Small Job, Big PITA - Chevelle Tech
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post #1 of 7 (permalink) Old Apr 26th, 17, 10:24 PM Thread Starter
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Small Job, Big PITA

Ok, so my 66 has broken two rocker arms over the last 5 years or so. I think they were the originals from the 74 ish motor that came to me in the car. So I put two new ones on and its been fine for a year or more. I thought I should put all new ones on, so last night I changed the drivers side. Used the rocker arm adjusting nuts that have been just fine for 10 years... Been off and on twice by me, felt ok.

One of the studs unscrewed. Find two nuts, double nut it and take the rocker off, double nut the top, put blue Loctite on and put it back in.

Drove to work today, three miles. After two, I have loose rocker noise. Looked at it tonite and a rocker nut was almost off. Put a new one on. Changed the pass side. Drove 15 miles and another nut came loose but was able to limp home running kinda rough.

Just changed it and shes fine again. All this after very carefully installing my first set of poly locks on my hot rod last month and worrying a lot about them!

So tomorrow night I will put all of the new nuts on!

Love this stuff. And I sure love my short cuts!

66 Malibu Coupe, home rebuilt 350. Took me 39 years to get her!
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post #2 of 7 (permalink) Old Apr 26th, 17, 10:40 PM
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Re: Small Job, Big PITA

time for rollers and polylocks.

1971 Chevelle SS454 4 speed, 3.31 Posi

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post #3 of 7 (permalink) Old Apr 26th, 17, 10:50 PM
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Re: Small Job, Big PITA

time for all new rockers and nuts, I think they come as a set!

Leo Paugh
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progress has little to do with speed, but lots to do with direction
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post #4 of 7 (permalink) Old Apr 27th, 17, 12:11 AM
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Re: Small Job, Big PITA

I hear ya. You think, no sweat this will be a cake walk and bam; turns into a fiasco! Sometimes that's the way it goes.

One of the best things I ever did was buy ARP poly locks and their flat topped screw in rocker studs (I run Harland Sharp roller rockers). In 17 years, I've adjusted them just for a "to be sure" feeling, but they've never come loose. It's freakishly reliable!
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post #5 of 7 (permalink) Old Apr 27th, 17, 10:45 AM
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Re: Small Job, Big PITA

Its funny you mention this as a friend just rebuilt a 327 and reused all the stock crip style nuts to have the very same thing happen.

Your just jealous because you can't hear the voices!

1967 Olds Cutlass 468 BBC/T400
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post #6 of 7 (permalink) Old Apr 27th, 17, 12:03 PM
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Re: Small Job, Big PITA

I know this won't be well received. But whenever I've had one loosen up I take it off and smack it with a hammer. When you look at the threads of a new one its slightly oval. I guess that's their locking mechanism. It's always worked for me that way. Sorry, I'm very frugal. Nice fancy word for "cheap".


65 Chevelle SS Convertible 350 4 speed Muncie...hopefully complete in another year or so
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post #7 of 7 (permalink) Old Apr 27th, 17, 6:00 PM
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Re: Small Job, Big PITA

I put a new set of the lock nuts on my 454 the second time I had it apart. Who knows how many times they had been used over previously. They felt loose to me and were only a couple bucks.


66 Chevelle crew cab 454 FiTech /TKO 600 5 speed
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