Part# 311977

x8 JE PISTONS with JE standard pins, and locks for (CHEVY small block LS2, LS3, LSX)

Check the part number in the auction and compare it to the spec sheet below to make sure you are choosing the correct product for your needs!

GM LS Asymmetrical FSR Flat Top
GM LS Asymmetrical FSR Flat Top 
STD Bore: 4.000" LS2 / 4.065" LS3 / 4.125 LSX 
Ring Packaged Designed for 1.2mm, 1.5mm, and 3.0mm Rings 
Note: 1.340 Compression Height Pistons utilize .945" Pin Diameter and 6.098" Rod Length. 
*** LSA & LS9 Engines require oil squirter location modification for clearance. *** 

Part #	CID	Bore	Stroke	Rod Lgth.	Block Ht.	Comp. Ht.	Head Cubic Centimeters 64cc 68cc 70cc Compression Ratio			Dome Vol.	Gram Wt.	Footnote	Oversize	Recom. Ring Set
311990	413	4.000	4.100	6.125	9.240	1.065	11.8	11.3	11.1	-5	Call	B, M, V	STD LS2	JG3108-4000-7
311991	413	4.005	4.100	6.125	9.240	1.065	11.9	11.3	11.1	-5	Call	B, M, V	.005 LS2	JG3108-4000-7
311992	414	4.010	4.100	6.125	9.240	1.065	11.9	11.4	11.1	-5	Call	B, M, V	.010 LS2	JG3108-4010-4
311993	418	4.030	4.100	6.125	9.240	1.065	12.0	11.5	11.2	-5	Call	B, M, V	.030 LS2	JG31F8-4030-2
311994	426	4.065	4.100	6.125	9.240	1.065	12.2	11.6	11.4	-5	Call	B, M, V	STD LS3	JG31F8-4070-0
311995	427	4.070	4.100	6.125	9.240	1.065	12.2	11.6	11.4	-5	Call	B, M, V	.005 LS3	JG31F8-4070-0
311996	428	4.075	4.100	6.125	9.240	1.065	12.2	11.7	11.4	-5	Call	B, M, V	.010 LS3	JG31F8-4075-5
311997	429	4.080	4.100	6.125	9.240	1.065	12.2	11.7	11.4	-5	Call	B, M, V	.015 LS3	JG31F8-4075-5
311998	438	4.125	4.100	6.125	9.240	1.065	12.5	11.9	11.6	-5	Call	B, M, V	STD LSX	JG31F8-4125-2
311999	439	4.130	4.100	6.125	9.240	1.065	12.5	11.9	11.7	-5	Call	B, M, V	.005 LSX	JG31F8-4135-2
312000	440	4.135	4.100	6.125	9.240	1.065	12.5	12.0	11.7	-5	Call	B, M, V	.010 LSX	JG31F8-4135-2
312001	445	4.155	4.100	6.125	9.240	1.065	12.6	12.0	11.8	-5	Call	B, M, V	.030 LSX	JG31F8-4155-3
312002	451	4.185	4.100	6.125	9.240	1.065	12.8	12.2	11.9	-5	Call	B, M, V	.060 LSX	JG3108-4185-3
311976	402	4.000	4.000	6.125	9.240	1.115	11.6	11.1	10.8	-5	Call	B, V	STD LS2	JG3108-4000-7
311977	403	4.005	4.000	6.125	9.240	1.115	11.6	11.1	10.8	-5	Call	B, V	.005 LSD	JG3108-4000-7
311978	404	4.010	4.000	6.125	9.240	1.115	11.6	11.1	10.9	-5	Call	B, M, V	.010 LS2	JG3108-4010-4
311979	408	4.030	4.000	6.125	9.240	1.115	11.7	11.2	11.0	-5	Call	B, M, V	.030 LS2	JG31F8-4030-2
311980	405	4.065	4.000	6.125	9.240	1.115	11.9	11.4	11.1	-5	Call	B, V	STD LS3	JG31F8-4070-0
311981	416	4.070	4.000	6.125	9.240	1.115	11.9	11.4	11.1	-5	Call	B, V	.005 LS3	JG31F8-4070-0
311982	417	4.075	4.000	6.125	9.240	1.115	11.9	11.4	11.2	-5	Call	B, M, V	.010 LS3	JG31F8-4075-5
311984	418	4.080	4.000	6.125	9.240	1.115	12.0	11.4	11.2	-5	Call	B, M, V	.015 LS3	JG31F8-4075-5
311985	427	4.125	4.000	6.125	9.240	1.115	12.2	11.6	11.4	-5	Call	B, V	STD LSX	JG31F8-4125-2
311986	429	4.130	4.000	6.125	9.240	1.115	12.2	11.7	11.4	-5	Call	B, V	.005 LSX	JG31F8-4135-2
311987	430	4.135	4.000	6.125	9.240	1.115	12.2	11.7	11.4	-5	Call	B, M, V	.010 LSX	JG31F8-4135-2
311988	434	4.155	4.000	6.125	9.240	1.115	12.3	11.7	11.5	-5	Call	B, M, V	.030 LSX	JG31F8-4155-3
311989	440	4.185	4.000	6.125	9.240	1.115	12.5	11.9	11.7	-5	Call	B, M, V	.060 LSX	JG3108-4185-3
323978	392	4.000	3.900	6.125	9.240	1.165	11.0	10.5	10.3	-5	378	V	STD LS2	JG3108-4000-7
323979	393	4.005	3.900	6.125	9.240	1.165	11.0	10.6	10.3	-5	379	V	.005 LS2	JG3108-4000-7
323980	394	4.010	3.900	6.125	9.240	1.165	11.0	10.6	10.3	-5	380	M, V	.010 LS2	JG3108-4010-4
323981	398	4.030	3.900	6.125	9.240	1.165	11.1	10.7	10.4	-5	385	M, V	.030 LS2	JG31F8-4030-2
323982	405	4.065	3.900	6.125	9.240	1.165	11.3	10.8	10.6	-5	388	V	STD LS3	JG31F8-4070-0
323983	406	4.070	3.900	6.125	9.240	1.165	11.3	10.8	10.6	-5	389	V	.005 LS3	JG31F8-4070-0
323984	407	4.075	3.900	6.125	9.240	1.165	11.3	10.8	10.6	-5	391	M, V	.010 LS3	JG3108-4075-5
323985	408	4.080	3.900	6.125	9.240	1.165	11.4	10.9	10.6	-5	395	M, V	.015 LS3	JG3108-4075-5
323986	417	4.125	3.900	6.125	9.240	1.165	11.5	11.1	10.8	-5	408	M, V	STD LSX	JG31F8-4125-2
323987	418	4.130	3.900	6.125	9.240	1.165	11.6	11.1	10.8	-5	409	M, V	.005 LSX	JG31F8-4135-2
323988	419	4.135	3.900	6.125	9.240	1.165	11.6	11.1	10.9	-5	411	M, V	.010 LSX	JG31F8-4135-2
323989	423	4.155	3.900	6.125	9.240	1.165	11.7	11.2	10.9	-5	415	M, V	.030 LSX	JG31F8-4155-3
323990	429	4.185	3.900	6.125	9.240	1.165	11.8	11.3	11.1	-5	420	M, V	.060 LSX	JG3108-4185-3
311961	364	4.000	3.622	6.125	9.240	1.304	10.6	10.1	9.9	-5	Call	V	STD LS2	JG3108-4000-7
311955	364	4.000	3.622	6.098	9.240	1.340	10.6	10.1	9.9	-5	Call	K, V	STD LS2	JG3108-4000-7
311956	365	4.005	3.622	6.098	9.240	1.340	10.6	10.1	9.9	-5	Call	K, V	.005 LS2	JG3108-4000-7
311962	365	4.005	3.622	6.125	9.240	1.304	10.6	10.1	9.9	-5	Call	V	.005 LS2	JG3108-4000-7
311963	366	4.010	3.622	6.125	9.240	1.304	10.6	10.2	9.9	-5	Call	M, V	.010 LS2	JG3108-4010-4
311957	366	4.010	3.622	6.098	9.240	1.340	10.6	10.2	9.9	-5	Call	K, M, V	.010 LS2	JG3108-4010-4
311958	370	4.030	3.622	6.098	9.240	1.340	10.7	10.2	10.0	-5	Call	K, M, V	.030 LS2	JG31F8-4030-2
311964	370	4.030	3.622	6.125	9.240	1.304	10.7	10.2	10.0	-5	Call	M, V	.030 LS2	JG31F8-4030-2
311965	376	4.065	3.622	6.125	9.240	1.304	10.9	10.4	10.2	-5	Call	V	STD LS3	JG31F8-4070-0
311959	376	4.065	3.622	6.098	9.240	1.340	10.9	10.4	10.2	-5	Call	K, V	STD LS3	JG31F8-4070-0
311960	377	4.070	3.622	6.098	9.240	1.340	10.9	10.4	10.2	-5	Call	K, M, V	.005 LS3	JG31F8-4070-0
311966	377	4.070	3.622	6.125	9.240	1.304	10.9	10.4	10.2	-5	Call	V	.005 LS3	JG31F8-4070-0
311967	378	4.075	3.622	6.125	9.240	1.304	10.9	10.4	10.2	-5	Call	M, V	.010 LS3	JG31F8-4075-5
311968	378	4.080	3.622	6.125	9.240	1.304	10.9	10.4	10.2	-5	Call	M, V	.015 LS3	JG31F8-4075-5
311969	387	4.125	3.622	6.125	9.240	1.304	11.1	10.6	10.4	-5	Call	V	STD LSX	JG31F8-4125-2
311970	388	4.130	3.622	6.125	9.240	1.304	11.1	10.6	10.4	-5	Call	V	.005 LSX	JG31F8-4135-2
311971	389	4.135	3.622	6.125	9.240	1.304	11.2	10.7	10.4	-5	Call	M, V	.010 LSX	JG31F8-4135-2
311972	393	4.155	3.622	6.125	9.240	1.304	11.3	10.8	10.5	-5	Call	M, V	.030 LSX	JG31F8-4155-3
311973	399	4.185	3.622	6.125	9.240	1.304	11.4	10.9	10.6	-5	Call	M, V	.060 LSX	JG3108-4185-3

Footnote

A	fits 3.480 and 3.500 stroke
B	Oil Rail Support is Included
C	.927 Pin Diameter
D	.912 Pin Diameter
E	.990 wrist pin
F	Indicates 1.040 Pin Diameter
H	Indicates 1.094 Pin Diameter
J	Indicates 3mm Oil Ring
K	.945 Pin Diameter
L	Limited Quantities available
M	Made To Order
P	.975 Pin Diameter
S	Solid dome design
W	428 Crank Shaft
X	angle milled heads

PLEASE LET US KNOW IF YOU NEED ANY OTHER PARTS WITH YOUR ORDER

NOTE: The above pictures are references and may not be part# specific.

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Please call: 817-371-4900

All products are in stock when listed on eBay. Some items get sold via numerous methods (online website, retail walk-in customers, phone in orders, etc) and may be out of stock upon conclusion of the eBay listing. Please contact us to check inventory status before bidding, to get up-to-date inventory info, and/or re-stocking dates. Re-stocking can take a few weeks for some products, so if you need the product ASAP, contact us directly before bidding!

Customs Information
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.

RPM Lab, LLC strives to obtain the highest possible level of customer satisfaction with the products it offers, however, if you are ever not satisfied with your purchase the following policy applies:

With the EXCEPTION of stroker kits, custom pistons, or any other custom designed and/or manufactured parts refunds are available but subject to the following limitations:

• The item is unused and undamaged.
• RPM Lab, LLC is notified within 14 days of the date of delivery. "Delivery" should be construed to mean the delivery date as transmitted to RPM Lab, LLC by the respective carrier (UPS, FEDEX, DHL, USPS).
• An authorized representative of RPM Lab, LLC approves the return of the item(s).
• The item(s) is/are returned to RPM Lab, LLC at customer's own expense via an insured and tracked shipping method.
• Once the return shipment is received and inspected, RPM Lab, LLC will refund the purchase price LESS the required 25% restocking fee.

NOTICE: Stroker kits, custom pistons and all other custom designed and/or manufactured parts are strictly non-refundable