Author Topic: nailhead rocker arms  (Read 601 times)

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Offline 35chevcoupe

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nailhead rocker arms
« on: May 02, 2024, 10:11:29 PM »
Hey all , wondering what everyone is doing for nailhead rocker arms . I was able to get new rocker arm shafts and i had some NOS rocker arms but not enough to finish both heads . The GM part number i,m looking for is 1187800 , thats the number on the box anyway and the last 3 digits on the rocker arm its self is 317 .
i,m using the BUICK cast aluminum valve covers so the roller rockers won't work .
John Evenson

1930 model A 4 dr sedan
35 chev coupe 2 dr Master Deluxe suicide dr,s
55 chev belair wagon 4dr
59 Buick Invicta 2 dr hd top
65 Buick GS 2 dr ht 3 spd
65 Buick GS Convertible 3 spd
1970 Cuda 440-6
71 Buick GS
84 chev 3/4 ton p/u 6.2 diesel
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Offline WkillGS

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Re: nailhead rocker arms
« Reply #1 on: May 03, 2024, 08:56:58 AM »
They are reproduced, I don't know what the quality is like.
Another option is to have them rebuilt with bushings and new tips.
There's a company in Calif which does the rebuilds:
http://www.rockerarms.com/pages/about.html

You can try contacting TA Performance or Centerville Auto to see what they have available.
Walt K
Eastern Pa

66 GS Astro Blue/blue 425 auto
66 GS Silver Mist/black 401 4 spd
66 GS Flame Red/black 401 5 spd
66 GS Saddle Mist/black 401 L76 auto
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65 GS vert Verde Green/ Saddle buckets 401 4 spd
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Offline telriv

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Re: nailhead rocker arms
« Reply #2 on: May 03, 2024, 05:56:08 PM »
The new rockers are not quality.
When you re-bush the rockers it takes material away from the most important area & makes them substanually weaker.
May be OK for weaker than normal valve springs BUT definitely not for ANY upgrades.
Just my thoughts.

Tom T.
Classic & Muscle Automotive
C/O Tom Telesco
12 Cook St.
Norwalk, Ct. 06853-1601
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203-324-6045
No answer: leave message, will call back
E-Mail: telriv@yahoo.com

Offline 35chevcoupe

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Re: nailhead rocker arms
« Reply #3 on: May 04, 2024, 11:29:00 AM »
The new rockers are not quality.
When you re-bush the rockers it takes material away from the most important area & makes them substanually weaker.
May be OK for weaker than normal valve springs BUT definitely not for ANY upgrades.
Just my thoughts.

Tom T.
thats what i have heard also Tom .
John Evenson

1930 model A 4 dr sedan
35 chev coupe 2 dr Master Deluxe suicide dr,s
55 chev belair wagon 4dr
59 Buick Invicta 2 dr hd top
65 Buick GS 2 dr ht 3 spd
65 Buick GS Convertible 3 spd
1970 Cuda 440-6
71 Buick GS
84 chev 3/4 ton p/u 6.2 diesel
Yeah there's more
There all projects