We just swapped a 550hp 383 into my friends 1980 corvette. He has a FAST EFI system on it that he's no longer happy with and is going back to a carburetor. He just ordered a 750 Demon carb and I am giving him my spare Holley red fuel pump. I run the same parts on my 67 mustang with no return line, been that way for years with no issues. His car has a return line already on it, do we need to use it or can we just cap it off? I have seen there are fuel filters with return ports on them so using it wouldn't be a big deal, I have just read some posts stating a possible pressure drop from doing this. Here's some eye candy to go with this post.
We just swapped a 550hp 383 into my friends 1980 corvette. He has a FAST EFI system on it that he's no longer happy with and is going back to a carburetor. He just ordered a 750 Demon carb and I am giving him my spare Holley red fuel pump. I run the same parts on my 67 mustang with no return line, been that way for years with no issues. His car has a return line already on it, do we need to use it or can we just cap it off? I have seen there are fuel filters with return ports on them so using it wouldn't be a big deal, I have just read some posts stating a possible pressure drop from doing this. Here's some eye candy to go with this post.