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My 1967 AMC Marlin Thread

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67 Marlin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 67 Marlin Quote  Post ReplyReply Direct Link To This Post Posted: Jan/22/2022 at 1:00am
Originally posted by maximus7001 maximus7001 wrote:

What would be the difference between the 3191736 and 3191737 ?

Same thing. The casting number on the manifold itself is 3191736. The part number (as it was listed in the parts catalog) was 3191737. When the 390 came out, AMC made that manifold available as a dealer performance option for the 290 and 343 motors. A person could order the iron OE 390 manifold by its Group 19 catalog part number in the same way they could the aluminum high-rise R4B for the 290, 343, and 390 motors. Unlike the R4B, hood clearance wasn't a concern with the OE 390 manifold; it has bigger runners than the 290 and 343 manifold but it's no taller. Threads on the forum have stated the 390 manifold was worth 10 to 15HP when installed on the smaller motors even in stock form.

I machined my 390 manifold to have the open plenum; it was originally four holes like the OE manifold.


Edited by 67 Marlin - Dec/31/2023 at 7:56pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 67 Marlin Quote  Post ReplyReply Direct Link To This Post Posted: Jun/24/2022 at 8:50am
My Stockton custom AMC eight-slot wheels are on the Marlin and I like them! More photos below.


The centers were put in custom wheel hoops. The back are 15x8 with 4-1/4 backspacing. The front are 15x7 with 3-5/8 backspacing. Semi-gloss black powder coat. Shiny new center caps and trim rings. 255/60 tires in the rear and 235/60 in the front. Everything clears nice around the suspension and front disc brakes and mandrel exhaust system. All the steering and suspension parts except the front springs were replaced, and it has a rear sway bar, so the wider rubber enhanced the handling even more. The 14x5.5 OE wheels are also in powder coat but in boxes along with the OE wheel covers. I know black is getting to be really contempo these days but I like it on these wheels, and I think it'll compliment the red nicely...someday.





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Post Options Post Options   Thanks (0) Thanks(0)   Quote WARBED Quote  Post ReplyReply Direct Link To This Post Posted: Jun/24/2022 at 10:52am
The wheels make it look way more aggressive. very well done. Had Stockton do a few wheels for me. 14x6 72 Rallys to 15x10 had them on a 72 AMX and then on my 72 Matador. they do good work and fit snug but Dang it looked mean.
59 American 2dr S/W. 70 390 AMX. 70 232 javelin. Kelvinator fridge ice cold beer storage.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 67 Marlin Quote  Post ReplyReply Direct Link To This Post Posted: Oct/28/2023 at 7:54pm
Fuel consumption upgrade complete! Four photos below. Installed the custom Mark Whitener (Lightning Racing Carbs) 750 annular double pumper with an ME Wagner adjustable PCV valve. The souped up 390 intake was upgraded to the RPM Air Gap. It revs noticeably quicker over 4000, and thinking I might want to install Pypes race mufflers now! A one-inch spacer is the most that’ll fit under the hood with a three-inch air filter. Used a spacer with a PCV port so I could route the PCV under the primary barrels how I like to. The adjustable PCV along with all the adjustable bleeds and jets makes it easier to tune a sweet rich idle and as lean as you want for highway cruising. I use BLP stuff. The motor has just over 3,000 miles since it was rebuilt, it’s breaking in great!






Edited by 67 Marlin - Dec/31/2023 at 8:01pm
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