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Built AMC 401 Value?? |
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Jrtoffroad 
AMC Fan 
Joined: Nov/09/2020 Location: Colorado Status: Offline Points: 2 |
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 Topic: Built AMC 401 Value??Posted: Nov/09/2020 at 11:16pm |
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Hey guys, sorry if this is in the wrong place. I'm thinking about selling the 401 in my CJ7 and curious what it might reasonably be worth.
-Stock forged rods and crank -Wiesco forged flat top pistons (0.030 over) -10.25:1 compression -Fully balanced rotating assembly -Ported edelbrock heads - upgraded with beehives and light weight retainers -1.6 ration Scorpion Races series roller rockers -Edelbrock Proflo 4 efi with victor jr intake portmatched to heads -Ported oil pump with restricted pushrods (excellent oil pressure) -New timing cover -ARP main Studs, head bolts, Rod bolts -Custom crane solid lifter cam with Comp EDM lifters (244/252, 110LSA, 0.569/0.572) It's an awesome engine and has been a lot of fun. Probably only has about 10k miles on it. It ran Low 12's at 106mph a couple weeks ago with a 8500ft DA (Pueblo CO) in an all steel CJ7 trail jeep. Put down about 380hp and 400 ft-lbs on 35" tires with old cam and springs. If I sell it I'll let my upgraded TH400 go with it. Thanks for your input! Edited by Jrtoffroad - Nov/10/2020 at 9:53am |
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XJ6
AMC Nut 
Joined: Jul/09/2020 Location: SW Status: Offline Points: 293 |
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Posted: Nov/11/2020 at 2:48pm |
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IMO Probably have a better chance of selling and getting a fair price if you invest in freshening up the engine with new bearings rings and seals. Racing motors typically are torn down every season and then you will be confident what your selling has no hidden issues
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Trader
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Joined: May/15/2018 Location: Ontario Status: Offline Points: 6881 |
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Posted: Nov/11/2020 at 7:18pm |
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It's only worth what someone will pay for it. Put it in the Forum for sale section. I agree with XJ6, fresh rings and bearings will add more value, IF you can do this yourself!
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i6cj7
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Joined: Feb/20/2018 Location: virginia Status: Offline Points: 138 |
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Posted: Nov/19/2020 at 9:07pm |
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Why would it need new rings and bearings? It's only got 10k miles on it. And he hit the track once. He said it's a trail jeep.
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XJ6
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Joined: Jul/09/2020 Location: SW Status: Offline Points: 293 |
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Posted: Nov/20/2020 at 11:10am |
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A "trail" Jeep that runs low 12s is a race motor. And 10k miles is equivalent to 40k 1/4 mile passes. I wouldnt buy that motor or sell it without knowing what it looked like inside
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JGRANTAMX
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Joined: Jun/02/2017 Location: Maine Status: Offline Points: 1694 |
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Posted: Nov/20/2020 at 11:36am |
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I will throw out a guess value this would be after an inspection removing the oil pan and valve covers checking bearings, looking at what can be seen of piston skirts and cylinder walls also no issues with valve train. With fresh rings, bearings and chain I agree with others higher value freshened up. Good running used 401 with decent internal parts and good oil pressure. $3500 Used good condition Edelbrock EFi system is worth up to half of new cost. $1000 Minor mods plus good used transmission that a buyer needs. $500 Total $5K J |
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bcsideshow
Supporter of TheAMCForum 
Joined: May/19/2010 Location: Kenosha Status: Offline Points: 1228 |
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Posted: Nov/20/2020 at 11:52am |
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Sounds like a great motor i'd like to have. I'm in agreement with J grant that around 5K seems fair. Parting it out would probably get you the most...
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1969 SCRambler "B"
1970 AMX 390 Auto 1968 AMX 390 Auto 1970 Rebel Machine Project 1969 AMX 390 4SPD Project 1969 AMX 390 Auto Project 1969 Javelin 390 project 1997 Cherokee lifted 1998 TJ Lifted |
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i6cj7
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Joined: Feb/20/2018 Location: virginia Status: Offline Points: 138 |
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Posted: Nov/20/2020 at 9:46pm |
Well it is a 401, so it's not like that beast has to even work hard to move the jeep. Even my brothers CJ7 with a mild 327 would lift the front tire with 35s and 4.10s. A CJ7 only weighs about 3300lbs. So any decent V8 in it will make it seem like a rocket ship. Besides maybe a pedestrian 304 I'd venture to say you could stick a bone stock 6.0 LS in a CJ and it'd do 0 to 60 in around 4 seconds How is 10k street/trail miles equivalent to 40k 1/4 mile passes? Because of the hours idling?
Edited by i6cj7 - Nov/20/2020 at 9:48pm |
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Boris Badanov
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Joined: Dec/14/2013 Location: NH USA Status: Offline Points: 4209 |
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Posted: Nov/21/2020 at 11:39am |
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Very impressive 1/4 numbers and trap speed for that altitude.
I will not suggest BS is spoken here but at 4600 feet the real pressure ratio suffers and the air mass drops quite a bit. A loss of about 15% at 4600 feet in altitude for an un supercharged engine should be expected. That said any good running 401 is worth 4 or 5 K Not that I don't believe your story... |
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Gremlin Dreams
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Boris Badanov
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Posted: Nov/22/2020 at 9:48am |
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Just for giggles..... Pueblo Motorsports Park is at 4913 feet altitude. IMO keep it in the Jeep so you can demonstrate it.
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Gremlin Dreams
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XJ6 wrote: