Buick Dual Quad 2x4 Intake Manifold OEM X-PERIMENTAL 401 425 Factory !RARE!

[Loren At 65GS]

 NOT Mine!

  Saw this on eBay.

Selling an impossible to find original factory EXPERIMENTAL X-Code X-1357106 Buick 401/425 Dual Quad Intake Manifold.  This intake has some stories with it that I am happy to share.  I have been lucky enough to own this intake for the last 15 years or so.  I purchased it directly from the Flint, MI Buick Engineer who saved it from the scrap pile.  I have seen roughly 4 or 5 original X-code 401/425 intakes online over the years I have had this one and mine is probably the second to last prototype before they finalized the design for production.  I have seen the one after mine and it is basically an aluminum version of the stock iron dual quad intake.  Mine was used for final revisions of the coil bracket location and the AC bracket boss(both are in what would become, OEM standard dual quad locations).  This is an aluminum 2x4 Buick intake manifold and will work with all stock dual quad brackets/carbs/air cleaner. 

 https://www.ebay.com/itm/403823037634?hash=item5e05ba8cc2:g:N9MAAOSwV9xi8cIW&vxp=mtr

Loren

[jmos4]

Hi,

Neat piece, a few things not noted, the carb centerline are farther apart so a stock air cleaner won't fit and it is 7/8" taller than a cast iron one, so hood clearance maybe a issue

If you need references on comparison, look up my old post as posted years ago

Good luck to the seller as very steep price at 6500
Regards,
Jim

[Loren At 65GS]

Hi,

Neat piece, a few things not noted, the carb centerline are farther apart so a stock air cleaner won't fit and it is 7/8" taller than a cast iron one, so hood clearance maybe a issue

If you need references on comparison, look up my old post as posted years ago

Good luck to the seller as very steep price at 6500
Regards,
Jim

 Certainly a neat item if for nothing more than the history. 

http://65gs.com/board/index.php/topic,1743.msg11370.html#msg11370

 Loren

[jmos4]

Thanks Loren for finding the post, was having issues trying to post on my phone.

Also forgot to mention it is neat to see someone added the dashpot and coil mounts

Regards,
Jim

[GS66]

Very cool! I got to see some rare Buick factory parts at the Dennis Manner display in BG! Cool stuff indeed!

[Loren At 65GS]

Here’s a crazy thing. Another early experimental 2x4 manifold shows up. This one is for the 322 and 264 engine is also on eBay.

 Loren

[jmos4]

Hi again,

Loren got a link as I only see a Edmunds 264/322 and this prototype also for a 264/322:

https://www.ebay.com/itm/53-54-55-56-BUICK-NAILHEAD-GM-PROTOTYPE-EXPERIMENTAL-DUAL-QUAD-INTAKE-MANIFOLD-/265545249062?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

Regards,
Jim

[Loren At 65GS]

Hi again,

Loren got a link as I only see a Edmunds 264/322 and this prototype also for a 264/322:


https://www.ebay.com/itm/53-54-55-56-BUICK-NAILHEAD-GM-PROTOTYPE-EXPERIMENTAL-DUAL-QUAD-INTAKE-MANIFOLD-/265545249062?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

Regards,
Jim

 Caught me, Jim.  I was in the doctors waiting area using my phone. it was another experimental GM manifold but for the 322 and 264.
 
Numbers on the intake X-1169802
  Loren