Another new guy who is getting into RFI

[Larry R]

Hello: I am new to this forum and am sorta new to EFI. I have a 1957 Chevy, 327, B&M 144 blower, Holley HP throttle body EFI. It is up and running but I feel as though I have a long way to go to get it where I believe it should be. Waiting in the wings, (it is getting some wiring done now), is my 1951 Studebaker equipped with a 350 Chevy, Weiand 177 blower and it too has a Holley HP TBI on it. Anyway, I look forward to joining in on this forum and learning from those who have experience in EFI. Larry

[dave w]

Not many of us have Holley EFI experience.

Is this the system you are using? https://www.holley.com/550-412.asp

dave w

[Larry R]

Not many of us have Holley EFI experience.

Is this the system you are using? https://www.holley.com/550-412.asp

dave w

I am using Holley 550-412 on my Studebaker and Holley 559-411 on my Chevy. The only real difference is the injector size, (75lbs vs 85lbs). I wanted the smaller size for my Chevy since it is only a 327 with a 144 blower and the larger one for my Stude since it is a 350 with a 177 blower and is capable of making more power than the smaller engine.