Installed a RamAir Intake...For a Day

Installed a RamAir Intake...For a Day

Postby ri$e*above [OP] » June 30th 2020, 11:39pm

I've been looking for a solution for the floating factory airbox/air intake on my lifted '02 Safari and decided to try out this RamAir intake. The quality of it is very good (aluminum base), but after I fitted it and closed up the hood, I didn't like the thought of how warm it gets in the engine bay, and how that could effect performance. I didn't give it a chance (only on for a day!) and I'm sure that the ECU would of adjusted to suit...but still. I was thinking of maybe running a hose up from the grill and up to the intake to force some air into it, but everything is so tight it would of been difficult to do that. I decided to go back to the factory intake for now, but ultimately want to go with a snorkel set-up.

Figured I'd share to give an idea of how it looks and the quality of it in case anyone was considering buying one.
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Re: Installed a RamAir Intake...For a Day

Postby 97cargocrawler » July 1st 2020, 4:09am

Why don't you do an efan and lose that huge shroud altogether? Opens up all sorts of space.
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Re: Installed a RamAir Intake...For a Day

Postby Bikley » July 1st 2020, 5:52am

I have contemplated taking a cutting wheel to my hood and building a cowl induction system. :D
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Re: Installed a RamAir Intake...For a Day

Postby augidog » July 1st 2020, 10:53am

I only know this: when I can merge onto a 70mph highway in seconds with confidence, I'm not thinking my (stock) engine needs more air.

that said, you did find a nicely done option. some folks might be tuned for something like this. As far as it getting hot and stuffy, how about some discrete louvers in the hood? I think that'd be a neat look too.
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Re: Installed a RamAir Intake...For a Day

Postby sixsix » July 1st 2020, 11:47am

Because... you know - GMC, what with their "Decades of Research and Engineering".
They just do not know what's going on... haha

:confused:
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Re: Installed a RamAir Intake...For a Day

Postby ri$e*above [OP] » July 1st 2020, 3:29pm

97cargocrawler wrote:Why don't you do an efan and lose that huge shroud altogether? Opens up all sorts of space.


Looking into going the Efan route...maybe a 3 row aluminium radiator too. I'm gonna do the oil cooler delete, and maybe run an external oil cooler later down the road, so wouldn't need the oil cooler hook-up on the new radiator. Are you running and after market radiator and Efan set-up?


Bikley wrote:I have contemplated taking a cutting wheel to my hood and building a cowl induction system. :D


I looked briefly at hood scoops here:

https://customvan.com/catalog/index.php ... ufrk5i49g1

I like the look of some of them.


augidog wrote:I only know this: when I can merge onto a 70mph highway in seconds with confidence, I'm not thinking my (stock) engine needs more air.

that said, you did find a nicely done option. some folks might be tuned for something like this. As far as it getting hot and stuffy, how about some discrete louvers in the hood? I think that'd be a neat look too.


Main aim was to rid the factory air intake as the 5 inch lift has put the factory airbox at an awkward angle. Wasn't really looking toward higher HP or anything like that. I was even thinking of maybe adapting the factory airbox.

I looked at louvers...some of them actually look pretty cool :thumbup:



sixsix wrote:Because... you know - GMC, what with their "Decades of Research and Engineering".
They just do not know what's going on... haha

:confused:


I would of kept the factory airbox set-up, but the 5 inch lift puts it at an awkward angle where the intake hose is no longer by the grill getting air, and the whole box is just floating on top. I was thinking of zip tying it down and maybe trying to run an extension hose from the intake back to the grill opening, but I'm also exploring other options also.
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Re: Installed a RamAir Intake...For a Day

Postby markmitchmarkmitch is online! » July 1st 2020, 3:37pm

Tried the cowl induction with a fiberglass scoop but due to the shape of the hood the fiberglass would not contour to the hood even after trying heat to attempt to bend the scoop to the shape of the hood it just cracked the body work over and over. I also tried to weld in a section of a forward facing scoop from a subaru. Looked great but I am a perfectionist to some degree and not only was my first attempt not in the center of the hood (off by 1/4 inch) but a forward facing scoop is useless till the vehicle reaches 100 mph according to nascar and National Hot Rod Association. So after doing a lot of reading and research on my part I cut a hole into the small firewall and ran a tub from there into my air cleaner. Works great!. Then just for looks I put a small non functional scoop on the hood. But I have a 350 V8 with headers and I felt the stock set up was restrictive for my engine. I doubt very much if it would help a 4.3 much but I am by no means an expert on this stuff. Just a back yard mechanic /hobbiest.
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Re: Installed a RamAir Intake...For a Day

Postby ri$e*above [OP] » July 1st 2020, 3:47pm

markmitch wrote:Tried the cowl induction with a fiberglass scoop but due to the shape of the hood the fiberglass would not contour to the hood even after trying heat to attempt to bend the scoop to the shape of the hood it just cracked the body work over and over. I also tried to weld in a section of a forward facing scoop from a subaru. Looked great but I am a perfectionist to some degree and not only was my first attempt not in the center of the hood (off by 1/4 inch) but a forward facing scoop is useless till the vehicle reaches 100 mph according to nascar and National Hot Rod Association. So after doing a lot of reading and research on my part I cut a hole into the small firewall and ran a tub from there into my air cleaner. Works great!. Then just for looks I put a small non functional scoop on the hood. But I have a 350 V8 with headers and I felt the stock set up was restrictive for my engine. I doubt very much if it would help a 4.3 much but I am by no means an expert on this stuff. Just a back yard mechanic /hobbiest.


That's what put me off the hood scoop idea...that vertical crease running right down the center of the hood! Looked like it would be a nightmare trying to align a scoop around it.

Do you have any pictures of the firewall/tub mod you did?
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Re: Installed a RamAir Intake...For a Day

Postby markmitchmarkmitch is online! » July 1st 2020, 4:41pm

Here is what I did, I cut the snout off an old air cleaner and welded it in to the firewall. I used this snout because it allows me to use a section of hose from another vehicle to match to both my air cleaner and to the firewall. Of course you can use whatever you like that will match to you air intake. Its not pretty but I don't show my engine bay off so it does not matter to me.
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Re: Installed a RamAir Intake...For a Day

Postby Ken2.7 » July 1st 2020, 8:24pm

I cut a second opening in the stock air box and ran a hose to a point below the headlight. There was hole there that I enlarged and after removing the grill I put in a sheet metal fin to direct some of the air entering the grill toward the new opening. I noticed a difference the next time I was on I-70 crossing the Continental Divide where air is rare.
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Re: Installed a RamAir Intake...For a Day

Postby ri$e*above [OP] » July 2nd 2020, 2:06am

markmitch wrote:Here is what I did, I cut the snout off an old air cleaner and welded it in to the firewall. I used this snout because it allows me to use a section of hose from another vehicle to match to both my air cleaner and to the firewall. Of course you can use whatever you like that will match to you air intake. Its not pretty but I don't show my engine bay off so it does not matter to me.


Looks like that would be effective. Did you notice any difference in MPG or anything like that?

Ken2.7 wrote:I cut a second opening in the stock air box and ran a hose to a point below the headlight. There was hole there that I enlarged and after removing the grill I put in a sheet metal fin to direct some of the air entering the grill toward the new opening. I noticed a difference the next time I was on I-70 crossing the Continental Divide where air is rare.
https://www.astrosafari.com/viewtopic.php?f=43&t=79185


That's a good idea. Did you make the factory air intake pipe on the passenger side behind the grill any bigger to match the one you made, or did you leave it as is?
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Re: Installed a RamAir Intake...For a Day

Postby markmitchmarkmitch is online! » July 2nd 2020, 4:47am

my van is not on the road due to swapping from barn doors to dutch doors, I had to build a console to mount the three switches since they never installed dutch doors on an 89 I had to rewire it for wiper/washer/ hatch release & defogger. In order to do this I had to run two relays on for the hatch release and one for the wiper/washer. Then I had to run a always hot wire to the factory type relay for the defogger then another 20 amp fused to the defogger. In order to do all this I added a large 60 amp relay from the battery to a ignition source from the stock fuse box. to the secondary fuse box. Anyway its a lot of wiring and in the process somehow I had to replace the plug to the alternator and that caused a fuse to blow and while I was trouble shooting the no start I killed the battery and my charger quit a few months back so after its all wired I will jump start it and hopefully be ale to take it for a ride.
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Re: Installed a RamAir Intake...For a Day

Postby dcsleeper » July 2nd 2020, 1:25pm

I've had seasons like that....
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Re: Installed a RamAir Intake...For a Day

Postby Ken2.7 » July 2nd 2020, 3:12pm

In answer to ri$e*above, I left the original air intake alone. However by the time I put my two transmission hoses through that hole and I lined the sharp metal edges with a split rubber hose I didn’t see how I could get enough air through there. In addition after I lifted the van 2” the air box inlet tube didn’t line up with it anymore. So I felt I needed a different intake and one that was cool air.
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Re: Installed a RamAir Intake...For a Day

Postby sixsix » July 2nd 2020, 5:35pm

markmitch wrote:my van is not on the road due to swapping from barn doors to dutch doors, I had to build a console to mount the three switches since they never installed dutch doors on an 89 I had to rewire it for wiper/washer/ hatch release & defogger. In order to do this I had to run two relays on for the hatch release and one for the wiper/washer. Then I had to run a always hot wire to the factory type relay for the defogger then another 20 amp fused to the defogger. In order to do all this I added a large 60 amp relay from the battery to a ignition source from the stock fuse box. to the secondary fuse box. Anyway its a lot of wiring and in the process somehow I had to replace the plug to the alternator and that caused a fuse to blow and while I was trouble shooting the no start I killed the battery and my charger quit a few months back so after its all wired I will jump start it and hopefully be ale to take it for a ride.

Dang, mark !!


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