc-11.10 2618 3-3268 K3-3268
1-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -3cc Flat Top BOSS/Canted 58cc-10.67, 61cc-10.27, 64cc-9.90 4032 1-3270 K1-3270
2-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -3cc Flat Top BOSS/Canted 58cc-10.67, 61cc-10.27, 64cc-9.90 2618 2-3270 K2-3270
3-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -3cc Flat Top BOSS/Canted 58cc-10.67, 61cc-10.27, 64cc-9.90 2618 3-3270 K3-3270
1-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -13cc Dish Top BOSS/Canted 58cc-9.45, 61cc-9.14, 64cc-8.85 4032 1-3271 K1-3271
2-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -13cc Dish Top BOSS/Canted 58cc-9.45, 61cc-9.14, 64cc-8.85 2618 2-3271 K2-3271
3-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM -13cc Dish Top BOSS/Canted 58cc-9.45, 61cc-9.14, 64cc-8.85 2618 3-3271 K3-3271
1-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +7.5cc Dome Top Cleveland Open Chamber 58cc-12.39, 61cc-11.84, 64cc-11.34 4032 1-3275 K1-3275
2-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +7.5cc Dome Top Cleveland Open Chamber 58cc-12.39, 61cc-11.84, 64cc-11.34 2618 2-3275 K2-3275
3-FX BOSS 331 Stroker 3.250" 5.400" 1.165" .927 1.2/1.2/3MM +7.5cc Dome Top Cleveland Open Chamber 58cc-12.39, 61cc-11.84, 64cc-11.34 2618 3-3275 K3-3275