Butler 340cfm Ported Edelbrock Rd-Port, 72cc, Hyd. Roller. Top End Package, up to 700hp Pump Gas BPI-TEP-RD-72HR-340

Butler Performance Top End Kits

Pump gas on a 400-428 engine. require high octane for 455 + cu.in. engines

Complete top end kit with almost everything you need to upgrade your normal Pontiac to a Butler High Performace Pontiac. These high HP combinations have been used in Butler Performance builds for many years and have powered some of the highest performing Pontiac engines in the world. We now offer these kits to take the guesswork out of piecing together a good combination that works well together. All these kits are actual build kits used in our shops. If its on here we use it in our own shop!!

BP/Edelbrock CNC Ported Round Port Custom Built Heads

Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 340+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Chromoly Locks, Retainers, Locators & Viton Valve Stem Seals w/ ARP Rocker Studs & Guide Plates / Ready to Bolt On

• Combustion chamber volume: 72cc
• Intake valve diameter: 2.19"
• Exhaust valve diameter: 1.77"
• Valve stem diameter: 11/32"
• Valve guides: Manganese bronze
• Deck thickness: 5/8"
• Valve Springs per application
• Rocker stud: 7/16"
• Guideplate: Hardended steel
• Pushrod diameter: 5/16"
• Valve angle: 14
• Exhaust port location: Stock Ram Air IV
• Spark plug fitment: 14mm x 3/4 reach, gasket seat

Butler Northwind 4150-340 Intake

Low Rise
356-T6 Aircraft Aluminum
5 Axis CNC machined
4150 Flange
Port matched to our BPI Ported 340cfm Heads

HP Levels based on Cam Options

8040 Butler/Comp SP Street Performance Billet Roller Cam (HR) 294/300, 242/248, .540/.563, 110LS (Std Firing Order/ Std Journals)
Lift with 1.65 ratio rockers .594/.619

8041 Butler/Comp SP Street Performance Billet Roller Cam (HR) 294/300, 242/248, .540/.563, 112LS (Std Firing Order/ Std Journals)
Lift with 1.65 ratio rockers .594/.619

505 cu in- 625-650+HP

8041 Butler/Comp SP Street Performance Billet Roller Cam (HR) 294/300, 242/248, .540/.563, 112LS (Std Firing Order/ Std Journals)
Lift with 1.65 ratio rockers .594/.619

8050 Butler/Comp SP Street Performance Billet Roller Cam (HR) 300/306, 248/254, .563/.581, 112 LS (Std Firing Order/ Std Journals)
Lift with 1.65 ratio rockers .619/.639

8052 Butler/Comp SP Street Performance Billet Roller Cam (HR) 300/306, 248/254, .563/.581, 110LS (Std Firing Order/ Std Journals)
Lift with 1.65 ratio rockers .619/.639

535 cu in- 675-700HP

8050 Butler/Comp SP Street Performance Billet Roller Cam (HR) 300/306, 248/254, .563/.581, 112 LS (Std Firing Order/ Std Journals)
Lift with 1.65 ratio rockers .619/.639

8052 Butler/Comp SP Street Performance Billet Roller Cam (HR) 300/306, 248/254, .563/.581, 110LS (Std Firing Order/ Std Journals)
Lift with 1.65 ratio rockers .619/.639

110 LS creates a more choppy idle

112 LS makes a slightly smoother idle

Lifters

2112-OPR Johnson Lifters, Pontiac Lifter Set, Hi-Perf Hydraulic Roller, 326-455, Set/16 **Hi-Perf lifters have .093" of Travel / Preload= 0 Lash + 1/8-1/4 Turn**

ST2112-OPR Johnson Lifters, Pontiac Lifter Set, Short Travel Hydraulic Roller, 326-455, Set/16 **Short travel lifters have .058" of Travel / Preload= 0 Lash + 1/8 Turn**

2347SE Pontiac Retro-Fit Hydraulic Roller Lifters with Pressure Pin Oiling, Slow Leak-down (SE)(Set/16)

Timing Chain

Pontiac Pro Billet Timing Set, Double Roller, Billet Gears, 9 Keyway Crank Sprocket w/ Seamed Chain

Available in standard length and -5 (.005" shorter if line bored)

Fasteners & Gaskets

ARP Pontiac Head Bolt Kit For Edelbrock RD-PORT/Performer Cylinder Heads

Intake Manifild Bolt Kit

5/16" Cork/Rubber Valve Cover Gaskets

RD-Port Reinforced Exhaust Gaskets

Pontiac Intake Gaskets - 340+ CNC Heads 1.20 X 2.560 (Set) Butler recommends these gaskets on Edelbrock 340cfm Ported Cylinder Heads

B.P.'s exclusive headgaskets, same as used in Butler Performance engines

Pushrods & Pushrod Checker

We include a pushrod length checking tool in each kit for measuring proper pushrod length. Because brands of lifters and rockers require different pushrod length.

Rockers

We offer many style rockers to choose from. Rockers that will work for these kits include stainless steel or aluminum from brands such as Comp, Scorpion, PRW, Crower, and more.

We recommend 1.5 ratio rockers so that pushrod slotting is not neccessary.

Valley Pan & Distributor Gear

Hydraulic Roller Lifters require aftermarket valley pan such as the TPP-TP-041S

Requires polymer distibutor gear such as BOP-PDG37 or BOP-PDG38

Compression Ratio Numbers for Reference (Compression ratio with Block, Head, and Stroke with -8cc FT)

Click Here for our compression calculator for other variations such as bore, gasket thickness, decking, and piston types and volumes