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Butler/Comp Custom Cam & Lifter Master Kit Pontiac HR BPI-K-BP8021SP

Similar to the 51-423-11 but with wider lobe separation, smoother idle, a broader power curve, and more vacuum

(HR) (Std Firing Order/ Std Journals) 276/282, 224/230, .503/.510, 114LS with 1.5 ratio rockers
Lift with 1.65 ratio rockers .553/.561

Slightly more vacuum than a 112 and produces a little smoother idle.
Pricing: $1,599.95

Customize Your Item

- Choose Your Head -
 * required
- Choose Retainer Option -
 * required
- Choose Cam Install Option -
 * required
- Choose Break in Oil Option -
 * required
- Choose your Polymer Distr. Gear -
 * required
- Choose Your Lifter Set -
 * required
- Choose your Rocker Arms -
 * required
- Choose Your Timing Set -
 * required
- Choose Valley Pan Option -
 * required
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Butler custom cam master kits are designed and tested kits built with the parts we think are best for the application. Each kit has the correct cam/lifter/and spring combination with everything you need to perform a top end performance upgrade without guessing if it will work.

Choice of Hyd. roller lifters

o Morel 5884R
o Johnson 2112-OPR

Timing Set: Pontiac Pro Billet Timing Set
o Billet Gears, 9 Keyway Crank Sprocket w/ Seamed Chain **Hone to fit if needed**

BPI Hydraulic Roller Spring (Cast Iron D-Port)
o Type Dual With Damper O.D. Outer: 1.465" I.D. Outer: 1.091" I.D. Inner: .807" Coil Bind: .950" Seat Load: 140@1.600" Open Load: 350@1.100" Rate (lbs/in): 375 Valve Springs

Valve Springs: EDL-5845 (Cast Iron SD/RAIV and Edelbrock Heads)
o 1.460 in. O.D., 1.200 in. Coil Bind Height

o 10 Degree Chromoly Retainers- For 1.437''-1.500" Diameter Springs

Also includes a pushrod length checking tool for accurate push rod selection and matching locks and valve stem seals

**Stock valley pan will not allow clearance for tie bar on hyd roller lifters. See TPP-0421 or BFA fabricated valley pans.**


Shipping Information

  • Item Requires Shipping
  • 25.0 lbs.
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