Factory holes in core support for air cleaner ducts?

[dremu]

So having heard tell of same, I went digging. Looks like The General has done it again, making fifty-seven kinds of trucks, and never the kind I want where I want it =))

Here's my CUCV ('85, diesel), which has the knockout still in place:

http://www.slosh.com/ebay/85diesel.jpg

I've marked all the pix for direction and side, so you can tell what's what.

One of my spare clips has this plastic thing by the horn, which says to me that it was for an intake duct .. except it's on the driver's side? Both clips are from ~74ish trucks, one Burb, one Blazer, prolly.

http://www.slosh.com/ebay/one-74ish-support.JPG

And the other spare clip has the knockouts on both sides:

http://www.slosh.com/ebay/other-74ish-support-1.JPG

http://www.slosh.com/ebay/other-74ish-support-2.JPG

Or at least a hole on the passenger side.

Anyway, the truck I wanna do the cold air thing on is a '74, and has NO holes, and has these reinforcements in the way on the front:

http://www.slosh.com/ebay/74-radiator-support.JPG

Ignore the tranny cooler plumbing, of course.

So, what's the scoop? Is there some logic as to what trucks had the holes and what didn't? Working around those vertical members is a bear, I tell ya.

-- A

 

[mrk5]

My '84 has the knockouts on both sides. That's about all I can add. Sorry.

 

[dremu]

Ah, it's a start. I'm thinking I just gotta take the to the core on both side, like I did on the blue truck on one ... ::sigh::

-- A

 

[Metrodps]

My 87 has the one on the passenger side and will try to take a pic if you want in daytime. Just let me know.

 

[dremu]

My 87 has the one on the passenger side and will try to take a pic if you want in daytime. Just let me know.

Is it plumbed, or just a knockout?

-- A

 

[Metrodps]

It has the plastic part and the tube that goes to air cleaner. I will take pics in day light when I get up.

 

[roadnotca]

'85 Burb with 4" hole and plastic "flange" on PS, twin knock-out on DS.

 

[FOR MUD]

My 81 has one on each side too. The pass side still has the plate on it and the drivers side was open. I ended up putting my PS cooler behind the open one so it gets good air flow.

 

[HarryH3]

I put an '88 front clip on my '75, so it now has the holes on both sides.

 

[badmix]

I popped the drivers side one out and now use both sides for some Aux 55watt lights. lol. If I ever dual the dual intake thingy, ill jus move/remove the lights.

 

[k20]

Now that is a good idea.......hmmmmmm

 

[roadnotca]

I popped the drivers side one out and now use both sides for some Aux 55watt lights. lol. If I ever dual the dual intake thingy, ill jus move/remove the lights.

Bar-B-Que grille.

 

[dremu]

It has the plastic part and the tube that goes to air cleaner. I will take pics in day light when I get up.

Thanks ... I'm curious how it's *supposed* to be.

My '74 K5 now looks like this ...

But on the sixpack I wanna do the dual snorkel -- healthy bigblock -- so I'm still on that one.

-- A

 

[roadnotca]

4" clothes dryer hose fits on that snorkel, squeezed.

 

[dremu]

4" clothes dryer hose fits on that snorkel, squeezed.

Yeah, but it was a bit big, and the aluminum stuff I'm using crushed something fierce, so the coupla bucks for the rubber coupler is worth it to me to make it look nicer

Sealed up the rubber coupler with some fireplace mortar, supposed to be good to 2000*, should be fine.

-- A

 

[roadnotca]

Yeah, but it was a bit big, and the aluminum stuff I'm using crushed something fierce, so the coupla bucks for the rubber coupler is worth it to me to make it look nicer

Sealed up the rubber coupler with some fireplace mortar, supposed to be good to 2000*, should be fine.

-- A

I'm talkin the light foil stuff with the single spiral wire.
Meh, I'll edit/post a pic.

 

[dremu]

I'm talkin the light foil stuff with the single spiral wire.
Meh, I'll edit/post a pic.

Oh yeah, I know the stuff. I donno how well it would fare in the engine compartment though, so I tried this other stuff.

-- A

 

[roadnotca]

Its cheap and easy. Its also quieter.

 

[dremu]

Yup, that's the stuff. The stiffer-walled stuff I used was maybe two bucks more ... but you think the flexier stuff is quieter? 'Cuz it's acoustically softer? I worry about it tearing ... though I s'pose anything is better than that paper crap that GM used for the stovepipe riser, etc.

-- A

 

[roadnotca]

Yup, that's the stuff. The stiffer-walled stuff I used was maybe two bucks more ... but you think the flexier stuff is quieter? 'Cuz it's acoustically softer? I worry about it tearing ... though I s'pose anything is better than that paper crap that GM used for the stovepipe riser, etc.

-- A

You may be a natural Accoustics Engineer! My theory is its quieter because it flexes instead of echoes. I haven't had any problems with it being fragile, unless I mess with it to get to something else.