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PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > Bad Decision on converting pressed to screw in rocker arm studs
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Old 04-13-2020, 08:03 AM
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Half-Inch Stud Half-Inch Stud is offline
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Must have the HEX Stud for Getting & Holding TQ to Factory TQ Spec.

HEX !

Please heed the need for the proper Rocker Studs. Can some PY member send him a used set for free?

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Old 04-13-2020, 09:38 AM
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If you bend/adjust the guide to line up the contact make sure it isn’t sliding the rocker on the valve as it is opened. That was probably why the poly’s worked loose. Adjusting the guide could still have issues there, it will be over compensating to get the geometry lined back up.

Probably need to helicoil that bad one to straighten it. No good way to patch that.

Last edited by Jay S; 04-13-2020 at 09:47 AM. Reason: Edit
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Old 04-13-2020, 11:04 AM
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Please heed the need for the proper Rocker Studs. Can some PY member send him a used set for free?
+2
How are the studs in the pics posted being retained? The correct rocker studs will have a hex to tighten the stud and clamp down on the guide plate.

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Old 04-13-2020, 12:04 PM
sdbob sdbob is offline
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Some of the old early 60s replacement,threaded studs I have seen do not have a hex. You just tighten them ,channel locks,vise grips etc

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Old 04-13-2020, 12:26 PM
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+2
How are the studs in the pics posted being retained? The correct rocker studs will have a hex to tighten the stud and clamp down on the guide plate.
I bought these studs years ago on Ebay from these people.

https://www.ebay.com/itm/Pontiac-GTO...UAAOxy7MtRuncH

They are tapped 1/2-13 in the stud bosses. I used two 7/16 lug nuts and jam nutted them together before tightening then down.

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Old 04-13-2020, 01:21 PM
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I bought these studs years ago on Ebay from these people.

https://www.ebay.com/itm/Pontiac-GTO...UAAOxy7MtRuncH

They are tapped 1/2-13 in the stud bosses. I used two 7/16 lug nuts and jam nutted them together before tightening then down.
Okay, well then I feel better about the whole deal. 45foot-Lbs with jambnuts sounds do-able. You feel better too right?

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Old 04-13-2020, 01:22 PM
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I bought these studs years ago on Ebay from these people.

https://www.ebay.com/itm/Pontiac-GTO...UAAOxy7MtRuncH

They are tapped 1/2-13 in the stud bosses. I used two 7/16 lug nuts and jam nutted them together before tightening then down.
Okay, well then I feel better about the whole deal. 45foot-Lbs with jambnuts sounds do-able. You feel better too right?


I just wonder what set of forces is prividing the 45ft-Lbs?

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Old 04-13-2020, 01:41 PM
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Okay, well then I feel better about the whole deal. 45foot-Lbs with jambnuts sounds do-able. You feel better too right?


I just wonder what set of forces is prividing the 45ft-Lbs?
I went German Torque Specs (Goot-N-Tight) with a 18" breaker bar so they are probably closer to 60 ft-lbs.

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1978 T/A 463 Pontiac, KRE 74cc 300CFM D-ports, Howard's custom SFT, Nash Intake,QFT 950 E85 carb, TCI TH-350, 4200 converter 3.73 12 bolt [email protected]
1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car.
1972 LeMans 350 Pontiac H/S Drags project
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