Page 726 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Ultralite Rocker Arm Sets Pro Street Rocker Arms For GM LS1/LS2
Advanced Ultralite rocker arm sets offer 50% less nose YTRYT6683 NEW!
weight compared to OEM rocker arms, increasing Shaft-mounted, Pro Street rocker arms mount both
RPM potential while also providing added strength the intake and exhaust to a common shaft, increas-
and durability. Kits are offered in standard or high ing clamping load significantly and allowing up to
rocker ratios, and are designed for hydraulic camshaft applica- 600 lbs. of maximum open spring pressure. Designed for GM
tions with a maximum open spring pressure of 400 lbs. LS1 or LS2 applications, CNC-machined billet aluminum adjustable rocker
Part No. Description Ratio arms are fit with chrome moly steel roller tips and oversize caged bearings
YTRYT6645 Chevy LS1 5.7L, 1997-Up Corvette; 1998-02 Camaro/Firebird, Hyd. 1.8 for maximum durability. Sold in sets of 16 with necessary hardware, rock-
YTRYT6667 Chevy LS3 6.0L, 2008-13 Corvette; 2010 Camaro SS, Hyd. 1.7 ers arms have a 1.7 ratio.
YTRYT6685 Chevy LS3 6.0L, 2008-13 Corvette; 2010 Camaro SS, Hyd. 1.85
YTRYT6670 Chevy LS7 7.0L, 2006-13 Z06 Corvette; 2014 Camaro Z28, Hyd. 1.8 LS Valve Cover Spacers
Chevy LS3/LS9/LSA/L98, Engineered for popular GM LS engines,
YTRYT6733 1.7
AFR Mongoose 260cc/Trick Flow Gen X 255cc, Hydraulic NEW!
* Kit featuring adjustable rocker arms requires YTRYT5123 valve cover spacers for clearance spacers provide necessary clearance when
installing aftermarket rocker arms, such as Ultralite adjustable units. Spac-
ers are .500" tall and sold per pair, complete with seals.
Part No. Description
YTRYT5123 LS Valve Cover Spacers
YTRYT5132 Replacement Seal

Grizzly Lockers
Grizzly Lockers deliver full 100% power to both tires,
Duragrip Positraction Differentials while allowing disengagement for smooth turning.
Duragrip differentials incorporate Raybestos clutches Differentials are fully assembled in the USA using
for effective clutch lock-up, while delivering torque to premium 8620 steel components and feature a patent-
the tire with the most traction. Fully rebuildable units pending design. Covered by a 1-year warranty.
feature nodular iron cases fitted with forged 4320 Part No. Description
steel internal gears for maximum durability. YKNYGLD60-3-35 Dana 60, 35-Spline Axles, 4.10 And Lower Gear Ratios
YKNYGLD60-4-35 Dana 60, 35-Spline Axles, 4.56 And Up Gear Ratios
Part No. Description YKNYGLF9-31 Ford 9", 31-Spline Axles
YKNYDGD60-3-30 Dana 60, 30-Spline, 4.10 & Lower Gear Ratios NEW!
YKNYDGD60-3-35 Dana 60, 35-Spline, 4.10 & Lower Gear Ratios NEW!
YKNYDGD60-4-30 Dana 60, 30-Spline, 4.56 & Lower Gear Ratios NEW! Master Differential Overhaul Bearing Kits
YKNYDGD60-4-35 Dana 60, 35-Spline, 4.56 & Lower Gear Ratios NEW! The most complete differential overhaul
YKNYDGF8.8-28-1 Ford 8.8", 28-Spline Axles kits currently available. Each kit
YKNYDGF8.8-31-1 Ford 8.8", 31-Spline Axles
YKNYDGGM12P-3-30-1 GM 8.875" 12-Bolt Passenger, 30-Spline Axles, 3.08-3.90 Gear Ratios includes pinion and carrier bearings,
YKNYDGGM7.5-3-28-SM GM 7.5"/7.625" 10-Bolt, 28-Spline Axles pinion shims, Super Shim carrier shims,
YKNYDGGM8.5-3-28-1 GM 8.5" 10-Bolt, 28-Spline Axles pinion seal, gasket (where required),
YKNYDGGM8.5-3-30-1 GM 8.5" 10-Bolt, 30-Spline Axles
ring gear bolts, pinion nut, gear mark-
Traction-Loc Differentials ing compound and brush, and two crush
Fully loaded differential carriers are manufactured sleeves.
using billet steel left and nodular iron right cases, fitted Part No. Description
with forged 4320 steel internal gears and premium Ray- YKNYKD60-R Dana 60/61
Ford 8"
YKNYKF8
bestos clutches. Ideal for street/strip applications, fully rebuildable YKNYKF8.8-A Ford 8.8", 2009-Down
units utilize an aggressive design for maximum traction. YKNYKF8.8-B Ford 8.8, 2010-Up NEW!
YKNYKF9-A Ford 9", LM102910
Part No. Description
YKNYDGF9-28-AG Ford 9", 28-Spline Axles, Aggressive Design YKNYKF9-HDC-SPC Ford 9", “Daytona” LM603011,
YKNYDGF9-31-AG Ford 9", 31-Spline Axles, Aggressive Design Includes Crush Sleeve Eliminator
YKNYKGM12P GM 8.875" 12-Bolt Passenger
YKNYKGM7.5-B GM 7.5"/7.625" 10-Bolt, 1982-99
YKNYKGM8.2BOP GM 8.2" 10-Bolt, Buick/Olds/Pontiac
YKNYKGM8.5 GM 8.5" 10-Bolt
YKNYKGM8.5-HD GM 8.5" 10-Bolt, Aftermarket Positraction Unit

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