SO I have a "pet " project...

Mind you, this is NOT for making serious HP, but rather consistant HP like an LS1 length runner system.

I was on ebay looking at multiple carb manifolds and I was inspired to come up with an EFI version. Is the work required to do this extensive. Yes. Will it look cool? Yes. Will it run as well as TPI? Yes.

I think I will be losing about 2-3 inches of runner per side. I'm not done yet with my plans, so the specifics may change.

I have two plenums with throttle bodies and one baseplate.

Now, I am just trying to figure out weather I want to cut the runners just above the plane of the fuel rails, or do I want to pick up a set of SLP runners. Either way, I am going to join the runners to the BOTTOM of the plenum (yes, CUT and grind) and the reconnect everything (by side) to the plenums. That means I will need to come up with bolted covers for the old TPI runner attachment points.

Any thoughts?

 

Why waste the time for a setup with inherent design flaws, the biggest of which is the runner to port entry angle? Why not start from scratch and build something like the new BBK mustang intake or like the old SLP T-ram?

 

I must just be crazy then... more creativity than sense!

Ya' know, I really thought about using another system or fabbing a new one, but I really want a dual plenum system... including dual throttle bodies.

 

Well, if you persist in going down this path, you can always look towards the Dodge Viper intake for hints, and maybe even the new Masarati's intake for inspiration.

 

Dual penum isn’t the problem, the problem is that it doesn’t make sense to put that much work into something designed around something that is inherently flawed (the TPI base). It would only be a little more work to start totally from scratch.

 

You could start with some 1/4" aluminum plates and go from there with a new base. If you are going to mess with it, go all out. Like everyone said, dont screw with the TPI base. You really arent short cutting too much

 

Well, the other idea was getting a custom sheet metal lower half- where the runners went directly to the heads on one end and then up to the Plenums on the other.

However, the prices are UNREAL from Hogan's.

Of course- this project won't be done tomorrow... so I have time and can wait till the best idea presents itself.

As for the Viper manifold- I was thinking more about the John Moss motor. Remember the 572 Camaro?

 

What about converting a tunnel ram or cross ram to port injection, and using two throttle bodies instead of a common plenum? It would be much easier to do, and the runner length would be about perfect for an efi sbc.

 

Hogans stuff is expensive, but the fact is that aluminum whittles about the same as wood, so you could very realistically get a few pieces of ¼” aluminum plate and start cutting pieces out for the ends and bottom in about the same way as you would out of wood and go from there.