JE Pistons

305 Series Piston Kit

Part Number 393803 (155626177)

UPC: 193564563507

Package contents: 1 Each per Box

Unavailable

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 23 Degree Small Block Chevy Engines 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

Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
Designed specifically for 23 Degree Small Block Chevy Engines To provide optimized performance durability
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.
Contact Reduction: Reduce the amount of contact area against the cylinder wall when the piston "Rocks over". Contact reduction also serves to disrupt the flame travel into the crevice area causing a reduction in detonation.
Smooth Crown Finish: Deburs all areas around the valve pocket and dome area, to reduces stress risers and prevent hot spots.
Made 100% in the USA
Includes high-quality wrist pins, and locks
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

Specifications

2nd Groove Width	0.044 in
3D Undercrown Milling	No
Accumulator Groove	No
Anodize Top Ring Groove	No
Bore Diameter	4.055 in
Combo 2	No
Compression Height	1.56 in
Compression Ratio	0.42013888888889
Connecting Rod Length	5.700 IN
Contact Reduction	Yes
Country Of Origin	USA
Cylinder Head	ENG QUEST 23
Double Pin Oilers	No
DVGP	No
Econo Undercrown Milling	No
EN Plating	No
Engine	Small Block
Engine Detail	Small Block
Engine Displacement	15- 350 Small block
Engine Family	Small Block
Engine Stroke	3.480 in
Engine Type	ICE
Exhaust Angle	22
Exhaust Depth	S
Exhaust Diameter	1.800
Forging Type	FSR
Gas Distribution	No
Intake Angle	22
Intake Depth	.280 in
Intake Diameter	2.250 in
Lateral Gas Ports	No
Make	Chevrolet
Mill Undercrown	No
Oil Groove Width	0.11900 in
Pin Fit	Yes
Piston Average Weight	391
Piston Head Type	Flat Top
Piston Material	2618
Piston Quantity	8
Piston Series	JE Pistons
Piston To Wall Clearance	-0.005999 in
Piston Volume	-3.80 cc
Product Market	Domestic
Product Type	Engine Piston Kit
Skirt Coat	No
Smooth Crown Finish	Yes
Thermal Crown	No
Top Groove Width	0.04400 in
Tuff Skirt	No
Ultra Dome	No
Ultra Groove	No
Ultra Groove Plus Gas Port	No
Vertical Gas Ports	No
Wrist Pin Length	2.250 in
Wrist Pin Material	5115 Low Carbon Steel, Case Hardened
Wrist Pin Outer Diameter	0.927 in
Wrist Pin Wall Thickness	0.150 in

Warranty

30 Months

About JE Pistons

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.