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4 bolt mains

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WVAMX View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WVAMX Quote  Post ReplyReply Direct Link To This Post Topic: 4 bolt mains
    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.
70 AMX, 70 Mark Donohue, 74 Javelin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 69 ambassador 390 Quote  Post ReplyReply Direct Link To This Post Posted: Jan/22/2011 at 8:06pm
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.
Steve Brown

Algonac, Mi.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote RSX 401 Quote  Post ReplyReply Direct Link To This Post Posted: Jan/22/2011 at 11:10pm
I've only seen one AMC V8 4 bolt main and it came out of a TA Javelin.
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote bulletpruf Quote  Post ReplyReply Direct Link To This Post Posted: Jan/23/2011 at 6:44am
71 Javelin SST, Canary Yellow, 401, T-10
66 Fairlane GT Convt, 428, 4 sp
68 GTO Convt, 455, TH400
69 Bronco, 302, 3 sp
72 Alfa Romeo GTV
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Post Options Post Options   Thanks (0) Thanks(0)   Quote amc37643 Quote  Post ReplyReply Direct Link To This Post Posted: Jan/23/2011 at 7:32am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote prostreetamx Quote  Post ReplyReply Direct Link To This Post Posted: Jan/23/2011 at 8:36am
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.
Richard Payne

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Post Options Post Options   Thanks (0) Thanks(0)   Quote bulletpruf Quote  Post ReplyReply Direct Link To This Post Posted: Jan/23/2011 at 8:54am
NASCAR Penske engine.  357 cu in. 
 
 
71 Javelin SST, Canary Yellow, 401, T-10
66 Fairlane GT Convt, 428, 4 sp
68 GTO Convt, 455, TH400
69 Bronco, 302, 3 sp
72 Alfa Romeo GTV
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Post Options Post Options   Thanks (0) Thanks(0)   Quote amc37643 Quote  Post ReplyReply Direct Link To This Post Posted: Jan/23/2011 at 8:56am
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote bulletpruf Quote  Post ReplyReply Direct Link To This Post Posted: Jan/23/2011 at 9:20am
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.
71 Javelin SST, Canary Yellow, 401, T-10
66 Fairlane GT Convt, 428, 4 sp
68 GTO Convt, 455, TH400
69 Bronco, 302, 3 sp
72 Alfa Romeo GTV
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rebel Machine Quote  Post ReplyReply Direct Link To This Post Posted: Jan/23/2011 at 9:50am
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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