Stock Stroke and Stroker — 428 Pistons for Pontiac V8s
428 Pistons share a bore family with the 400 but not a stroke. The 428 came with a 4.000" stroke crank, so what is already a stroker piston in a 400 is the stock-stroke piston here. That changes the compression height, the rod length and which dish volume gets you to a pump gas compression ratio.
Butler stocks Keith Black hypereutectic flat tops, Icon forged dish sets cut for the 428 stroke, DSS 2618 forged pistons across 4.000" through 4.500" strokes, and Butler/Ross Quick Ship forged flat tops and CNC milled dish tops.
Description: Quick Ship from Butler Ross Racing Pistons
4.250 Stroke
1.295Ch
4.150 Bore (.057" over 421)
1/16 1/16 3/16 Ring Size
Pins and rings not included
Item #: ROS-BU4254150-8
Condition: New
Price: $749.95
Butler Ross Quick Ship 16 to 42cc Dish Top Forged Pistons, 4.210" Str., 4.181" Bore, Set/8New
Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.210 Stroke
1.495Ch
4.181 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Description: Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.210 Stroke
1.495Ch
4.181 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Item #: ROS-BU4214181-DS-8
Condition: New
Price: $949.95
Butler Ross Quick Ship 16 to 42cc Dish Top Forged Pistons, 4.250" Str., 4.150" Bore, Set/8New
Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.150 Bore (.057" over 421)
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Description: Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.150 Bore (.057" over 421)
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Item #: ROS-BU4254150-DS-8
Condition: New
Price: $949.95
Butler Ross Quick Ship 16 to 42cc Dish Top Forged Pistons, 4.250" Str., 4.155" Bore, Set/8New
Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.155 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Description: Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.155 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Item #: ROS-BU4254155-DS-8
Condition: New
Price: $949.95
Butler Ross Quick Ship 16 to 42cc Dish Top Forged Pistons, 4.250" Str., 4.160" Bore, Set/8New
Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.160 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Description: Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.160 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Item #: ROS-BU4254160-DS-8
Condition: New
Price: $949.95
Butler Ross Quick Ship 16 to 42cc Dish Top Forged Pistons, 4.250" Str., 4.181" Bore, Set/8New
Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.181 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Description: Quick Ship from Butler Ross Racing Pistons
Custom Dish CC CNC Milled at Butler
4.250 Stroke
1.295Ch
4.181 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Item #: ROS-BU4254181-DS-8
Condition: New
Price: $949.95
Butler Ross Quick Ship Flat Top Forged Pistons, 4.250" Str., 4.160" Bore, Set/8New
Quick Ship from Butler Ross Racing Pistons
Thick Flat Top
4.250 Stroke
1.295Ch
4.160 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Description: Quick Ship from Butler Ross Racing Pistons
Thick Flat Top
4.250 Stroke
1.295Ch
4.160 Bore
1/16 1/16 3/16 Ring Size
Pins Included
Rings not included
Item #: ROS-BU4254160-8
Condition: New
Price: $749.95
Diamond Custom Piston Set, Any Bore, Any Stroke, Flat, Dish, or Dome, SetNew
Fully Custom Diamond Pistons
Made with 2618 - T6 forging
Choose Dish, Dome, or Flat Top
Any Stroke or Bore
Choose rings, pins, and more
Enter specs and details to help us customize it
Our exp...
Description: Fully Custom Diamond Pistons
Made with 2618 - T6 forging
Choose Dish, Dome, or Flat Top
Any Stroke or Bore
Choose rings, pins, and more
Enter specs and details to help us customize it
Our...More Details »
Item #: DIA-CUSTOM
Condition: New
Ships in 14-16 weeks
Price: $1,429.00
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.120" Bore, -18cc Dish Top, Set/8, DSS-K1-6125-4120New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.120" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.120" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6125-4120
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.120" Bore, -7cc Flat Top, Set/8, DSS-K1-6120-4120New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.120" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &m...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.120" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6120-4120
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.125" Bore, -18cc Dish Top, Set/8, DSS-K1-6125-4125New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.125" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.125" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6125-4125
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.125" Bore, -7cc Flat Top, Set/8, DSS-K1-6120-4125New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.125" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &m...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.125" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6120-4125
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.150" Bore, -18cc Dish Top, Set/8, DSS-K1-6125-4150New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.150" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.150" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6125-4150
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.150" Bore, -7cc Flat Top, Set/8, DSS-K1-6120-4150New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.150" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &m...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.150" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6120-4150
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.160" Bore, -18cc Dish Top, Set/8, DSS-K1-6125-4160New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.160" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.160" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6125-4160
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.160" Bore, -7cc Flat Top, Set/8, DSS-K1-6120-4160New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.160" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &m...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.160" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6120-4160
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.180" Bore, -18cc Dish Top, Set/8, DSS-K1-6125-4180New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.180" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.180" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6125-4180
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.210" Str., 4.180" Bore, -7cc Flat Top, Set/8, DSS-K1-6120-4180New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.180" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &m...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.180" Bore / 4.210" Stroke
1.48" Compression Height
0.98" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6120-4180
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.120" Bore, -18cc Dish Top, Set/8, DSS-K1-6135-4120New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.120" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging ...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.120" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6135-4120
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.120" Bore, -7cc Flat Top, Set/8, DSS-K1-6130-4120New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.120" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.120" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6130-4120
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.125" Bore, -18cc Dish Top, Set/8, DSS-K1-6135-4125New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.125" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging ...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.125" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6135-4125
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.125" Bore, -7cc Flat Top, Set/8, DSS-K1-6130-4125New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.125" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.125" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6130-4125
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.150" Bore, -18cc Dish Top, Set/8, DSS-K1-6135-4150New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.150" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging ...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.150" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6135-4150
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.150" Bore, -7cc Flat Top, Set/8, DSS-K1-6130-4150New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.150" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.150" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6130-4150
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.160" Bore, -18cc Dish Top, Set/8, DSS-K1-6135-4160New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.160" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging ...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.160" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6135-4160
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.160" Bore, -7cc Flat Top, Set/8, DSS-K1-6130-4160New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.160" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.160" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6130-4160
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.180" Bore, -18cc Dish Top, Set/8, DSS-K1-6135-4180New
DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.180" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging ...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-18cc Dish Top
4.180" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6135-4180
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.250" Str., 4.180" Bore, -7cc Flat Top, Set/8, DSS-K1-6130-4180New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.180" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.180" Bore / 4.250" Stroke
1.285" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6130-4180
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.375" Str., 4.120" Bore, -22cc Dish Top, Set/8, DSS-K1-6146-4120New
DSS 1-FX Series Forged Pistons — Set of 8
-22cc Dish Top
4.120" Bore / 4.375" Stroke
1.222" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging ...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-22cc Dish Top
4.120" Bore / 4.375" Stroke
1.222" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
Item #: DSS-K1-6146-4120
Condition: New
Ships in 7-10 Business Days
Price: $1,029.95
DSS 1-FX Forged Piston and Ring Kit, Pontiac 400, 4.375" Str., 4.120" Bore, -7cc Flat Top, Set/8, DSS-K1-6140-4120New
DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.120" Bore / 4.375" Stroke
1.222" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging &...
Description: DSS 1-FX Series Forged Pistons — Set of 8
-7cc Flat Top
4.120" Bore / 4.375" Stroke
1.222" Compression Height
0.99" Pins Included
1.2 / 1.2 / 3.0mm DSS Ring Set Included
4032 forging...More Details »
The 428 uses the same nominal bore as a 400, so the overbore sizes line up the way you would expect.
Standard 4.120"
The factory bore. Both the Keith Black and Icon listings for the 428 reference a 4.120" stock bore.
.030" over (4.150"), .040" over (4.160"), .060" over (4.180")
The three common rebuild sizes, stocked in Keith Black hypereutectic and Icon forged sets of eight.
4.155", 4.181" and 4.200"
The sizes the Butler/Ross Quick Ship and DSS forged stroker pistons are listed for, on blocks that have been sonic tested to support them.
2. Stock 4.000" stroke rebuild
This is the path most 428 owners are on, and it is the one place the 428 genuinely differs from a 400.
Keith Black -6cc flat top
Hypereutectic 390 alloy with 16 percent silicon, diamond-machined skirt, spiral lock rings, listed for the 428 at 4.000" stroke in .030", .040" and .060" over. Designed for 14 degree heads, 1967 and later. Butler lists a matching piston and ring set version as well.
Icon -10cc dish
Forged 2618 with a D-shaped dish, a 1.595" compression height on the 4.000" stroke, .980" pin, 1/16", 1/16", 3/16" ring grooves, press-fit or floating. Butler shows it near 10.9:1 with a 71cc chamber, 9.4:1 at 87cc and 8.7:1 at 96cc.
DSS forged at 4.000"
A -7cc flat top and a -14cc dish, both at 1.585" compression height on a 6.625" rod with a 1.2, 1.2, 3.0mm ring pack.
3. Stroking a 428 past 4.000"
4.210" stroke
DSS lists a -18cc dish at 1.480" compression height. Butler/Ross Quick Ship covers this stroke at a 4.181" bore.
4.250" stroke
Compression height drops to 1.285" on the DSS dish, which moves to a 6.800" rod and a .990" pin. Butler/Ross Quick Ship flat tops and milled dish tops are stocked at 4.150", 4.155", 4.160" and 4.181" bores for this stroke at a 1.295" compression height.
4.500" stroke
DSS lists a -24cc dish at 1.160" compression height. At that stroke the dish volume is doing most of the work of keeping compression sane.
Butler milled dishes
The Quick Ship dish forgings arrive at Butler as thick flat tops and get CNC finished in house to the dish volume your chamber calls for, rather than forcing you to pick the nearest off-the-shelf number.
4. Heads, rings and the fitment notes that matter
Head style
Icon lists its 428 pistons for OE or Edelbrock style heads with a centered pin. The Keith Black flat top is cut for 14 degree heads from 1967 on.
Compression target
Butler recommends no more than 9.5:1 on cast iron heads and no more than 10.5:1 on aluminum heads for pump gas. Give the counter your chamber cc and the dish choice follows.
Rod clearance
Some stock rods need to be narrowed and the balance pad removed to clear the inside of the pistons. Butler flags this on both the Icon and DSS listings.
Early blocks and power adders
Ross builds an oil ring support version of the -8cc flat top for early blocks with deep notches and for nitrous or boost applications.
Rings
Order the ring set to the finished bore, not the nominal overbore. Quick Ship flat tops list pins and rings as not included; the milled dish versions include pins only.
The short version: on a 428, decide whether you are keeping the 4.000" stroke or going past it, then let the compression height and dish volume fall out of that. Butler can confirm the combination before anything gets machined.
Not sure what your Pontiac needs?
Call our tech team at 866-762-7527. Tell us your engine, heads, car, and power goal, and we will put the parts together as one combination that works.