461-474 cu in Engine Builder Package / TEP w/RA 4.150-4.211" Bore / Ross Forged Piston / 4.250" str.
with Edelbrock RPM Heads (D Port or Rd Port Exhaust)
Comp Cam and Hyd Roller Top End Package
Kit for use with your block
BLOCK NOT INCLUDED
This Top End/Rotating Assembly Kit is designed for use with your block and a local shop to machine it for you. Butler Performance will gladly provide our recommendation of clearances and help with any other tech questions you or your machinist may have. This kit takes out all the guess work to create strong, streetable Pontiac engine running on today's pump gas.
Compression Ratio : Pump Gas (91-93 octane) 10.2-10.4 : 1 included
Cast or Forged 4.250 Str Crank
Forged Ross Custom Pistons 4.150 to 4.211 Bore
Choose Your Rods
Total Seal Rings
Internally Balanced in our shop
Butler Custom Hyd Roller Top End Kit
Edelbrock RPM Heads- Choose Round or D-Port
**Edelbrock Performer RPM Intake
Comp Custom Grind Cam
Hyd Roller Lifters
Billet Roller Timing Set
Choose Idle Quality/HP Level and we will spec and select the appropriate cam
Fasteners & Gaskets
ARP Pontiac Head Bolt Kit
Intake Manifold Bolt Kit
5/16" Cork/Rubber Valve Cover Gaskets
D-Port Reinforced Exhaust Gaskets
Pontiac Fel-Pro Standard Intake Gasket / Includes Heat X-Over Block Off
B.P.’s exclusive head gaskets, 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.
We offer (not included) 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 necessary.
** Performer RPM intake is1" Taller than stock. Trans Am shaker cars need a drop base such as the EP-401. Ram Air cars can have us swap to a stock height Performer or Hurricane intake. Just add the change request to the order notes in checkout.
This kit is for your block being machined by your shop or see our builder kits using your block and us do the machining
Simply fill in the form below to calculate your compression ratio
*BP Flat Top pistons normally include +8cc valve pockets. When selecting dish piston from list, do not add valve pocket cc volume. Valve pocket cc is already included in the dish piston volume*
|Cylinder Head Volume:|
|Effective Dome Volume:
Use (-) for Dome and (+) for Dish.
|Compressed Gasket Thickness:|
|Number of Cylinders:|
|Compression Ratio :|
|Total Displacement (in.3) :|
|Total Displacement cc's :|
Listed is an example of a 461 cu.in. with a 72cc head.
If deck clearance and head gasket sizes are not known, enter 0 and .040 as shown below.
*Chamber volume cc should be entered as a (+) number for dish and (-) negative for dome*
- Butler Performance
- Ships in 2-3 weeks or sooner
- Crate Engines and Builder Kits - Butler Crate Engines/Builder Kits - 450-550 HP Crate Engines and Crate Engine Builder Kits
- Cylinder Heads / Top End Kits - Top End Power Packages - Butler/ Edlebrock Top End Power Packages 450-600 HP
- Engine Components- Internal - Rotating Assemblies & Stroker Kits - In-Stock Quick Ship Assemblies
- Engine Components- Internal - Rotating Assemblies & Stroker Kits - 400 Blocks (406-495 cu. In.)
- Engine Components- Internal - Rotating Assemblies & Stroker Kits - 428 Blocks (433-495 cu.in.)
- Engine Components- Internal - Rotating Assemblies & Stroker Kits - 455 Blocks (462-503 cu. In.)
- Item Requires Shipping
- 130.0 lbs.
- Free Shipping!
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