400 SBC PRO FT PISTON 4.155″ BORE, 4.000 STROKE, 6.000 ROD

Description

SRP Professional Series Pistons
SRP Professional pistons include features used in professional racing such as lightweight forged side relief (FSR) forgings, high quality wrist pins, and CNC machined ring grooves and skirts. In addition, every package includes JE Pro Seal Premium Piston Rings. The included ring set features a 1.2 premium steel top ring, 1.5 Napier (hooked face) second ring and 3.0mmstandard tension oil ring. Every piston is designed and manufactured in the USA at the advanced JE/SRP piston manufacturing center.

Includes:
Wire Lock:
927-073-MW
Straight Wall Pin: 927-2250-15-51C (106g)

Specifications:

Part #: SRP271063
CID: 434, 377
Bore: 4.155
Stroke: 4.000 (434), 3.480 (377)

Rod Length: 6.000 (434), 6.250 (377)
Compression Height: 1.000
Compression Ratio with 58cc chamber volume: 11.7 (377), 13.3 (434)
Compression Ratio with 64cc chamber volume: 10.8 (377), 12.3 (434)
Compression Ratio with 70cc chamber volume: 10.1 (377), 11.5 (434)
Dome Volume: -5.0cc
Gram Weight: 383
Footnote: .927 Pin Diameter
Oversize: .030
Recommended Ring Set (Check Proseal listing to determine oil ring tension): JG31F8-4155-2
SRP Pistons was founded in 1997 by JE Pistons, the world’s largest manufacturer of forged racing pistons. The idea was simple, to create a high quality forged piston at an affordable price. Every SRP forging was created with quality, performance and affordability in mind. By designing dedicated forgings, the pistons became both lighter and stronger while machining time and scrap aluminium were drastically reduced. These factors have reduced the price of SRP Pistons and contributed to their success. Today, over 400 different piston part numbers comprise the SRP product line-up, including Chevy, Ford, Chrysler, Honda and more.