Working on my port injected Olds project, trying to find some injectors to use.

The rail has an ID of .40", or just over 10MM.

The intake has an ID of .525", or a bit over 13MM.

No meat in the rails to open them up more than just a hair, so probably not an option to go bigger there.

The only writeup for this project the guy says he used later LT1 injectors, but as far as I could find, the O-rings are 14MM OD on both ends for those.

If I had a listing of a bunch of injectors showing o-ring OD, I'd be fine. But finding the actual dimension for various injectors is proving pretty difficult.

To top it off, I need to find an injector to use before I can figure out how tall a throttle body spacer I'll need, if any. As it is now, the injector needs to be either incredibly short, or I'll need to make a 1" throttle body spacer, so the rails clear the IAC and throttle.

I'll be using a '7727 to run the system, if it matters. The regulator for the system sets pressure at 39PSI, but as long as the injectors are close enough, I know I can recalculate the flow rates to get it dialed in.