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Availability of Offy Quadrajet Intake

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304-dude View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 304-dude Quote  Post ReplyReply Direct Link To This Post Posted: Apr/17/2021 at 5:22pm
Originally posted by Sonic Silver Sonic Silver wrote:

I think many people have been confused by 2 totally different intakes with such similar names. They were called Offenhauser 360, and Offenhauser Dual Port 360. They were both legitimate 360 degree single plane manifolds with 2 different purposes. I don't believe that Offy made an actual dual plane 180 degree intake. A lot of people confused dual port with dual plane, and still do.


Ah, i can see why... though I do believe my 360 had a notch in the divider for some equalization. Its been so long now, could be a mix of info pass on since then that overlapped.

None the less the spread bord designs were not common, and very rare to come by now these days.
71 Javelin SST body
390 69 crank, 70 block & heads
NASCAR SB2 rods & pistons
78 Jeep TH400 w/ 2.76 Low
50/50 Ford-AMC Suspension
79 F150 rear & 8.8 axles
Ford Racing 3.25 gears & 9" /w Detroit locker
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Sonic Silver View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sonic Silver Quote  Post ReplyReply Direct Link To This Post Posted: Apr/17/2021 at 5:32pm
Originally posted by 304-dude 304-dude wrote:

Originally posted by Sonic Silver Sonic Silver wrote:

I think many people have been confused by 2 totally different intakes with such similar names. They were called Offenhauser 360, and Offenhauser Dual Port 360. They were both legitimate 360 degree single plane manifolds with 2 different purposes. I don't believe that Offy made an actual dual plane 180 degree intake. A lot of people confused dual port with dual plane, and still do.


Ah, i can see why... though I do believe my 360 had a notch in the divider for some equalization. Its been so long now, could be a mix of info pass on since then that overlapped.

None the less the spread bord designs were not common, and very rare to come by now these days.
Mine is a square bore, but it does have a notch toward the rear, too. I always thought that was done to clear the Holley 3 barrel 950 carb, same as with the R4B. Of course with the spread bore, you wouldn't be using the 3 barrel carb. It may be for some equalization.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sonic Silver Quote  Post ReplyReply Direct Link To This Post Posted: Apr/17/2021 at 6:18pm
Originally posted by Buzzman72 Buzzman72 wrote:

Anyone know of someplace that has the Offenhauser 6057-DP single 4-barrel spread bore intake in stock?
www.whiteowlspeed.com shows in stock for 67-69 with Quadrajet for $568.70. Don't know if it's current.

Edit: I see that you asked for the #6057 that must be 70 up. Sorry. I guess you could call them. They stock some Offy manifolds.
 





Edited by Sonic Silver - Apr/17/2021 at 6:29pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote amxstv Quote  Post ReplyReply Direct Link To This Post Posted: Apr/18/2021 at 8:35am
i have an offy 360 dual port...but not spread bore...i think i have a spreadbore adaptor tho...was gonna list it on ebay along with a 2131 edelbrock performer i have...pm if you're interested...i offy is like new..amxstv
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