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Joined: Feb 2002
Posts: 155
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Feb 2002
Posts: 155 |
Back in the 60's Chevrolet made a head bolt with a hold in the center so as to oil the rocker arms. Do they still make such a bolt and what is the part number? Thanks
ROSS
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The hollow head bolt was part # 3764578. It was required when a 1959 or later head was installed on a 1955-58 engine. It reduced to full pressure oiling to the rocker arms to restricted flow.
We also used to put them in some engines when the oil passage between the bolck and head would get plugged-up.
The 1959 and up rocker arms required more oil pressure because the grove inside the rocker arm was off-set to one side .
Last edited by Chev Nut; 03/06/10 11:55 PM.
Gene Schneider
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Joined: Feb 2002
Posts: 155
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Feb 2002
Posts: 155 |
Thanks Gene I used to work at a Chevy garage when I was young and remember selling these bolts.
ROSS
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
I remember selling the bolts but don't remember being young 
Gene Schneider
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Joined: Feb 2008
Posts: 3,801 Likes: 1
ChatMaster - 3,000
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ChatMaster - 3,000
Joined: Feb 2008
Posts: 3,801 Likes: 1 |
I remember selling the bolts but don't remember being young Well, let me tell you ...I remember .... aw nuts, well I thought I remembered. 
1951 Chevy Styleline Deluxe 2 door sedan / purchased from second owner 6-19-2000.
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