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Old 02-06-2026, 12:43 PM
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Quote:
Originally Posted by 66_Cat_Jon View Post
My mistake, when you asked if the studs were shouldered I thought you were referring to the "bottleneck" area like on the non-adjustable studs. The rocker studs I'm using have the top and bottom separated by the enlarged hex portion, so shouldered as you call them.
In order to use that type of stud you need to cut down the stud bosses by about .250”. You will also need to install 7/16-14 Helicoil inserts in the stud bosses.

There’s a few pictures of the machine work done on my 1964 421 HO heads to convert them to screw-in studs in this post:

https://forums.maxperformanceinc.com...7&postcount=78

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1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/3.08
2002 WS6 Convertible LS1/4L60E/3.23
1966 VW Type 2 Single Cab Pickup 140hp 2276
1956 VW Type 2 Panel Van 36hp 1200
1957 VW Type 1 Beetle 180hp 2276