Factory Aluminum Intake? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Slonaker · 10-18-2005, 01:21 PM

I was looking around in my Dad's garage last night for an intake to put on the crate motor I will be buying soon. I found what appears to be a late model GM four barrel intake. I have not inspected it really closely, but it appears to be just like the cast iron one on my truck.

I remember my Dad talking about it years ago. He said he was told it was from a TBI V8, but all of those I have seen looked like a two barrel manifold.

What was this used on? Will it work on my truck? I'm not trying to maximize performance, just save a little weight it I can do it for free. Is it at least as good as the cast iron one?

I can take some pics, or post any numbers that might be on it, if necessary.

Thanks,

Slonaker

see ten · 10-18-2005, 04:30 PM

My brother in law had a Z28 with a factory aluminum intake on it. I don't know what else they came on or if they have any benefit.

86 GMG · 10-18-2005, 04:52 PM

they came out on z28's like see ten said as far a benefit i believe they are barelly taller deck then cast but in not sure and then the basic aluminum light weight and less heat. you can really make some money with them if you know anyone that runs street stock dirt track they like to use trhem b/c they look and (are) factory i have two of them in my garage that a guy gave me when he needed his garage cleaned out so he could move ( i cleaned it out and came home with alot of goodies)

Slonaker · 10-18-2005, 05:14 PM

I'm really not worried about performance gains. It will be on a stock engine. I'm just thinking that saving a little on weight can't hurt, and the price is hard to beat since it is free. Also, any part I don't have to re-use on the new engine will result in less down time during the swap. I just want to make sure it will work.

I guess I need to look at it closely and compare it to what I already have. Since it is a factory, I would think that it should work okay.

Slonaker

Jonboy · 10-19-2005, 12:33 PM

That intake will work fine on your truck. They were common on the L69 engines (305 HO) in the Camaros and Monte Carlo SS cars of the mid to late 80's. It is basically an aluminum copy of the cast iron intake on your truck. They are prone to corrosion in the coolant passages. If they look good, I would say run it. Not sure if there will be any performance gains, though.

SSC's76 · 10-19-2005, 02:47 PM

Basicly the same as a cast iron one, just weighs less. They came on trucks & EL Caminos too. If you just want a stock setup the cast iron intake would be better since it's less likely to warp, corrode or leak. There is a ZZ3 and ZZ4 version there just a tad taller then the stock aluminum manifold, I have the ZZ4 on my 76, it's not too impressive IMO.

Take a picture of the manifold and one of the center bolts it may not bolt right on your crate engine.

**JIMs70GMC** · 10-19-2005, 03:41 PM

What everybody else said, I took one off of a 305 and it's taking up space in my attic.

Slonaker · 10-19-2005, 03:43 PM

My cast iron intake has all of the emission controls hooked up on it with the maze of vacuum lines. My hope is to leave it all intact, including the old carb, and put it in the attic in case San Antonio decides to start doing emissions inspections before it becomes exempt.

I had not thought about corrosion being a problem with aluminum. I'll have to see how it looks. I have another cast iron intake also, but at first glance, it looks like it may be a little different from mine, especially around the EGR valve (which I would like to keep using). I guess I'll have to look at it a little closer, and see if it is the same. If not, I might just go pick one up at a junkyard. Surely they can't cost much...

When you say center bolts, are you talking about the intake manifold or the exhaust manifolds? I have already been told that the exhaust manifolds my not work with a 350. If they don't, I will probably go with some angled ram's horns.

Slonaker

Jonboy · 10-19-2005, 04:50 PM

The center 4 bolts on the intake changed when the heads went to center bolt valve covers in 87. Your exhaust manifolds will work just fine either way.

bodydropped · 10-20-2005, 11:09 AM

my dad has a factory 4bbl intake that came off a 300hp 327 but its cast and u can bolt a holley on the intake with no problem

Slonaker · 10-20-2005, 11:14 AM

Thanks for the info, guys.

Slonaker

10-18-2005, 01:21 PM	#1
Slonaker Insert Witty Text Here Join Date: Oct 2002 Location: San Antonio, TX Posts: 3,415	Factory Aluminum Intake? I was looking around in my Dad's garage last night for an intake to put on the crate motor I will be buying soon. I found what appears to be a late model GM four barrel intake. I have not inspected it really closely, but it appears to be just like the cast iron one on my truck. I remember my Dad talking about it years ago. He said he was told it was from a TBI V8, but all of those I have seen looked like a two barrel manifold. What was this used on? Will it work on my truck? I'm not trying to maximize performance, just save a little weight it I can do it for free. Is it at least as good as the cast iron one? I can take some pics, or post any numbers that might be on it, if necessary. Thanks, Slonaker __________________ '86 Chevy C10 (Sold 04/19/13 ) Stock '01 Silverado

10-18-2005, 04:30 PM	#2
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,074	Re: Factory Aluminum Intake? My brother in law had a Z28 with a factory aluminum intake on it. I don't know what else they came on or if they have any benefit.

10-18-2005, 04:52 PM	#3
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	Re: Factory Aluminum Intake? they came out on z28's like see ten said as far a benefit i believe they are barelly taller deck then cast but in not sure and then the basic aluminum light weight and less heat. you can really make some money with them if you know anyone that runs street stock dirt track they like to use trhem b/c they look and (are) factory i have two of them in my garage that a guy gave me when he needed his garage cleaned out so he could move ( i cleaned it out and came home with alot of goodies) __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

10-18-2005, 05:14 PM	#4
Slonaker Insert Witty Text Here Join Date: Oct 2002 Location: San Antonio, TX Posts: 3,415	Re: Factory Aluminum Intake? I'm really not worried about performance gains. It will be on a stock engine. I'm just thinking that saving a little on weight can't hurt, and the price is hard to beat since it is free. Also, any part I don't have to re-use on the new engine will result in less down time during the swap. I just want to make sure it will work. I guess I need to look at it closely and compare it to what I already have. Since it is a factory, I would think that it should work okay. Slonaker __________________ '86 Chevy C10 (Sold 04/19/13 ) Stock '01 Silverado Last edited by Slonaker; 10-18-2005 at 05:18 PM.

10-19-2005, 12:33 PM	#5
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: Factory Aluminum Intake? That intake will work fine on your truck. They were common on the L69 engines (305 HO) in the Camaros and Monte Carlo SS cars of the mid to late 80's. It is basically an aluminum copy of the cast iron intake on your truck. They are prone to corrosion in the coolant passages. If they look good, I would say run it. Not sure if there will be any performance gains, though. __________________ 1974 Jimmy- 5.3/4L80e/NP241

10-19-2005, 02:47 PM	#6
SSC's76 No No Join Date: Jun 2005 Location: Pueblo Colorado Posts: 1,781	Re: Factory Aluminum Intake? Basicly the same as a cast iron one, just weighs less. They came on trucks & EL Caminos too. If you just want a stock setup the cast iron intake would be better since it's less likely to warp, corrode or leak. There is a ZZ3 and ZZ4 version there just a tad taller then the stock aluminum manifold, I have the ZZ4 on my 76, it's not too impressive IMO. Take a picture of the manifold and one of the center bolts it may not bolt right on your crate engine. __________________ 1976 Custom Deluxe SWB Med FMB.3/4 Drop. Gen VI 454, Muncie HD 3 speed With Modified OE Hurst Shifter, 3.73 12 bolt, GMPP HO roller cam, Hooker headers, Performer intake with modified Q-jet, Accel distributor. Best 1/4 12.3 @108. Funnest run 19.84 @88 full 1/4 mile burn out. 1997 K1500 ext cab 5.7 stock except muffler

10-19-2005, 03:41 PM	#7
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Re: Factory Aluminum Intake? What everybody else said, I took one off of a 305 and it's taking up space in my attic. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

10-19-2005, 03:43 PM	#8
Slonaker Insert Witty Text Here Join Date: Oct 2002 Location: San Antonio, TX Posts: 3,415	Re: Factory Aluminum Intake? My cast iron intake has all of the emission controls hooked up on it with the maze of vacuum lines. My hope is to leave it all intact, including the old carb, and put it in the attic in case San Antonio decides to start doing emissions inspections before it becomes exempt. I had not thought about corrosion being a problem with aluminum. I'll have to see how it looks. I have another cast iron intake also, but at first glance, it looks like it may be a little different from mine, especially around the EGR valve (which I would like to keep using). I guess I'll have to look at it a little closer, and see if it is the same. If not, I might just go pick one up at a junkyard. Surely they can't cost much... When you say center bolts, are you talking about the intake manifold or the exhaust manifolds? I have already been told that the exhaust manifolds my not work with a 350. If they don't, I will probably go with some angled ram's horns. Slonaker __________________ '86 Chevy C10 (Sold 04/19/13 ) Stock '01 Silverado

10-19-2005, 04:50 PM	#9
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: Factory Aluminum Intake? The center 4 bolts on the intake changed when the heads went to center bolt valve covers in 87. Your exhaust manifolds will work just fine either way. __________________ 1974 Jimmy- 5.3/4L80e/NP241

10-20-2005, 11:09 AM	#10
bodydropped Registered User Join Date: Jan 2005 Location: beaumont,tx Posts: 757	Re: Factory Aluminum Intake? my dad has a factory 4bbl intake that came off a 300hp 327 but its cast and u can bolt a holley on the intake with no problem __________________ http://img.photobucket.com/albums/v5...ropped/sig.jpg

10-20-2005, 11:14 AM	#11
Slonaker Insert Witty Text Here Join Date: Oct 2002 Location: San Antonio, TX Posts: 3,415	Re: Factory Aluminum Intake? Thanks for the info, guys. Slonaker __________________ '86 Chevy C10 (Sold 04/19/13 ) Stock '01 Silverado



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