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1.5 RATIO ADJ MODULAR SHAFT Chrysler V8 Big Block R & RB Engine 361-440 Pro Street Adjustable Modular Shaft Rockers (YT 6012)

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$1,443.75
SKU:
YT 6012
Weight:
5.00 KGS
Shipping:
Calculated at Checkout
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Pro Street

Designed for high revving street/strip applications. No other comparable product can compete with 600lbs* maximum open spring pressure whilst retaining factory size bolt-down hardware.

Manufactured and assembled in Australia using the highest quality materials and componentry consistent with those found in our Platinum race series.

Our wide range of true ratios allows you to achieve high lift without relying solely on your camshaft… a trend many engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift. 

Ideal for harsh street and strip applications, these rockers have got what it takes to last!

Why Choose Pro Street?

  • Built to withstand 600lbs* max open spring pressure
  • Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
  • Intricately balanced CNC billet arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine.
  • Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.
  • Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification.
  • Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts.
  • Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance.

 

Additional Parts Available: H/D Billet 3/8" Shaft Caps - YT 18200 - not included in set (Pictured below) 

 

yt-18200-10-pack.jpg

 

 

*Notes* Shafts will accept Original 3/8" Hardware or Upgraded 7/16" Hardware. If using 7/16" Bolts, you will need to drill & tap your Cylinder Head & Factory mount caps / Yella Terra Mount caps to suit * 

 

Tech Spec:

PART NO YT 6012 (Standard Ratio)
BRAND PRO STREET
APPLICATION STREET/STRIP
MAX OPEN SPRING PRESSURE
600lbs
MAKE CHRYSLER
ENGINE V8 BIG BLOCK R & RB ENGINE 361, 383, 440
MOUNTING STYLE MODULAR SHAFT
ROCKER ARM RATIO 1.5
STUD SIZE NA
ADJUSTABLE/HYDRAULIC ADJUSTABLE
ROCKER ARM STYLE FULL ROLLER
ROCKER MATERIAL ALUMINIUM
ROCKER ARM BODY STYLE CNC BILLET
ROCKER ARM NUT STYLE PUSHROD SCREW
MAX SPRING DIAMETER 1.550"
INLET OFFSET 0.160" (in opposite directions)
QTY SET OF 16
NOTE

TOTAL SYSTEM INCLUDES CRADLES, SHAFTS AND ARMS 

ADDITIONAL PARTS AVAILABLE: H/D BILLET SHAFT CAPS (3/8") YT 18200 - 10 Pack

Pro Street

Designed for high revving street/strip applications. No other comparable product can compete with 600lbs* maximum open spring pressure whilst retaining factory size bolt-down hardware.

Manufactured and assembled in Australia using the highest quality materials and componentry consistent with those found in our Platinum race series.

Our wide range of true ratios allows you to achieve high lift without relying solely on your camshaft… a trend many engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift. 

Ideal for harsh street and strip applications, these rockers have got what it takes to last!

Why Choose Pro Street?

  • Built to withstand 600lbs* max open spring pressure
  • Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
  • Intricately balanced CNC billet arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine.
  • Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.
  • Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification.
  • Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts.
  • Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance.

 

Additional Parts Available: H/D Billet 3/8" Shaft Caps - YT 18200 - not included in set (Pictured below) 

 

yt-18200-10-pack.jpg

 

 

*Notes* Shafts will accept Original 3/8" Hardware or Upgraded 7/16" Hardware. If using 7/16" Bolts, you will need to drill & tap your Cylinder Head & Factory mount caps / Yella Terra Mount caps to suit * 

 

Tech Spec:

PART NO YT 6012 (Standard Ratio)
BRAND PRO STREET
APPLICATION STREET/STRIP
MAX OPEN SPRING PRESSURE
600lbs
MAKE CHRYSLER
ENGINE V8 BIG BLOCK R & RB ENGINE 361, 383, 440
MOUNTING STYLE MODULAR SHAFT
ROCKER ARM RATIO 1.5
STUD SIZE NA
ADJUSTABLE/HYDRAULIC ADJUSTABLE
ROCKER ARM STYLE FULL ROLLER
ROCKER MATERIAL ALUMINIUM
ROCKER ARM BODY STYLE CNC BILLET
ROCKER ARM NUT STYLE PUSHROD SCREW
MAX SPRING DIAMETER 1.550"
INLET OFFSET 0.160" (in opposite directions)
QTY SET OF 16
NOTE

TOTAL SYSTEM INCLUDES CRADLES, SHAFTS AND ARMS 

ADDITIONAL PARTS AVAILABLE: H/D BILLET SHAFT CAPS (3/8") YT 18200 - 10 Pack