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2 bolt main convert to 4 bolt main. |
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435853
AMC Fan Joined: Nov/21/2009 Location: Brookfield,CT Status: Offline Points: 25 |
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What you are saying is don't do this to a 390?
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SKeown
AMC Addicted Joined: Jul/30/2009 Location: Texas Status: Offline Points: 3085 |
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If you have $600.00 to waste, then do it. That's as clear as I can say it.
SKeown
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435853
AMC Fan Joined: Nov/21/2009 Location: Brookfield,CT Status: Offline Points: 25 |
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That puts a whole new meaning on it.
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FuzzFace2
AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10343 |
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From what I can see in the 2 pictures and whay they say "not on a 390 block" is the ends of the Progrem caps look like they are "hanging" in the air. If that is the case then the caps would be distorted as the outer bolts dont clamp to the block like the stock ones do.
Then again it could be the picture but if the program caps dont have a machined surface to sit on then it is a wate also in my book.
Dave ----
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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17tamx
AMC Addicted Joined: Dec/23/2008 Location: Peoria, AZ Status: Offline Points: 1170 |
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Yes, you are correct that the outer section of webbing on the 390 will not support the caps at the outer bolts. ARP Chevy Big Block 2 bolt main studs without windage tray provisions are the ones we use for our 390 and 401's.
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Kirk P. Fletcher
70 AMX BBG w/Shadow 390 4sp 71 SC360 Wild Plum Ram Air 4sp 67 Rogue Convert 343 4sp 66 Rogue Hardtop 290 Auto 66 440 Convert 232 Auto |
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435853
AMC Fan Joined: Nov/21/2009 Location: Brookfield,CT Status: Offline Points: 25 |
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I guess I will leave the block just the way it is.all I want to get out of this engine is 500hp constant.nothing over or close to 600 so I guess I will be safe enough.
Thanks for all your help.I know I saved alot of money by your information. Rich.
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BrunoBZH
AMC Fan Joined: Mar/19/2012 Location: Pontivy FRANCE Status: Offline Points: 23 |
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Hi,
Can the "Chevy Big Block 2 bolt main studs" be used for the 68' 390's?
I found ARP bolts for head but not for main....
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SKeown
AMC Addicted Joined: Jul/30/2009 Location: Texas Status: Offline Points: 3085 |
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Get Milodon brand for AMC engines.
SKeown
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17tamx
AMC Addicted Joined: Dec/23/2008 Location: Peoria, AZ Status: Offline Points: 1170 |
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Yes, the ARP CBB 2 bolt 1/2" dia main studs will work on 290, 304, 343, 360, 390 & 401 AMC Engines.
I am sure that Steve likes the Milodon, I like the ARP.
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Kirk P. Fletcher
70 AMX BBG w/Shadow 390 4sp 71 SC360 Wild Plum Ram Air 4sp 67 Rogue Convert 343 4sp 66 Rogue Hardtop 290 Auto 66 440 Convert 232 Auto |
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SKeown
AMC Addicted Joined: Jul/30/2009 Location: Texas Status: Offline Points: 3085 |
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For some reason the Milodon AMC stud kit differs from Milodon's BBC 2 bolt main stud kit. In any event Summit list the AMC version for $72.00 and the BBC for $70.00. I've used Milodon's before and liked their quality and fit.
SKeown
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