Hi, Was looking at a collection of parts a local guy had and he had an aluminum dual quad intake along with a 2 single 4 barrel intakes the singles are X castings The dual quad looked like a Weinad maybe, but its been a long while does anyone have any pictures of one of those they could post as there were no numbers on it just a pad that was ground smooth Anyone have a few pictures of a Experimental X casting Dual quad intake I thought they were identical to the cast iron ones, but could be wrong as the one I saw the crabs were out farther than the stock so a factory air cleaner wouldn't work whichmakes me think it was a aftermarket and it wasn't a Offy I will most likely post a few pictures here in the next week The single 4's casting #X-1185976 anyone else seen or have one of these as would love to hear the story about how these came into being Thanks for any info anyone has on any of this stuff but way to start the long weekend finding these parts Regards,
Jim , Is it for a nailhead ? Buick did sell an alum 2x4 intake over the counter for the 425 around 64 -66. I don't think it had an "X" . any pictures? Bill
I think a couple guys on v8buick have the 2x4 with the x from the factory, If I remember right. I have never heard of the 1x4 factory x manifold, but that don't mean anything :grin: I would love to see what they changed
Mine, from Russ Martin...it is taller and the carbs are spaced about 1/2" further apart than stock. Wild Bill has one that is aluminum but stock config.
Good evening. I have two experimental aluminum 2 X 4 factory Buick intakes. One of them has the "X" code number (I will have get the intake out of the garage), and the other does not. The one with the "X" code has had the carb spacing relocated to stock by Buick. The other intake the carbs are set apart further than "stock". Both intakes set about 7/8" taller than the stock intakes.................the difference is in the runners.............they are a little straighter. One thing is for sure............the "X" code intake, allthough very similar in configuration, is not a simple recast of the factory cast iron unit. I have seen an aluminum single four intake, but it had the same casting as the "stock" intake. My understanding is the a Buick employee had the intake cast in aluminum on his own since Buick was producing the aluminum 215 at that time. I certainly believe there is other "stuff" out there and it would be nice if we could start a thread, maybe this one, to find out what is sitting in peoples garages. I also have the "D" cylinder heads and matching exhaust manifolds. Marty
Wow, cool thread. Love to see more pics and info. Buick was selling motors to Graymarine in both V6 and V8 configurations for marine applications. I wonder if the aluminum development was for marine purposes? Tom Mooney
Hi, I'm writing this on my phone, but the particular collection of parts is known by a few members "M---" and let me tell you all I am not looking to resell any of the items I may have bought or may purchase in the future or speculate about worth this thread was to find out information and increase everyone's knowledge level. I personally am in this hobby for the love of the cars and engineering that went into them not to rape the next person looking for a particular part over the coals, treat others on how you want to be treated enough said. I have informed the person with the collection what I know and about what was posted here and plan on doing business with him in the future and have no desire to burn any bridges with anyone including "M---" Sorry for this but sometimes things need to be set straight I do agree a sticky with the rare Buick parts would be great a then yhese parts would be saved for what they are as time goes on and more collections get sold off and possible that many rare parts are scrapped off Thanks for the info so far Regards,
Hi all, Here is a few Pictures of the Single 4 Barrel Intakes: The Painted one appears to be machined as a stock intake with heat passages The Non-Painted one was "Doc'ed" or had the Doc modification done to it who knows maybe they knew that trick back then also it appears to be port matched and no exhaust passages were machined in it the black is a carbon mark left by the Carb From what I could find out, I did see this casting number minus the "X" listed as a 64 intake not sure if that is correct as does not appear on the TeamBuick Reference page http://www.teambuick.com/reference/casting_numbers_nailhead.php Also both intakes have a 3 digit number not sure if this indicates how many might have been produced as one is 555, 556 Well thanks again Regards,
Good afternoon Jim. Wow..........incredible intake manifolds! The casting number of my aluminum 2X4 intake manifold is ""X-1174982-MP". Thanks for the pictures. Marty
I did not do a 1:1 comparison to a cast iron 2x4, vs 1x4 extrude honed port matched it was + 5; not a great comparison as the carbs were not quite dialed in for the x code
Hi all, As promised more pictures and a few comparison pictures to a standard dual quad manifold, as noted the centerlines of the 2 are 1/2" different and height is about 3/4" different one question I have not sure if it will get answered here, but why are some dual quads have the plenum machined on only one side is there a performance gain by doing this? (Martys is machined mine is not, I have seen a few dare I say 409 Chevy ones similar to Martys) Marty, If you get a chance would love to see a few pictures of those "D" cylinder heads and manifolds as I got a set of heads from the same source, so who knows with the guys collection what was in the pile never thought I would end up with these. Regards,
That mod will increase the plenum volume, which they say improves higher rpm performance. aka 'Docs mod'. Two schools of thought on that...One is opening only the top plenum to try and balance the flow of top vs bottom, and the other is to open up both of them to maximize the volume. A carb spacer may give similar results. (disclaimer... just theory, I haven't proven this!) I'm gonna guess and say the aluminum versions were easier to cast and modify for evaluation purposes. Hood clearance was an issue (especially Rivs), so height was kept to a minimum. Wish Buick had used Aluminum for production versions.... was cast iron chosen for cost or durability???
"Two schools of thought on that...One is opening only the top plenum to try and balance the flow of top vs bottom, and the other is to open up both of them to maximize the volume. A carb spacer may give similar results." I almost got a second Q-Jet manifold for a reasonable price a couple weeks ago to try the second method, but it dissapeared before I could get to it. Someday, I'm gonna answer this question!
Good morning. Here are the pics of the "D" cylinder head exhaust ports. You will notice the roof of the port is at the level of the cylinder head bolt which is as far as the engineers could go to retain brackets and accessories. Marty
Good morning. Here are pics of the exhaust manifolds showing the mating side to the cylinder head. There are two (2) versions of the "D" cylinder head exhaust manifolds. I believe there may be a slight performance difference between the two versions if you examine the photos carefully and compare the designs. Both versions fit in the chassis of my 64 Riviera, factory "KX" code dual quad 425............but very tight. Marty
Marty, Thanks for posting the Pic's of the heads/manifolds, think the ones I got were just a garden variety just ported a bunch, though no casting numbers which made me wonder see picture. Is your dual quad manifold a real rough in the inside, this one I got is very rough makes me want to take something too it to smooth it down a bit. All, Does anyone know when these manifolds were manufactured, 1st guess was 64 due to similar casting number on the single 4bbl yet all the intakes have red paint on them which makes me think 66, also does anyone know what they were testing for a particular application, race purposes etc..? Also thanks for the info on why some manifolds were modified one way vs. the other, learn a new thing. Anyone know if 3/4"-7/8" taller manifold (over stock iron dual quad) will clear a Skylark/Gran Sport hood, as would love to bolt it on one day and maybe do a few test at one of the local strips by me and compare. Thanks again for the info and pictures good to see some of these parts.
Good morning to all. Jim, I do believe you have an early design of the "D" head. The ports on your cylinder head are quite large. I did see a set of those heads some years ago..................they were painted yellow if I recall. The inside of my "X" code 2X4 intake manifold is very rough. I would not put it on an engine without first having mild port work performed to clean it up. Thanks again for the photos. Marty
