Keith Black KB182.030 Chevy 377/400 .150 Dome Pistons .030 Over

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

• 390 Hypereutectic alloy
• Fully machined crowns and valve reliefs
• Drilled oil drain backs
• Full floating wrist pins
• Triple wound spiral locks
• Reflective alloy allows 2% power increase
• Quench dome technology minimizes deterioration
• Zero deck quench designs
• Lightweight wrist pins

For Chevy 377 c.i. (4.125" bore x 3.48" stroke x 5.7" rod) and Chevy 400 c.i. (4.125" bore x 3.75" stroke x 5.565").  . 

Item Details

(377) C/R 58cc=13.2, 64cc=12.1, 76cc=10.5
(400) C/R 58cc=14.1, 64cc=13.0, 76cc=11.2
Piston/Pin Weight: 605 g
Rod Length: 5.7(377), 5.565(400)
Ring Style: C

-040 is Garage Sale clearance priced.

474-182 Instructions (PDF)

Ring Style Chart (GIF)

• Comp Height 5.7" Rod -  1.561
• Comp Height 6.0" Rod -  1.261
• Pin Diameter -  0.9272