Home - Brands - Butler Performance
Click on image to zoom

350 Block / 3.905" Bore / Ross -9cc Dish / Stock 4.250" str. / Quick Ship Rotating Assembly

  • Cast or Forged Crank 4.250" Stroke
  • Ross Forged 3.905" -9cc Dish Top Pistons
  • Aftermarket 990 wrist pins
  • Total Seal CR Classic Race Rings
  • Bushed/Full Float H-beam 6.800" rods
  • Pin Fitted
  • Total Seal Classic Race Rings
  • Federal Mogul Performance Main & Rod Bearings
  • Butler Process- Balanced Internally
Limited Supply: only 1 remaining
Availability: Ships in 3-4 business days or sooner
Was: $2,149.00
Sale: $2,049.00

Customize Your Item

- Choose Crank Option -
 * required
- Choose Your Rod -
 * required


Compression Ratio : 10.39 : 1 with 72cc Heads and 9.03 : 1 with 87cc Heads

All assemblies are internally balanced and require a neutral balanced flexplate or flywheel and harmonic balancer. All our assemblies come standard with Total Seal Classic rings. Our assemblies can be upgraded and customized to your project.

Images for display purposes only

The Butler Process

All rotating assemblies sold by Butler Performance, regardless of brand, are balanced in our shop by our experienced machinists.

Most other shops offer assemblies unbalanced or charge additional balancing fees.

We don't take anyone else's word when it comes to the parts we stand behind. We put all rotating assemblies through the Butler Process for quality and performance. Our internal balancing process ensures each part of the kit is put through a multi-step inspection process. We then weigh and pin fit the rods and pistons as needed. We computer balance the crankshaft to the rest of the assembly. This process ensures that all the parts of the assembly are matched to form a "Butler Performance" worthy assembly. We then document all weights and information on a balance card that ships with the assembly.

Image shown with optional H-Beam rod

Compression Calculator

Compression Calculator

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*

Bore: (diameter)
Cylinder Head Volume:
Effective Dome Volume:
Use (-) for Dome and (+) for Dish.
Deck Clearance:
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*


  • BPI-152241
  • BPI-152241
  • Butler Performance
  • Available
  • Ships in 3-4 business days or sooner
  • New

Shipping Information

  • Item Requires Shipping
  • 130.0 lbs.

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.