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4 bolt mains |
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WVAMX
AMC Apprentice Joined: Oct/18/2010 Location: Weston, WV Status: Offline Points: 127 |
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Posted: Jan/22/2011 at 7:49pm |
I have read articles that a Mark Donohue Javelin had 4 bolt mains in a 360. I have seen several 360's torn down but non had 4 bolt mains. Did they or didn't they? If they did then that should be a good indicator that a Javelin SST is a Donohue.
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70 AMX, 70 Mark Donohue, 74 Javelin
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69 ambassador 390
Supporter of TheAMCForum Joined: Nov/22/2009 Location: Peoria, AZ Status: Offline Points: 3539 |
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The race ones had the 4 bolts and a trans am block. The stock ones did not. There may have been a few released to the public for homologation reasons but I have never seen one in a consumer vehicle.
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Steve Brown
Algonac, Mi. 69 Ambassador sst 390 84 Grand Wagoneer 69 Cougar XR7 65 Fairlaine 500XL 79 F-350 Super Camper Special |
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RSX 401
AMC Addicted Joined: Oct/21/2010 Location: Southeast Texas Status: Offline Points: 689 |
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I've only seen one AMC V8 4 bolt main and it came out of a TA Javelin.
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I'll follow these lines a little ways more,
Until I can find what I'm looking for. With the pedal to the metal, I'm gaining my speed. Riding down low in my AMC..... |
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bulletpruf
Supporter of TheAMCForum Joined: Oct/06/2008 Location: San Antonio, TX Status: Offline Points: 1405 |
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Please check out my YouTube channel for vintage car and truck shenanigans! https://www.youtube.com/@THEBULLETPROOFGARAGE
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amc37643
AMC Apprentice Joined: Jun/02/2010 Status: Offline Points: 91 |
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Bulletpruf is this block standard in web thickness at the bottom for use of these 4 bolt mains or thicker? reason for asking some say using 4 bolt mains weakens the standard blocks.
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prostreetamx
AMC Addicted Joined: Jul/15/2007 Location: Las Vegas, NV Status: Offline Points: 1532 |
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I've only seen 401's with the wide flange that could be drilled for 4 bolt mains. There was a 4 bolt provision service block offered at one time, but I have never seen it myself. My 360 Donohue did not have this block.
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Richard Payne
Las Vegas,NV 72 5.7 Hemi Javelin 77 Prostreet 401/727 AMX, [/URL] |
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bulletpruf
Supporter of TheAMCForum Joined: Oct/06/2008 Location: San Antonio, TX Status: Offline Points: 1405 |
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NASCAR Penske engine. 357 cu in.
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Please check out my YouTube channel for vintage car and truck shenanigans! https://www.youtube.com/@THEBULLETPROOFGARAGE
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amc37643
AMC Apprentice Joined: Jun/02/2010 Status: Offline Points: 91 |
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Was the 401 block a standard 401 (run of the mill type as would have been in full size JEEP) or something different?
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bulletpruf
Supporter of TheAMCForum Joined: Oct/06/2008 Location: San Antonio, TX Status: Offline Points: 1405 |
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Believe it was a service replacement block w/no CI cast into it. All cylinders sleeved; presumably to bring CI down for NASCAR. Crank is a destroked 401 crank full of heavy metal.
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Please check out my YouTube channel for vintage car and truck shenanigans! https://www.youtube.com/@THEBULLETPROOFGARAGE
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Rebel Machine
AMC Addicted Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
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Wow, interesting piece of racing history you have there. Looks like a few oiling and cooling modifications were made. Also looks like rod 3 or 4 let go.
Is there a casting number on the block?
-Steve-
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