Chrevrolet Big Block 632 Nitrous Series Flat Top Piston Kit

Part Number 293520 (132583773)

UPC: 193564030085

Package contents: 1 Each per Box

$1,283.99 FREE SHIPPING

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Description

JE Auto forged pistons from JE Pistons are the result of over 75 years of industry leading experience extended to our range of premium forged pistons for Chevrolet 632, 4.625 Bore, Flat, Set of 8 JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From drift track to drag strip, JE Pistons’ performance is proven in victory lane time and time again. Equipped with the following custom level features

JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE Pistons 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.

Features & benefits

Accumulator Groove: A specialty groove between the top and second ring provides added volume for blow-by gases. This helps reduce pressure between the rings, improving top ring seal and minimizing ring flutter at high cylinder pressures.
Vertical Gas Ports: Machined gas ports channel combustion pressure behind the top ring for improved cylinder sealing and reduced blow-by under high load. Common in drag racing applications where maximum ring seal is critical.
Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
Pin Fit: The pin bore is precision honed to attain an exact pin clearance. Clearances typically range from .0003 to .0010 between the wrist pin and pin bore.
Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
Double Pin Oilers: Deliver twice the amount of oil to the wrist pin as compared to the standard single pin oiler.
Designed specifically for Chevrolet 632, 4.625 Bore, Flat, Set of 8 To provide optimized performance durability
Includes high-quality wrist pins, and locks
Made 100% in the USA

Specifications

2nd Groove Width	0.044 in
3D Undercrown Milling	No
Accumulator Groove	Yes
Anodize Top Ring Groove	No
Bore Diameter	4.625 in
Combo 2	No
Compression Height	1.140 in
Compression Ratio	0.62847222222222
Connecting Rod Length	6.660 IN
Contact Reduction	No
Country Of Origin	USA
Cylinder Head	BIG CHIEF 12 DEG/14 DEG
Double Pin Oilers	Yes
DVGP	No
Econo Undercrown Milling	No
EN Plating	No
Engine	Big Block
Engine Detail	BIG CHIEF 12 DEG/14 DEG
Engine Family	Big Block
Engine Stroke	4.750 in
Engine Type	ICE
Exhaust Angle	6
Exhaust Depth	.085
Exhaust Diameter	2.150
Forging Type	Round
Gas Distribution	No
Intake Angle	23
Intake Depth	.220 in
Intake Diameter	2.170 in
Lateral Gas Ports	No
Make	Chevrolet
Mill Undercrown	No
Oil Groove Width	0.21800 in
Oil Rail Support Required Part Number	Yes
Oil Rail Support Required. Part Number:	4600-203
Oil Ring Thickness	0.218 in
Pin Fit	Yes
Piston Average Weight	584 gr
Piston Head Type	Flat
Piston Material	2618
Piston Quantity	8
Piston Series	JE Pistons
Piston To Wall Clearance	-0.005499 in
Piston Volume	-7.30 cc
Product Market	Domestic
Product Type	Engine Piston Kit
Ring Set Included	No
Second Compression Ring Thickness	0.0440 in
Skirt Coat	No
Smooth Crown Finish	No
Thermal Crown	No
Top Compression Ring Thickness	0.0435 in
Top Groove Width	0.04350 in
Tuff Skirt	No
Ultra Dome	No
Ultra Groove	No
Ultra Groove Plus Gas Port	No
Vertical Gas Ports	Yes
Wrist Pin Length	2.930 in
Wrist Pin Material	5115 Low Carbon Steel, Case Hardened
Wrist Pin Outer Diameter	0.990 in
Wrist Pin Wall Thickness	0.180 in

Warranty

30 Months

California residents

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Carb Status

California carb status to be completed