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427 Chevy Pistons

Icon Forged Pistons

Icon Forged Chevrolet 427 Pistons

High performance 427 pistons made by Icon (the forged piston side of KB Pistons) are premium quality pistons that are available for a very reasonable price. We have these forged piston sets available in a wide range of sizes including standard bore and many popular oversizes. If you are building a 427 Chevy engine and are looking for improved acceleration, efficiency and strength then these pistons are the perfect choice for many applications.

These 427 Chevy pistons can be used in high performance street cars, serious street and strip cars as well as dedicated racing engines. The large variety of piston sizes, styles and compression ratios enables you to get the best specifications pistons for your exact application.

427 Chevy Engine Specs

For reference the original stock specifications were:

  • Engine block deck height 9.800 inches
  • Cylinder bore standard size 4.125 inches
  • Crankshaft stock stroke 3.760
  • Connecting rod length 6.135
  • Wrist pin diameter .990

427 Forged Pistons Feature:

  • Wrist pins and pin fitting included
  • Accumulator groove included
  • Double pin oilers are force fed from the oil ring
  • Large valve relief depths and diameters allow for high lift cams and oversized valves
  • Piston sets are balanced to +/- 1 gram
  • Pin lock grooves included to ease lock removal
  • Fully CNC Machined
  • Double spiral locks included
  • Piston tops are polished and the quench area finished to promote maximum combustion efficiency for more complete fuel burn, providing maximum power
  • Piston to valve clearances designed with input from performance engine builders to provide maximum compression and performance
  • Precision wrist pin hole diameter and finish to provide superior pin lubrication at higher RPM’s
  • Unique skirt designs provide reduced friction while maintaining piston stability in the cylinder
  • Icon Premium series forged pistons are made from ultra heavy duty 2618 alloy.

427 Forged Pistons for use in Chevrolet 427 Engine

  • Stroke These pistons are for use with a 3.760 inch stroke crank, OEM or aftermarket
  • Connecting Rod Length * see notes
  • Wrist Pin Size .990 x 2.750"
  • Ring grooves * see notes
  • CH Compression Height This is the measurement from the centerline of the piston pin bore to the top flat part of the piston
  • Wt Piston weight in grams followed by wrist pin weight in grams
  • ccs displacement of dome, or dish, and valve reliefs, measured in ccs
  • CR Compression ratio estimates based on a .030 oversize, -.041 deck clearance and .020 compressed head gasket
  • Bore Size Finished cylinder bore size, in inches, that piston is designed for

What is Included?

  • Piston set includes 8 pistons,8 wrist pins and locks
  • Piston and ring kit includes 1 Complete engine piston set and 1 piston ring set

Closed Chamber Chevy 427 Dome Top Pistons use with 6.135 Length Rod

Icon IC9950 427 Piston

IC9950

NOTES:

Centered Pin. Closed Chamber Design.... 5/64 5/64 3/16 Ring Groves....6.135 length connecting rod

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
96.5cc 105cc 119cc
1.765 655 / 141 10.2 10.3 9.5 8.5 4.250 standard IC9950
$0.00
Contact us for availability!
IC9950 KTM

Add To Cart

4.280 + .030 over

IC9950 30
$0.00
Contact us for availability!
IC9950 KTM30

Add To Cart
4.290 + .040 over IC9950 40
$0.00
Contact us for availability!
IC9950 KTM40

Add To Cart

4.310 + .060 over

IC9950 60
$0.00
Contact us for availability!
IC9950 KTM60

Add To Cart
4.320 + .070 over IC9950 70
$0.00
Contact us for availability!
IC9950 KTM70

Add To Cart
4.350 + .100 over IC9950 100
$0.00
Contact us for availability!
IC9950 KTM100

Add To Cart

Chevrolet 427 Closed Chamber Dome Pistons use with 6.135 Length Connecting Rod

Icon IC9958 427 Forged Pistons

IC9958

NOTES:

Centered Pin. Closed Chamber Design... 5/64 5/64 3/16 Ring Groves.... 6.135 length connecting rod

CH Wt ccs

CR with head chamber of:

Bore Size Piston Set Piston and Ring Kit
96.5cc 105cc 119cc
1.765 706 / 141 28.2 12.4 11.3 9.8 4.250 standard IC9958
$0.00
Contact us for availability!
IC9958 KTM

Add To Cart

4.280 + .030 over

IC9958 30
$0.00
Contact us for availability!
IC9958 KTM30

Add To Cart
4.290 + .040 over IC9958 40
$0.00
Contact us for availability!
IC9958 KTM40

Add To Cart

4.310 + .060 over

IC9958 60
$0.00
Contact us for availability!
IC9958 KTM60

Add To Cart
4.320 + .070 over IC9958 70
$0.00
Contact us for availability!
IC9958 KTM70

Add To Cart
4.350 + .100 over IC9958 100
$0.00
Contact us for availability!
IC9958 KTM100

Add To Cart

427 Open Chamber Dome Pistons | Use with 6.135 Length Connecting Rod

Icon IC9917 427 Chevy Pistons

IC9917

Notes:

Centered pin. Open Chamber Design...5/64 5/64 3/16 Ring Grooves....6.135 length connecting rod

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
119cc
1.765 751 / 141 41 11.1 4.250 standard IC9917
$0.00
Contact us for availability!
IC9917 KTM

Add To Cart

4.280 + .030 over

IC9917 30
$0.00
Contact us for availability!
IC9917 KTM30

Add To Cart
4.290 + .040 over IC9917 40
$0.00
Contact us for availability!
IC9917 KTM40

Add To Cart

4.310 + .060 over

IC9917 60
$0.00
Contact us for availability!
IC9917 KTM60

Add To Cart
4.320 + .070 over IC9917 70
$0.00
Contact us for availability!
IC9917 KTM70

Add To Cart
4.350 + .100 over IC9917 100
$0.00
Contact us for availability!
IC9917 KTM100

Add To Cart

427 Chevy Flat Top Pistons use with 6.135 Length Connecting Rod

Icon IC776 427 Forged Piston

IC776

Notes:

Centered Pin....1/16 1/16 3/16 Ring Grooves....6.135 connecting rod length.

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
96.5cc 108cc 119cc
1.765 629 / 141 -3 9.7 8.4 7.7 4.250 standard IC776
$0.00
Contact us for availability!
IC776 KTD

Add To Cart

4.280 + .030 over

IC776 30
$0.00
Contact us for availability!
IC776 KTD30

Add To Cart
4.290 + .040 over IC776 40
$0.00
Contact us for availability!
IC776 KTD40

Add To Cart

4.310 + .060 over

IC776 60
$0.00
Contact us for availability!
IC776 KTD60

Add To Cart
4.320 + .070 over IC776 70
$0.00
Contact us for availability!
IC776 KTD70

Add To Cart
4.350 + .100 over IC776 100
$0.00
Contact us for availability!
IC776 KTD100

Add To Cart

427 Pistons Flat Top | Use with 6.385 Length Connecting Rod

Icon IC784 427 Chevrolet Forged Piston

IC784

Notes:

Centered Pin....1/16 1/16 3/16 Ring Grooves....6.385 connecting rod length.

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
96.5cc 108cc 119cc
1.520 582 / 141 -3 9.7 8.4 7.7 4.250 standard IC784
$0.00
Contact us for availability!
IC784 KTD

Add To Cart

4.280 + .030 over

IC784 30
$0.00
Contact us for availability!
IC784 KTD30

Add To Cart
4.290 + .040 over IC784 40
$0.00
Contact us for availability!
IC784 KTD40

Add To Cart

4.310 + .060 over

IC784 60
$0.00
Contact us for availability!
IC784 KTD60

Add To Cart
4.320 + .070 over IC784 70
$0.00
Contact us for availability!
IC784 KTD70

Add To Cart
4.350 + .100 over IC784 100
$0.00
Contact us for availability!
IC784 KTD100

Add To Cart

427 Dome Top Pistons | Use with 6.135 Length Connecting Rod

IC777 Cheverlot 427-V8 Forged Piston

IC777

Notes:

Closed Chamber Design. Centered Pin. Edelbrock and original equipment Heads....1/16 1/16 3/16 Ring Grooves 6.135 connecting rod length

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
96.5cc 108cc 119cc
1.765 671 / 141 18 11.9 9.9 9.0 4.250 standard IC777
$0.00
Contact us for availability!
IC777 KTD

Add To Cart

4.280 + .030 over

IC777 30
$0.00
Contact us for availability!
IC777 KTD30

Add To Cart
4.290 + .040 over IC777 40
$0.00
Contact us for availability!
IC777 KTD40

Add To Cart

4.310 + .060 over

IC777 60
$0.00
Contact us for availability!
IC777 KTD60

Add To Cart
4.320 + .070 over IC777 70
$0.00
Contact us for availability!
IC777 KTD70

Add To Cart
4.350 + .100 over IC777 100
$0.00
Contact us for availability!
IC777 KTD100

Add To Cart

Dome Top 427 Chevy Pistons | Use with 6.385 Length Connecting Rod

Icon IC786 427 dome top piston

IC786

Notes:

Closed Chamber Design. Centered Pin. Edelbrock and original equipment Heads...1/16 1/16 3/16 Ring Grooves 6.385 Connecting Rod Length

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
96.5cc 108cc 119cc
1.520 623 / 141 12 11.1 9.4 8.6 4.250 standard IC786
$0.00
Contact us for availability!
IC786 KTD

Add To Cart

4.280 + .030 over

IC786 30
$0.00
Contact us for availability!
IC786 KTD30

Add To Cart
4.290 + .040 over IC786 40
$0.00
Contact us for availability!
IC786 KTD40

Add To Cart

4.310 + .060 over

IC786 60
$0.00
Contact us for availability!
IC786 KTD60

Add To Cart
4.320 + .070 over IC786 70
$0.00
Contact us for availability!
IC786 KTD70

Add To Cart
4.350 + .100 over IC786 100
$0.00
Contact us for availability!
IC786 KTD100

Add To Cart

427 Dome Pistons | Use with 6.385 Length Connecting Rod

Icon IC788 427 Chevy High Compression Piston

IC788

Notes:

Closed Chamber Design. Centered Pin. Edelbrock and original equipment Heads....1/16 1/16 3/16 Ring Grooves 6.385 Connecting Rod Length

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
96.5cc 108cc 119cc
1.520 627 / 141 20 12.1 10.1 9.2 4.250 standard IC788
$0.00
Contact us for availability!
IC788 KTD

Add To Cart

4.280 + .030 over

IC788 30
$0.00
Contact us for availability!
IC788 KTD30

Add To Cart
4.290 + .040 over IC788 40
$0.00
Contact us for availability!
IC788 KTD40

Add To Cart

4.310 + .060 over

IC788 60
$0.00
Contact us for availability!
IC788 KTD60

Add To Cart
4.320 + .070 over IC788 70
$0.00
Contact us for availability!
IC788 KTD70

Add To Cart
4.350 + .100 over IC788 100
$0.00
Contact us for availability!
IC788 KTD100

Add To Cart

Chevrolet 427 High Compression Pistons | 6.135 Length Connecting Rod

icon IC988 Chevy 427 Open Chamber Piston

IC988

Notes:

Hollow Dome. Centered Pin. Will Fit Afr, Rhs, Trick Flow, World, Edelbrock, Brodix, Dart & original equipment Chevy Open Chamber Heads That Are 118cc's Or Larger. Always Check Piston To Chamber & Valves To Assure You Have Adequate Operating Clearance....1/16 1/16 3/16 Ring Grooves ....6.135 connecting rod length.

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
119c
1.765 703 / 141 38 10.8 4.250 standard IC988
$0.00
Contact us for availability!
IC988 KTD

Add To Cart

4.280 + .030 over

IC988 30
$0.00
Contact us for availability!
IC988 KTD30

Add To Cart
4.290 + .040 over IC988 40
$0.00
Contact us for availability!
IC988 KTD40

Add To Cart

4.310 + .060 over

IC988 60
$0.00
Contact us for availability!
IC988 KTD60

Add To Cart
4.320 + .070 over IC988 70
$0.00
Contact us for availability!
IC988 KTD70

Add To Cart
4.350 + .100 over IC988 100
$0.00
Contact us for availability!
IC988 KTD100

Add To Cart
4.375 + .125 over IC988 125
$0.00
Contact us for availability!
IC988 KTD125

Add To Cart

High Compression Dome 427 Pistons | 6.135 Length Connecting Rod

Icon IC998 427 Piston

IC998

Notes:

Hollow Dome. Centered Pin. Will Fit Afr, Rhs, Trick Flow, World, Edelbrock, Brodix, Dart & original equipment Chevy Open Chamber Heads That Are 118cc's Or Larger. Always Check Piston To Chamber & Valves To Assure You Have Adequate Operating Clearance....1/16 1/16 3/16 Ring Grooves...6.135 connecting rod length.

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
119c
1.765 718 / 141 43 11.4 4.250 standard IC998
$0.00
Contact us for availability!
IC998 KTD

Add To Cart

4.280 + .030 over

IC998 30
$0.00
Contact us for availability!
IC998 KTD30

Add To Cart
4.290 + .040 over IC998 40
$0.00
Contact us for availability!
IC998 KTD40

Add To Cart

4.310 + .060 over

IC998 60
$0.00
Contact us for availability!
IC998 KTD60

Add To Cart
4.320 + .070 over IC998 70
$0.00
Contact us for availability!
IC998 KTD70

Add To Cart
4.350 + .100 over IC998 100
$0.00
Contact us for availability!
IC998 KTD100

Add To Cart
4.375 + .125 over IC998 125
$0.00
Contact us for availability!
IC998 KTD125

Add To Cart

427 Forged Dome Pistons | 6.385 Length Connecting Rod

Icon IC989 Forged 427 Pistons

IC989

Notes:

Hollow Dome. Centered Pin. Will Fit Afr, Rhs, Trick Flow, World, Edelbrock, Brodix, Dart & original equipment Chevy Open Chamber Heads That Are 118cc's Or Larger. Always Check Piston To Chamber & Valves To Assure You Have Adequate Operating Clearance....1/16 1/16 3/16 Ring Grooves...6.385 connecting rod length.

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
119c
1.520 655 / 141 38 10.8 4.250 standard IC989
$0.00
Contact us for availability!
IC989 KTD

Add To Cart

4.280 + .030 over

IC989 30
$0.00
Contact us for availability!
IC989 KTD30

Add To Cart
4.290 + .040 over IC989 40
$0.00
Contact us for availability!
IC989 KTD40

Add To Cart

4.310 + .060 over

IC989 60
$0.00
Contact us for availability!
IC989 KTD60

Add To Cart
4.320 + .070 over IC989 70
$0.00
Contact us for availability!
IC989 KTD70

Add To Cart
4.350 + .100 over IC989 100
$0.00
Contact us for availability!
IC989 KTD100

Add To Cart
4.375 + .125 over IC989 125
$0.00
Contact us for availability!
IC989 KTD125

Add To Cart

427 Dome Pistons | 6.385 Length Connecting Rod

Icon IC999 High Compression Pistons

IC999

Notes:

Hollow Dome. Centered Pin. Will Fit Afr, Rhs, Trick Flow, World, Edelbrock, Brodix, Dart & original equipment Chevy Open Chamber Heads That Are 118cc's Or Larger. Always Check Piston To Chamber & Valves To Assure You Have Adequate Operating Clearance....1/16 1/16 3/16 Ring grooves...6.385 connecting rod length.

CH Wt ccs CR with head chamber of: Bore Size Piston Set Piston and Ring Kit
119c
1.520 668 / 141 43 11.4 4.250 standard IC999
$0.00
Contact us for availability!
IC999 KTD

Add To Cart

4.280 + .030 over

IC999 30
$0.00
Contact us for availability!
IC999 KTD30

Add To Cart
4.290 + .040 over IC999 40
$0.00
Contact us for availability!
IC999 KTD40

Add To Cart

4.310 + .060 over

IC999 60
$0.00
Contact us for availability!
IC999 KTD60

Add To Cart
4.320 + .070 over IC999 70
$0.00
Contact us for availability!
IC999 KTD70

Add To Cart
4.350 + .100 over IC999 100
$0.00
Contact us for availability!
IC999 KTD100

Add To Cart
4.375 + .125 over IC999 125
$0.00
Contact us for availability!
IC999 KTD125

Add To Cart

427 Chevy Connecting Rods

While you are replacing your engine pistons it is a good time to also upgrade your rotating assembly by installing modern connecting rods. Why risk damage to your freshly rebuilt performance engine by installing used connecting rods that have been through who knows how many engine cycles and stress.

With the high cost of machine shop service these days you can often upgrade to far stronger modern rods for not much more than the cost of reconditioning a set of use rods.

Molnar Technologies H Beam 427 Connecting Rods

molnar technologies 400 connecting rods

Molnar Technologies H Beam rods are machined from billet 4340 steel, and then heat treated to provide improved strength. To make the rods even stronger, they are shot peened to which also increases fatigue life. All Molnar connecting rods are fitted with highly durable premium bronze bushings for use with floating pin type pistons. Each rod set includes ARP fasteners, moly lubricant and installation guidelines.

All Molnar rods are finished in the United States at the Molnar Technologies shop in Michigan. Critical rod dimensions are are held to very precise tolerances of +/- .0001 of an inch, which is the tightest tolerance you will find in the performance and racing aftermarket.

  • Description and Length Engine model that rod is made to for and length of the rod, as measured center to center, in inches.
  • Weight Weight in grams, of one complete connecting rod assembly
  • Bolt Size Bolt dimensions in inches, Rods come with ARP2000 fasteners installed
  • Rod Pin Size Crank rod journal diameter
  • Pin Size Piston pin diameter, in inches
  • BE Width Width of the crankshaft end of one rod
  • PE Width Width of the piston end of one rod
  • Part Number Molnar Technologies rod set part number. Set includes 8 connecting rods
Description and Length Weight Bolt Size Rod Pin Size Pin Size BE Width PE Width Part Number
6.135 long Big Block Chevy, Stock length 717 7/16 2.200 .990 0.992 1.065

CH6135VTB8-A


Add To Cart

6.135 long Big Block Chevy, Stock length

NHRA Stock Approved

782 7/16 2.200 .990 0.992 1.065 CH6135VTB-N8-A

Add To Cart
6.385 long Big Block Chevy, .250 longer than stock 729 7/16 2.200 .990 0.992 1.065 CH6385VTB8-A

Add To Cart

If you do not see a set of 427 pistons with the specs you need, please contact us. We can provide custom forged pistons for most any application.

Click here to return to the main Icon forged pistons catalog index page > Icon Pistons Catalog

 

 

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