A couple of years ago I built a Multiport Fuel Injected 292. Tom Lowe built the long block for me. Most of the EFI components were either a modified off the shelf item, or were completely custom. One of the ideas that was developed during that build was a modification to the intake manifolds that would allow you to install the manifold OVER the top of the header flange. You would use threaded studs and flanged nuts instead of the old clip that GM used to span both the intake and exhaust simultaneously. With this design you install the header and torque it in place before the intake is installed (see pics). The intake goes on and is held with a second set of flange nuts and torque separately. This is especially nice for aftermarket applications where the flange on your header may be a different thickness then the flange on your intake.

What do you guys think of these? Would you put them on your engine?

[img]https://photos.app.goo.gl/rub8vAYKD7iuvQPs8[/img]

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Welcome aboard DTM, that sounds like a great concept. Show us some updates when you get them, I'll bet you may have others wanting to try one.

Are the photos not visible?

Sorry, took a while for my phone to load the link. Looks good! You can also load pics directly into the thread as well.

DTM,
I like your idea. Little harder to do for the home mechanic. Not everyone can weld alum. Me included, at least not very well.
When loading the pic. Before posting, click on that attachment picture, it will ask you if you would like to embed the file. It will then put the code into your post.

Think I got the pics loaded.

Welding the blocks to the intake is a concern. I can't weld aluminum (anymore) either. 20 years ago I was so-so at it.

I like the idea. Seeing the angle of mounting boss for the injectors, my Aussie Speed intake has that cast-in. Just not the same mounting to the engine as you have. Knowing that, I could do fuel injection with my setup. Thanks for sharing and giving me ideas.

One reason these blocks were ever even dreamed up is because I build a fuel injected 292. I used a Holly Throttle body. The fuel rail and and the throttle body didn't have enough space between them when we laid everything out with the tabs that are cast into the existing intake manifold. The blocks were originally supposed to space the intake out from the block far enough to make space. Then in the process the new mounting format was conceived.

It's a great idea and has dual purpose.