Page 775 - 2022-23 Auto Performance Drag Racing

Platinum Twin-Shaft Rocker Arms
DRAG RACING
Ultralite Rocker Arm Sets
Advanced Ultralite rocker arm
sets offer 50% less nose weight
compared to OEM rocker arms,
increasing RPM potential while
also providing added strength and
durability. Kits are offered in standard
or high rocker ratios, and are designed for hy-
draulic camshaft applications with a maximum open spring
Intake and exhaust rockers are joined
in pairs on a shaft that is 22% larger
and engineered for extreme RPM.
Maximum width bearings deliver
greater rigidity, resistance to breakage,
and superior load carrying ability, eliminating
the need for screw-in studs. Rocker arms bolt to
existing 7/16" stud mountings with supplied bolts. Easy to
service in the field. Sold in sets of 16. pressure of 400 lbs.
Part No.
Description
Ratio
YTRYT6645
Chevy LS1/LS2
1.8
YTRYT6667
Chevy LS3/LS9/LSA/L98
1.7
YTRYT6685
Chevy LS3/LS9/LSA/L98
1.85
YTRYT6670
Chevy LS7/LSX
1.8
YTRYT6733
Chevy LS3/LS9/LSA/L98, AFR Mongoose 260cc/Trick Flow Gen X 255cc, Hydraulic
1.7
Part No. Description Cylinder Head Ratio
* Rocker arms in this kit have an extra .070" pushrod offset on intake for repaired or wider ports.
YTRYT6008
SB Chevy 265-400
OEM/Bowtie/AFR/Dart/ World/Brownfield
1.55/1.55
YTRYT6009
SB Chevy 265-400
OEM/Bowtie/AFR/Dart/ World/Brownfield
1.6/1.6
YTRYT6341*
SB Chevy 265-400
OEM/Bowtie/AFR/Dart/ World/Brownfield
1.6/1.5
Platinum Single-Shaft Rocker Arms
Affordable shaft-type platinum
rockers for canted valve engines
such as Chevy and Ford. Dowel pins under each mount prevent rocker mis- alignment and rotation. Sold in sets of 16.
Pro Street Rocker Arms For GM LS1/LS2 YTRYT6683
Shaft-mounted, Pro Street rocker
arms mount both the intake
and exhaust to a common shaft,
increasing clamping load signifi-
cantly and allowing up to 600
lbs. of maximum open spring
pressure. Designed for GM LS1 or
LS2 applications, CNC-machined
billet aluminum adjustable rocker arms are fit with chrome moly steel roller tips and oversize caged bearings for maxi- mum durability. Sold in sets of 16 with necessary hardware, rockers arms have a 1.7 ratio.
LS Valve Cover Spacers
Engineered for popular GM LS
engines, spacers provide neces-
sary clearance when installing
aftermarket rocker arms, such as
Ultralite adjustable units. Spacers
are .500" tall and sold per pair, complete with seals.
Part No. Description
Part No.
Description
Cylinder Head
Ratio
YTRYT6603
BB Chevy 396-454
OE/Brodix/Dart/Edelbrock/World
1.7
YTRYT6321
Ford 351C, 351M-400, 429-460
OE/CJ/SCJ/Motorsport/Trick Flow/Wilburt
1.73
Rocker Pedestal And Saddle Shim
YTRYT6241
Engineered for use with Platinum
twin-shaft rockers, shim is .100”
thick and may be used to obtain proper valve train geometry. Sold each.
Duragrip Positraction Differentials
YTRYT5123
LS Valve Cover Spacers
YTRYT5132
Replacement Seal
Duragrip differentials incorporate Raybestos clutches for effective clutch lock-up, while delivering torque to the tire with the most traction. Fully rebuildable units feature nodular iron cases fitted with forged 4320 steel internal gears for maximum durability.
Part No. Description
YKNYDGD60-3-30
Dana 60, 30-Spline, 4.10 & Lower Gear Ratios
YKNYDGD60-3-35
Dana 60, 35-Spline, 4.10 & Lower Gear Ratios
YKNYDGD60-4-30
Dana 60, 30-Spline, 4.56 & Lower Gear Ratios
YKNYDGD60-4-35
Dana 60, 35-Spline, 4.56 & Lower Gear Ratios
YKNYDGF8.8-28-1
Ford 8.8", 28-Spline Axles
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
YKNYDGGM7.5-3-28-SM
GM 7.5"/7.625" 10-Bolt, 28-Spline Axles
YKNYDGGM8.5-3-28-1
GM 8.5" 10-Bolt, 28-Spline Axles
YKNYDGGM8.5-3-30-1
GM 8.5" 10-Bolt, 30-Spline Axles
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2022-23