Mystery Plenum

[LGAFF]

Bought this on Ebay oddly I have the front piece from when I bought a air horn and throttle body several years ago. Not sure of history or if it will work...

[LGAFF]

more..

[-=Jeff=-]

if I am looking at it right, it eliminates the IH?

Where is the cover for the outer 'box' areas I see in the pictures?

[LGAFF]

Wont know much until its here, those are the PCV provisons, might have to make something.... and always a chance its a bust.... will see

[-=Jeff=-]

ah, I thought you had it in your hands

[LGAFF]

so oddly I picked this up with a prototype throttle body about 7-8 years ago

[LGAFF]

TB the adapter came with ...

[G8nightman]

TB the adapter came with ...

I have a throttle body with the same numbers on it.

[LGAFF]

I think they must be early TB (RP) Rochester Products prototypes

[A26B]

Wont know much until its here, those are the PCV provisons, might have to make something.... and always a chance its a bust.... will see

I have both of them! Machined from billet.

[LGAFF]

Possible this is an early prototype floor of runner is 5.5" long.... primary is 36.5mm and secondary is 37.5mm

[LGAFF]

Prototype vs production

[LGAFF]

mock up on old block/heads

[LGAFF]

x

[Billy Mild]

This looks like this manifold is begging for a roots style blower. Make an adapter plate and throw a 871 blower on it. Haha

[BigJohn]

That looks like the plan

[Billy Mild]

It would be cool to see a modified plenum that leverages a newer eaton style blower. Take a LSA blower and put the two together. Then use modern engine management to control it all.

[LGAFF]

Threw this on the parts car, AC comprssor touched would need a spacer to run AC 15643156441564515646


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[tpepmeie]

Cool, Lee. I can only see the thumbnails. Will you email me the full size pics? I am so curious WTH they were doing here.
Todd

[WARP TEN]

Interesting Lee. Any numbers on the pieces that might lend a clue? And has Graham had a look? He would likely know about anything like this as he knows, well, everything LT5. --Bob

[LGAFF]

I asked Graham early on, I dont think he knew the background. Oddly Jerry had some parts to it .... so someone knows

[A26B]

I have/had a set of covers that look like they would have fit on the side of that intake. Never knew what they went to. Not sure I can even remember where they came from.


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