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Starting @ $11,950
Incredible Torque And Horse Power
Pontiac 461 stroker with 475 HP engine package with Edelbrock aluminum heads and a forged rotating assemble. Can be custom designed to match your specific needs. All engines can be custom painted to match your vehicle at your request. We can outfit your engine with the exclusive March Performance serpentine belt system.  We can also assist you in choosing the proper transmission and stall speed converter combination for your vehicle and have it shipped directly to you as your performance crate engine is being built.

 

Horsepower 475 @ 5997 RPM
Torque 525 Ft. Lbs @ 3500 RPM
Bore & Stroke  

 

461 475HP Accessories

Customize Your Crate Engine

 
 
 
Add $950
Add $1,550
Add $1,950

 

 

 
Powerjection III EFI System
 
 
Kit Includes:
 
  • 750 CFM Throttle Body Assembly (An exact swap for a 4150 Holley)
  • (4) 62 lb./hr. port style injectors
  • Built in EMS (Engine Management System) Mounted on the throttle body
  • Dashboard Software CD with comprehensive Instruction Manual
  • All harnesses and connectors (Much less harnessing than other systems)
  • Idle Air Control - Built in to the throttle body 
  • Coolant Temperature Sensor - 3/8-NPT threads for most manifolds
  • Throttle Position Sensor
  • Wideband O2 Sensor and cable (Many competitive units are narrowband)
Add $2,100
Holley Carburetor
(Includes braided fuel line for carburetor)
Add $350
 
 
MSD Mini High Torque Starter
Add $245
 
 
 
MSD 6AL Ignition Control
Add $300
 

 

Custom Painted Engine:
 
  • Have a custom painted car?  Why not have a custom painted engine?  Give us your paint code and we'll do the rest.
 
Add $300

 

 
 
Webber Stack Induction:
 
  • Webber Stack Induction Aluminum Intake Manifold
  • Webber 48mm IDA Carburetors
  • Chrome Stacks
  • Webber Carburetor Fuel Line
  • Webber Carburetor Throttle Linkage
Add $ Call

 

Old School Look:
 
  • One of the most popular and durable dress-up kits available today! This black crinkle kit with its distinctive look and boldly striking wording comes with everything you need for race day or show day!
Add $225

 

 
 
Edelbrock Dual Quad's:
 
  • Performer RPM Dual Quad Air-Gap intake With EnduraShine Finish
  • 2 Thunder Series AVS carburetors With EnduraShine Finish
  • Progressive throttle linkage
  • Fuel line
  • Edelbrock Chrome Dual Carburetor Air Cleaner
Add $1,300

 

Automatic Transmission Package's:
 
The world’s finest transmission packages, custom made for Proformance Unlimited.
Each Transmission Package is tailored to your engine, and Test Driven to ensure maximum performance.
They build them from Mild to Wild, if you’ve got the horsepower, they have the transmission.
TH-350 Or TH-400 Add $1,800
700R4 Or 200R4 Add $2,650