11849 Diamond Nitrous Pistons SB Chevy 423 23° Dome 4.165 Bore

Fits Small Block Chevy 421 with 23° heads, 4.165 Bore, 3.875 Stroke, 5.850 Rod Length, 9cc Dome, Set of 8 Pistons

$1,388.66

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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.

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Description

Diamond Pistons are some of the best aftermarket pistons on the market. Trust your new engine with a set of Diamond Pistons

3D milling on piston crowns for a ready to install finish

Designed to work with most aftermarket 23° cylinder heads

Top ring down dimensions: 0.250"-0.300"

Ratios figured for 0.040 head gasket @ 9.000 deck

Premium 0.043 x 1/16 x 3/16 ring package (Not Included)

1.000CD & 1.062CD use premium 0.043 x 0.043 x 1/16 ring package

Vertical gasports for better ring seal

Premium H-13 0.205W wrist pins included

Valve pocket depth 0.322" intake and 0.217" exhaust

Will work with an intake valve size of 2.125" and exhaust valve size of 1.625"

Made from 2618 alloy and designed for small-medium nitrous levels (Up to 450HP)

No advertized piston weight

Crankshaft counterweights may need to be modified to clear the bottom of piston pin boss

Made to order

Compression Ratio:

58cc 14.9:1

64cc 13.7:1

70cc 12.7.1

Specifications

More Information
CNC Part Number	DRP-11849
Price	$1,388.66
Sold As	Set
Manufacturer's Part Number	11849
Brands	Diamond
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy SB
Bore Size	4.155
Crankshaft Stroke	3.875
Rod Length	5.850
Piston Type	Dome
Compression Height	1.200
Piston Material	2618 Forged
Piston Ring Size	.043 1/16 3/16
Wrist Pin Size	0.927
Custom Notices	⚠ PROP 65 WARNING

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