Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®

Search

Canadian Leaf

Icon Chevy 421 Forged Pistons, .218 Dome, 6.0 Rod

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Sold in Quantity:
Set
Piston Diameter:
-
Stroke:
3.875
Wrist Pin Diameter:
.927
Piston Ring Style:
E
Connecting Rod Length:
6.000"
Piston Weight:
427
Wrist Pin Weight:
102
Piston Style:
Dome
Dome Height:
.218
Piston Material:
Forged Aluminum
Garage Sale:
No
Icon Chevy 421 Forged Pistons, .218 Dome, 6.0 RodIcon Chevy 421 Forged Pistons, .218 Dome, 6.0 Rod
Icon Chevy 421 Forged Pistons, .218 Dome, 6.0 Rod

Click image to enlarge

Speeday Motors Logo
X
Icon Chevy 421 Forged Pistons, .218 Dome, 6.0 Rod

Details

Reviews

Q & A

What's in the Box

Formerly KB Forged Pistons. Starting with 2618 alloy heat treated to high strength T-6 specifications, these give you the best value for your money. Exclusive V-rib adds strength without adding weight but allows maximum cooling.

  • High ductility 2618 alloy
  • Dual forced pin oiling on most applications
  • Lateral gas porting on higher compression ratios
  • Fully machined with deep valve pockets
  • Second land accumulator grooves
  • Top land mini groove technology
  • Diamond finished skirts
  • Triple wound spiral locks

For Chevy 421 c.i. (4.125" bore x 3.875" stroke). Use Style E rings (1.5mm, 1.5mm, 3.0mm).

Ring Style Chart (GIF)

474-965 Instructions (PDF)

Item Details

Piston Weight: 427 g. Rod Length: 6.0"
Bore & Stroke: 4.125 x 3.875
Ring Style: E

You may also be interested in:

Icon Chevy 421 Forged Pistons, Flat Top, 6.0 Rod
                        

Formerly KB Forged Pistons. Starting with 2618 alloy heat treated to high strength T-6 specifications, these give you the best value for your money. Exclusive V-rib adds strength without adding weight but allows maximum cooling.

For Chevy 421 c.i. (4.125" bore x 3.875" stroke). Use Style E rings (1.5mm, 1.5mm, 3.0mm).

  • High ductility 2618 alloy
  • Dual forced pin oiling on most applications
  • Lateral gas porting on higher compression ratios
  • Fully machined with deep valve pockets
  • Second land accumulator grooves
  • Top land mini groove technology
  • Diamond finished skirts
  • Triple wound spiral locks

Ring Style Chart (GIF)

474-966 Instructions (PDF)

Total Seal Style E Conventional Style Piston Rings, .025 OS, 1.5/3mm
                        

For years Total Seal has been leader in performance ring technology. These conventional style ring sets featuring a plasma moly ductile iron top ring, cast second and a 3-piece oil ring.  They have a 1.5mm top ring 1.5mm second ring and a 3mm oil control ring.  Fit many aftermarket piston including Mahle.

Ring Style Chart (GIF)

Total Seal MG2012-025 Maxseal Gapless Top Piston Rings, 4.125 Bore, E
                        

For years, Total Seal has led the field in piston ring technology. These file fit Maxseal sets feature ductile iron gapless top rings, conventional 2nd rings, & standard tension oil rings.

Ring Style Chart (GIF)