Found a strange intake modification. Why?

[Schurkey]

Yes, it's a coolant passage. Coolant flows from the thermostat area to the RR of the manifold, where the quick-coupler connects it to the heater core.

In between, it stabilizes the temperature of the intake manifold floor--hot enough to vaporize the fuel that falls to the bottom of the intake passages; cool enough to not turn the oil into crispy carbon deposits.

So if they've cut down the water passage, and ground off the bosses for the spider, it sounds like they filled the space with "something" aftermarket.

Aside from the novelty, I don't know why it matters any more. Whatever they had in mind, clearly didn't work out.

 

[Hipster]

Prime example of beereneering. lol

 

[Pinger]

Prime example of beereneering. lol

'Lets see how close to a Bowtie shape I can make on the underside of my manifold hic burp'....

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[Hipster]

'Lets see how close to a Bowtie shape I can make on the underside of my manifold hic burp'....

It's got mods, man, extensive mods, mods like you never seen before, stealth mods!!

 

[DustyRoads]

it sounds like they filled the space with "something" aftermarket.
clearly didn't work out.

Thanks for all the help. I agree whatever they tried to do, didnt work. I would've been more impressed if it had tho.

https://www.summitracing.com/parts/nos-02620nos

 

[Schurkey]

Wow.

"Noss" on a two-barrel TBI. That's like N20 on a Pinto or Corvair.

 

[Erik the Awful]

Opened up the intake from underneath to stealth-port it?

Set it next to a stock manifold and see which has more volume in the ports.

 

[frito-bandito]

You know some hillbilly did that and told all his buddies at the gas station that he did some “top secret HP modifications” to it,

raise hell praise Dale lol

 

[blackdeathmessenger]

I can only assume they were trying to either increase or decrease the plenum volume for some reason or other. As for why, I dunno. I would replace that as soon as possible with either a stock unit or the Edelbrock intake for our trucks