12405 Diamond Pistons Chevy 24/26° Forged Dish 4.500 Bore

BB Chevy, Bore 4.500, Stroke 4.000, Rod Length 6.135, Dish -12cc, Set of 8 Pistons, Made to order

$1,175.47

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Description

Forged Diamond Pistons for Big Block Chevy Forced induction applications are designed to fit open or closed chamber cylinder heads. Increased crown thickness to .260". Pistons will accept 2.300" diameter intake valves and 1.880" exhaust valves. Compression Ratios figured for .020" deck height @ 9.800" and 10.200". Standard 1/16" x 1/16" x 3/16" ring package (Rings not Included). Premium 8620 wrist pins included. Gasket volume - 9.7cc to 10.9cc, top ring down .340" from piston crown. Valve relief depths .310" intake.

Compression Ratio with 112cc Heads 8.4:1
Compression Ratio with 118cc Heads 8.1:1
Advertised piston weight 657 grams
Made to order

Specifications

More Information
CNC Part Number	DRP-12405
Price	$1,175.47
Manufacturer's Part Number	12405
Brands	Diamond
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy BB
Bore Size	4.500
Crankshaft Stroke	4.000
Rod Length	6.135
Piston Type	Dish
Compression Height	1.645
Piston Material	2618 Forged
Piston Ring Size	1/16 1/16 3/16
Wrist Pin Size	0.990
Custom Notices	⚠ PROP 65 WARNING

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