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My 1967 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: Nov/02/2018 at 8:31pm
Below are some photos of the port and chamber work. The chambers ended up at 58cc and flow is 250 on the intake side and 160 exhaust.

The head casting number is 3178453. These were the 290 head numbers and early 343s had them, too, but with the bigger 343/390 valves. Later 343s, 390s, and apparently some 1969 390 Rebel Machine heads were 3188558.

Now the heads have 2.055" and 1.650" 8mm Ferrea valves and beehive springs. The lighter valves should help the motor rev real quick and the beehive springs will be easy on the cam to ensure long life.


The heads aren't so grubby anymore... or limited to 280 HP.






Edited by 67 Marlin - Nov/11/2018 at 12:01pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 67 Marlin Quote  Post ReplyReply Direct Link To This Post Posted: Nov/11/2018 at 12:20pm
I turned the intake's four holes into a split-plenum design, radiused the ceiling corners under the carb mount, and dropped the center divider a little. This intake's casting number is 3191736; it was installed on 1968 390 motors. The runners are bigger than the 290/343 intakes and understanding is these made 15 HP when bolted onto the 290s and 343s; hopefully the mods I made will slam dunk that. In 1968, AMC made this intake a Group 19 option for the 343 and assigned it part number 3191737.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote fhpdave Quote  Post ReplyReply Direct Link To This Post Posted: Nov/15/2018 at 11:03am
That's some nice work that you're are doing there! I will be curious to hear the results when everything is done and the car is back on the road.
Old enough to know better - young enough not to care
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 67 Marlin Quote  Post ReplyReply Direct Link To This Post Posted: Nov/18/2018 at 10:49am
Originally posted by fhpdave fhpdave wrote:

That's some nice work that you're are doing there! I will be curious to hear the results when everything is done and the car is back on the road.

Thank you, Dave. Coming from somebody who has one of the nicest 1967 Ambassadors on the planet, that gets my and the Marlin's self-esteem up!


Edited by 67 Marlin - Nov/19/2018 at 7:05pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 67 Marlin Quote  Post ReplyReply Direct Link To This Post Posted: Nov/19/2018 at 7:32pm
Powder-coated the pulleys. I want to keep the motor original as possible, but the long 1967 water pump will be an exception. The 2nd owner replaced the pump before I put 1,200 miles on the motor and there's already a slight wobble in the shaft. I'm no fan of frequent water pump changes, so acquired the 1968-1972 short-style pump from Galvin's and matching short pulley from a forum member. The 1967 pump height was 5.688" and the 1968-1972 ones were 4.438." The 1968-1969 fan spacer is 1.5 inches longer than the 1967 spacer, so I ordered fan bolts that were 1.5 inches longer than the originals; because of their length, I went with Grade 8 ones.

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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/03/2019 at 9:37pm
Freshened up things under the hood. I'm excited to see how the Matador Red paint will contrast with the copper-colored 343.




Edited by 67 Marlin - Jan/06/2019 at 12:16am
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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/06/2019 at 1:00pm
Since the radiator was out during the engine compartment spraying, figured it would be a good use of time to have it checked out. The inspection revealed it was in real good shape. Don't know when it was, but it was previously serviced in Washington and I had the shop leave leave the tag on there. The car was bought new in the Seattle area and spent it's entire life there prior to me finding it, so this is a nice "certificate of authenticity" you could say. They flushed, boiled, vibra-sounded, and pressure-tested the radiator, and reinforced the sides and straightened the fins. And, new radiator paint should help to make the radiator look as good as it cools.




Edited by 67 Marlin - Jan/19/2019 at 9:21pm
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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/19/2019 at 9:13pm
And, speaking of looking good - check out these wheel covers!! The original blue paint in the center "caldera" is still there. Don't know their history, but I wonder if they were ever on a car. Understanding is that the blue paint was very thin and could crumble off from a few washes. The second photo is one of my originals, which shows no color anywhere. Found the NOS-looking ones on eBay. I've been more than fortunate in finding rare parts for this rare car, and in miraculous condition. These wheel covers are one-year only and specific to the Marlin. The 1965/1966 Rambler Marlins also had their own wheel covers, but they were slightly different - the center area looks taller and narrower to me and the paint is more of an aqua color and not this cool electric blue.




Edited by 67 Marlin - Jan/22/2019 at 7:46pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ollie Quote  Post ReplyReply Direct Link To This Post Posted: Jan/20/2019 at 8:37am
That is a fantastic find !!!

Your radiator looks good. I like the tag that the shop put on, I am going to show that to my radiator man. 

Having AMC Fun,
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1966 American Convertible -- The Rambler
1974 Postal Jeep -- Rapid Delivery
1983 Concord DL. Organ Donor for 69
1969 Rambler 220 post car."The 69" Present Project
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Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Jan/20/2019 at 8:25pm
I think those hubcaps look brand new; wow, what a find... and likewise, they found you!
Link to XRV8 Race Parts website: www.amcramblermarlin.1colony.com
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