Keith Black KB172.030 Chevy 377/400 Flat Top Pistons .030 Over
377 Chevy Small Block V8, 400 Chevy Small Block V8, Flat Top w/ 2 valve reliefs Piston Style
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.
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").
- 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
Ring Style Chart (GIF)
Item Details(377) C/R 58cc=11.5, 64cc=10.7, 76cc=9.4
(400) C/R 58cc=12.3, 64cc=11.4, 76cc=10.1
Piston/Pin Weight: 580 g
Rod Length: 5.7(377), 5.565(400)
Ring Style: A
- Comp Height 5.565" Rod - 1.561
- Comp Height 5.7" Rod - 1.433
- Comp Height 6.0" Rod - 1.13
- Pin Diameter - 0.9272
474-172 Instructions (PDF)
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
More Like This
KB Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 Rod
KB Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod
KB Chevy 400 Hypereutectic Pistons, .100 Dome, 5.7 Rod
Keith Black KB193.030 Dished 5.7 Rod Chevy 350 Hypereutectic Pistons
KB Chevy 383 Hypereutectic Pistons, .100 Dome, 5.7 Rod
KB Chevy 350 Hypereutectic Pistons, .200 Dome, 5.7 Rod
Keith Black KB182.030 Chevy 377/400 .150 Dome Pistons .030 Over
KB Claimer Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
KB Chevy 383 Hypereutectic Pistons, Dish, 5.7 Inch Rod
Q & A
Learn about the importance of getting the chain tension set correctly, and why it is critical that we get it as near perfect as we can. Walkthrough a basic procedure that effectively and consistently gets the chain tension set properly every time.
Check out this helpful piston ring style chart.
Learn how to identfy motors for your LS Swap. In this guide we cover generation 4 small block engines and some of the cheaper options for more power.
Follow this step by step guide on how to install adjustable LS motor mounts to set your engine location exactly where you want it.
Professional insight on some useful crate engine tools that will improve your engine building experience.
Trying to decide which power plant to use in your latest project? Here's a quick guide of modern V8 engines for hot rodders to consider.
In this Tech Tip, John discusses LT1 rotating assembly options for a customer looking to build a solid autoX, drag, and occasional strip powerplant for his Firebird.