Author Topic: connecting rod bolts ?  (Read 174 times)

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Offline 35chevcoupe

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connecting rod bolts ?
« on: January 29, 2018, 01:29:22 PM »
When rebuilding these engines is anyone replacing the connecting rod bolts with ARP bolts or is everyone just leaving the stock bolts in and re using them ?
John Evenson

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55 chev belair wagon 4dr
59 Buick Invicta 2 dr hd top
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Offline cwmcobra

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Re: connecting rod bolts ?
« Reply #1 on: January 29, 2018, 02:31:20 PM »
I bought ARP replacements from Carmen.  He told me they are designed for a 455, but work on a nailhead.  He said I might not be able to use the nuts and he was right.  I'll check on the part number and get back to you.

Chuck
Steve Shuman's 1965 Skylark GS Convertible: Flame Red/401/4 BBL/Automatic - BCA Archival Preservation
1965 Skylark GS Convertible: Verde Green/401/2x4 BBL/4-speed - AACA First Grand National - AACA National Award - BHA Outstanding GS - BCA Senior Gold
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Offline cwmcobra

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Re: connecting rod bolts ?
« Reply #2 on: January 29, 2018, 02:46:29 PM »
ARP 125-6001
Steve Shuman's 1965 Skylark GS Convertible: Flame Red/401/4 BBL/Automatic - BCA Archival Preservation
1965 Skylark GS Convertible: Verde Green/401/2x4 BBL/4-speed - AACA First Grand National - AACA National Award - BHA Outstanding GS - BCA Senior Gold
1965 Shelby Cobra Replica

BCA 48497
AACA 91100

Offline Brian

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Re: connecting rod bolts ?
« Reply #3 on: January 29, 2018, 03:02:30 PM »
What is the issue with the nuts?  I put a set in my 65 401 and don't remember having any issues with using the nuts.
'64 Skylark 2dr ht 4 speed, 300-4
'65 GS ht, 4 speed,2-4s,AC,PS,PB,PW,Pseat,Tilt
'66 Skylark 2dr ht 300-2 automatic
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Offline cwmcobra

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Re: connecting rod bolts ?
« Reply #4 on: January 29, 2018, 03:08:40 PM »
I think the flange and hex on them is just too large to fit in the machined pockets for the nuts.  The originals have the 12-point configuration and the ARPs have hex nuts.  Perhaps the hex takes a larger diameter to clear the pockets.

Chuck
Steve Shuman's 1965 Skylark GS Convertible: Flame Red/401/4 BBL/Automatic - BCA Archival Preservation
1965 Skylark GS Convertible: Verde Green/401/2x4 BBL/4-speed - AACA First Grand National - AACA National Award - BHA Outstanding GS - BCA Senior Gold
1965 Shelby Cobra Replica

BCA 48497
AACA 91100