Early Pontiac GTO

Pontiac 421 428

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Piston Pin Diameter Show all Piston Pin Diameter
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Piston Top Aprox. Comp. Ratio Show all Piston Top Aprox. Comp. Ratio
1-6110-4120 421 428 Pontiac Late 1-FX Series -7cc Late Flat Top Forged Piston Set. 4.120 bore 1-6110-4120 421 428 Pontiac Late 1-FX Series -7cc Late Flat Top Forged Piston Set. 4.120 bore
$649.95
$649.95
421 428 Pontiac Late 1-FX Series 4032 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.97, 78cc-10.33, 85cc-9.68
1-6110-4125 421-428 Pontiac Late 1-FX Series -7cc Late Flat Top Forged Piston Set. 4.125 bore 1-6110-4125 421-428 Pontiac Late 1-FX Series -7cc Late Flat Top Forged Piston Set. 4.125 bore
$649.95
$649.95
421-428 Pontiac Late 1-FX Series 4032 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.99, 78cc-10.35, 85cc-9.70
1-6110-4150 421-428 Pontiac Late 1-FX Series -7cc Late Flat Top Forged Piston Set. 4.150 bore 1-6110-4150 421-428 Pontiac Late 1-FX Series -7cc Late Flat Top Forged Piston Set. 4.150 bore
$649.95
$649.95
421-428 Pontiac Late 1-FX Series 4032 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-11.09, 78cc-10.45, 85cc-9.79
1-6113-4120 421 428 Pontiac Late 1-FX Series -14cc Late Dish Top Forged Piston Set. 4.120 bore 1-6113-4120 421 428 Pontiac Late 1-FX Series -14cc Late Dish Top Forged Piston Set. 4.120 bore
$649.95
$649.95
421 Pontiac Late 1-FX Series 4032 Alloy Comp Hgt: 1.585" -14cc Late Dish Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.23, 78cc-9.68, 85cc-9.12
1-6113-4125 421-428 Pontiac Late 1-FX Series -14cc Late Dish Top Forged Piston Set. 4.125 bore 1-6113-4125 421-428 Pontiac Late 1-FX Series -14cc Late Dish Top Forged Piston Set. 4.125 bore
$649.95
$649.95
421-428 Pontiac Late 1-FX Series 4032 Alloy Comp Hgt: 1.585" -14cc Late Dish Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.25, 78cc-9.70, 85cc-9.14
1-6113-4150 421-428 Pontiac Late 1-FX Series -14cc Late Dish Top Forged Piston Set. 4.150 bore 1-6113-4150 421-428 Pontiac Late 1-FX Series -14cc Late Dish Top Forged Piston Set. 4.150 bore
$649.95
$649.95
421-428 Pontiac Late 1-FX Series 4032 Alloy Comp Hgt: 1.585" -14cc Late Dish Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.35, 78cc-9.79, 85cc-9.22
2-6110-4120 421-428 Pontiac Late 2-FX Series -7cc Late Flat Top Forged Piston Set. 4.120 bore 2-6110-4120 421-428 Pontiac Late 2-FX Series -7cc Late Flat Top Forged Piston Set. 4.120 bore
$679.95
$679.95
421-428 Pontiac Late 2-FX Series 2618 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.97, 78cc-10.33, 85cc-9.68
2-6110-4125 421-428 Pontiac Late 2-FX Series -7cc Late Flat Top Forged Piston Set. 4.125 bore 2-6110-4125 421-428 Pontiac Late 2-FX Series -7cc Late Flat Top Forged Piston Set. 4.125 bore
$679.95
$679.95
421-428 Pontiac Late 2-FX Series 2618 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.99, 78cc-10.35, 85cc-9.70
2-6110-4150 421-428 Pontiac Late 2-FX Series -7cc Late Flat Top Forged Piston Set. 4.150 bore 2-6110-4150 421-428 Pontiac Late 2-FX Series -7cc Late Flat Top Forged Piston Set. 4.150 bore
$679.95
$679.95
421-428 Pontiac Late 2-FX Series 2618 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-11.09, 78cc-10.45, 85cc-9.79
2-6113-4120 421-428 Pontiac Late 2-FX Series -14cc Late Dish Top Forged Piston Set. 4.120 bore 2-6113-4120 421-428 Pontiac Late 2-FX Series -14cc Late Dish Top Forged Piston Set. 4.120 bore
$679.95
$679.95
421-428 Pontiac Late 2-FX Series 2618 Alloy Comp Hgt: 1.585" -14cc Late Dish Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.23, 78cc-9.68, 85cc-9.12
2-6113-4125 421-428 Pontiac Late 2-FX Series -14cc Late Dish Top Forged Piston Set. 4.125 bore 2-6113-4125 421-428 Pontiac Late 2-FX Series -14cc Late Dish Top Forged Piston Set. 4.125 bore
$679.95
$679.95
421-428 Pontiac Late 2-FX Series 2618 Alloy Comp Hgt: 1.585" -14cc Late Dish Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.25, 78cc-9.70, 85cc-9.14
2-6113-4150 421-428 Pontiac Late 2-FX Series -14cc Late Dish Top Forged Piston Set. 4.150 bore 2-6113-4150 421-428 Pontiac Late 2-FX Series -14cc Late Dish Top Forged Piston Set. 4.150 bore
$679.95
$679.95
421-428 Pontiac Late 2-FX Series 2618 Alloy Comp Hgt: 1.585" -14cc Late Dish Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Boost and NOS Ready! (Moderate to High Levels) Aprox Comp Ratio: 72cc-10.35, 78cc-9.79, 85cc-9.22
3-6110-4120 421-428 Pontiac Late 3-FX Series -7cc Late Flat Top Forged Piston Set. 4.120 bore 3-6110-4120 421-428 Pontiac Late 3-FX Series -7cc Late Flat Top Forged Piston Set. 4.120 bore
$859.95
$859.95
421-428 Pontiac Late 3-FX Series 2618 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to Extreme Levels) Aprox Comp Ratio: 72cc-10.97, 78cc-10.33, 85cc-9.68
3-6110-4125 421-428 Pontiac Late 3-FX Series -7cc Late Flat Top Forged Piston Set. 4.125 bore 3-6110-4125 421-428 Pontiac Late 3-FX Series -7cc Late Flat Top Forged Piston Set. 4.125 bore
$859.95
$859.95
421-428 Pontiac Late 3-FX Series 2618 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to Extreme Levels) Aprox Comp Ratio: 72cc-10.99, 78cc-10.35, 85cc-9.70
3-6110-4150 421-428 Pontiac Late 3-FX Series -7cc Late Flat Top Forged Piston Set. 4.150 bore 3-6110-4150 421-428 Pontiac Late 3-FX Series -7cc Late Flat Top Forged Piston Set. 4.150 bore
$859.95
$859.95
421-428 Pontiac Late 3-FX Series 2618 Alloy Comp Hgt: 1.585" -7cc Late Flat Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to Extreme Levels) Aprox Comp Ratio: 72cc-11.09, 78cc-10.45, 85cc-9.79
3-6113-4120 421-428 Pontiac Late 3-FX Series -14cc Late Dish Top Forged Piston Set. 4.120 bore 3-6113-4120 421-428 Pontiac Late 3-FX Series -14cc Late Dish Top Forged Piston Set. 4.120 bore
$859.95
$859.95
421-428 Pontiac Late 3-FX Series 2618 Alloy Comp Hgt: 1.585" -14cc Late Dish Top Pin: .980 Ring Grooves: 1/16-1/16-3/16" Stroke: 4.000" Rod: 6.625" Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to Extreme Levels) Aprox Comp Ratio: 72cc-10.23, 78cc-9.68, 85cc-9.12