3500 vs. 3400 fuel rail differences

[kwhauck]

So the question is are there any differences?

I need one for mockup on my intake manifold, but all I have is a complete 3500 fuel rail.

Are the injectors the same? Width, height?

Thanks in advance!!

[SappySE107]

non returnless and the injectors are shorter than the 3400. Same diameter.

[Superdave]

it's quite a bit different.. if you aren't going to use it in the final install then i'd get a regular rail. You can probably get one for $10 or so at the junk yard.

[kwhauck]

Well eventually, I will have custom fuel rails, and probably at least 42# injectors. But for right now, I just need some injectors and a type of fuel rail to make sure that my height and side to side measurements leave me enough space on my custom manifold for clearance....