Butler/Comp Custom Cam & Lifter Master Kit Pontiac HR K-51-423-11

SKU: BPI-K-51-423-11

Benefits:
• Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
• More vacuum allows a step up in duration for greater performance
• Best seller; excellent all around performance in street carbureted applications
• Specs 276/282, 224/230, .502/.510, 110LSA with 1.5 ratio rockers
• Lift with 1.65 ratio rockers: .552/.561

Pricing: $1,549.95

Customize Your Item

Choose Your Head

- Choose Your Head -

* required

Choose Retainer Option

- Choose Retainer Option -

* required

Choose Cam Install Option

- Choose Cam Install Option -

* required

Choose Break in Oil Option

- Choose Break in Oil Option -

* required

We recommend a Polymer Gear on all Hyd. Roller Applications. 0.491 (Use with Factory GM HEI / Points & Mallory / Mallory Must Be Drilled for Larger Dia Pin), .500, for MSD, Pertronix, FAST, and Holley Dist Only

Choose your Polymer Distr. Gear

- Choose your Polymer Distr. Gear -

* required

Choose Your Lifter Set

- Choose Your Lifter Set -

* required

Choose your Rocker Arms

- Choose your Rocker Arms -

* required

Choose Your Timing Set

- Choose Your Timing Set -

* required

Aftermarket Valley pans or modifications of factor valley pan will be necessary when converting to Hyd Roller due to clearance issues

Choose Valley Pan Option

- Choose Valley Pan Option -

* required

Qty:

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Description

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**

Valve Springs: LUN-73949-16 (Cast Iron D-Port)
o Type: Dual With Damper O.D. Outer: 1.440" I.D. Outer: 1.096" I.D. Inner: .750" Coil Bind: .950" Seat Load: 120@1.650" Open Load: 319@1.100" Rate (lbs/in): 363

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

Retainers:
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