Page 679 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Pro Street Ring And Pinion Gear Sets Competition Ring And Pinion Gear Sets
Pro Street ring and pinion gear sets are High-strength, impact-resistant gear
manufactured from 4320 high impact sets feature a 3.1% nickel content
material with a 1.75% nickel content, and are engineered to endure the
more impact resistant than OEM gear rigors of drag racing. Gear sets offer
sets, yet without compromising longev- exceptional durability, consistent, and
ity. High-quality gear sets offer quiet setup. Sold complete with detailed
operation, consistent installation and installation instructions.
setup, and are sold complete with a Note: Competition ring and pinion gear sets are
detailed instruction sheet. designed for drag racing only.

Ford 9"
Chrysler 8.75" (Late 1969-73)
8-3/4" Dia. Ring Gear, 10-Spline Pinion, 1.875" Dia. 9" Dia. Ring Gear, 28-Spline Pinion
Part No. Ratio Part No. Ratio
USG03-887430L 4.30 USG07-990411 4.11
USG03-887486L 4.86 USG07-990429 4.29
USG07-990457 4.57
Ford Super 8.8” IRS (2015-Up Mustang) USG07-990471 4.71
8.8” Dia. Ring Gear, 30-Spline Pinion USG07-990514 5.14
Part No. Ratio
USG07-888373-15 3.73 Ford 9.5"
USG07-888411-15 4.11 9.25" Dia. Ring Gear, 35-Spline Pinion, 1.5" Pinion Shaft Dia.
Part No. Ratio
Ford 9" USG07-995370 3.70
9" Dia. Ring Gear, 28-Spline Pinion USG07-995389 3.89
USG07-995411 4.11
Part No. Ratio
USG07-995429 4.29
USG07-890350 3.50
USG07-995457 4.57
USG07-890370 3.70
USG07-995486 4.86
USG07-890389 3.89
USG07-995514 5.14
USG07-890411 4.11
USG07-890430 4.30 Ford 10” Dual Bolt Pattern
USG07-890457 4.57
9.4” Dia. Ring Gear, 35-Spline Pinion
Part No. Ratio
GM 12-Bolt Passenger
USG07-910389 3.89
8-7/8" Dia. Ring Gear, 30-Spline Pinion USG07-910411 4.11
Part No. Ratio USG07-910429 4.29
USG01-888411 4.11 USG07-910457 4.57
USG01-888456 4.56 USG07-910471 4.71
USG01-888488 4.88 USG07-910500 5.00
USG07-910514 5.14

Dana 60
9-3/4” Dia. Ring Gear, 29-Spline Pinion
Part No. Ratio
USG05-997430 4.30
GM 12-Bolt Passenger
8-7/8" Dia. Ring Gear, 30-Spline Pinion
Part No. Ratio
USG01-988456 4.56
USG01-988488 4.88

Photo by: Ashley Knidle Jim Stanton

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