Fuel Injection Installation on a Non-Chevy 

          I have always envied the reliability and fuel economy of modern cars.  But I never cared for the aerodynamic styling and front-wheel-drive.  To me buying a modern car is like buying light beer.  You give up the flavor just to save a few calories.  I’ll stick with old cars, but my goal is to make them more practical and fuel efficient.  I decided to put fuel injection on my car because I wanted better fuel economy, faster starts, and extended oil and engine life.   

  There are four major steps to this installation. 

If you have questions regarding the contents of this site please email Tom at Tomsriv@ureach.com

  Holley recommended the 700cfm model for my car because its 330 horsepower falls right in the middle of the 700cfm horsepower range.

                      150 - 300 hp COMMANDER 950 TBI, 650 CFM                                                                                     

                      225 - 400 hp COMMANDER 950 TBI, 700 CFM                                                                                      

                      350 - 500 hp COMMANDER 950 TBI, 900 CFM

   My car…

   

 

  Before:  This is the test mule.  It is a 455 CI Buick with 8.5:1 compression.  The cam is a Crower level 2 with .485/.487 lift and 212/216 duration @.050º.  It has 15 inches of vacuum at idle and gets 9-11 mpg with its Edelbrock 750cfm carburetor.  The EFI can work with engines with even lower vacuum by setting the computer to run in open loop below a given RPM. 

 

The Commander 950 is Holley’s top of the line throttle body injection system.  The lower end systems, while less precise, don’t need a laptop to be tuned.

  Holley seems to have invested a lot of time and money in the software and hardware of this system.  Unfortunately they cut corners on the instructions and just gave me photocopies of a real manual.  They were vague and unorganized.  I spent several lunch breaks on hold with the Holley help line.

    Holley includes a list of replacement parts suppliers that includes AutoZone and Kragen.  They are basically GM parts, although some parts may have to be special ordered.