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Username Post: Parts ID        (Topic#360464)
PLS 
"8th Year" Silver Supporting Member
Posts: 1535
PLS
Loc: Smyrna, Georgia
Reg: 06-07-12
04-09-20 01:09 PM - Post#2790741    

While having to stick around the house and going out for necessities every now and then I have been taking care of a few things that have been put on the back burner. Over the past year my work bench had collected things that should not be on it so today while going thru the “stuff” I opened a small box and inside was 16 rocker arms and 4 other pieces. I have no clue where these came from or what they would fit. I was hesitant to post this because of all the heavy traffic here on the forum but was curious as to what they would be for before I throw them away. Lamar

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Rocker on right is from my 283


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These pieces have a "Y" plus a number




 


YOUNG57 
Frequent Contributor
Posts: 1207

Loc: Tennessee
Reg: 12-06-10
04-09-20 01:30 PM - Post#2790746    
    In response to PLS

The rocker arm on the right looks like a standard one for a SBC.

The rocker arm and pivot bar on the left look similar to those used in Oldsmobile engines. Those pivot bars had cylindrical bearing surfaces rather than ball ones like Chevys. The rocker arms were paired with the one next to it by the pivot bar and its cylindrical bearing surfaces does not allow them to turn side to side keeping them aligned with their push rods and valve stems.

They were adjusted differently from Chevys. You tightened the rocker arms and pivot bar down till the pivot bar bottomed out on its boss on the head. All lash was adjusted by the hydraulic lifter.




Edited by YOUNG57 on 04-09-20 01:36 PM. Reason for edit: No reason given.

 
PLS 
"8th Year" Silver Supporting Member
Posts: 1535
PLS
Loc: Smyrna, Georgia
Reg: 06-07-12
04-09-20 02:20 PM - Post#2790753    
    In response to YOUNG57

Yes the one on the right is one of the original ones from my 283 that is in my '60 Impala.
So this is the way they are paired? Thank you so now I can throw them away. Lamar

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DZAUTO 
Member #51
Posts: 8900

Loc: Mustang, OK, USA
Reg: 12-25-99
04-09-20 03:15 PM - Post#2790763    
    In response to PLS

Yep, two rocker arms and one saddle for paired valves.
I HATE 'um!
When I built the 455 for the Cutlass, I installed a conversion kit from Comp Cams that includes studs, guide plates, roller tip rocker arms and adjusting nuts that are of the same design as Chevrolet. This permits precise adjustment of the lifters just as it is done on Chevy engines.
I do not know why I didn't take a picture before installing the valve covers ---------------- just wasn't thinking!



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PLS 
"8th Year" Silver Supporting Member
Posts: 1535
PLS
Loc: Smyrna, Georgia
Reg: 06-07-12
04-09-20 04:22 PM - Post#2790766    
    In response to DZAUTO

Hey Tom that’s a good-looking engine! Is that an automatic growing on the back? Kidding, know that you just love autos. Oh, by the way I had mentioned that Shirley and I were going to take a road trip the last of May and would like to drop by and meet you but because to the situation with the virus we have of course cancelled that, maybe will try later in the year if everything shapes up a bit. I have just about worn this pea brain out trying to figure out how in the world I acquired these things and when. I noticed that the folding pieces of the box had a mailing label attached and looking closer it was something from Federal-Mogul in Atlanta to a machine shop near me dated Dec. 11, 1990. I looked the shop info up on line and it was started in 1987. I called them but they are temporarily closed. The only contact that I have ever had with them was a phone call last year concerning some info on my harmonic balancer, never used them though. Maybe sometime in the middle of the night it will come to me.



 
DZAUTO 
Member #51
Posts: 8900

Loc: Mustang, OK, USA
Reg: 12-25-99
04-09-20 05:56 PM - Post#2790771    
    In response to PLS

It's a Richmond 5sp. That thing is a monster. It's been in the Cutlass for over 30yrs and I have not had to touch it---------------EXCEPT to replace the clutch once.

I ordered the Cutlass new with a 5sp and I went through 3 of those factory 5spds. When I built the 455, I knew I would need something stronger and I chose the Richmond. NO regrets!



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PLS 
"8th Year" Silver Supporting Member
Posts: 1535
PLS
Loc: Smyrna, Georgia
Reg: 06-07-12
04-10-20 06:03 AM - Post#2790799    
    In response to DZAUTO

I would probably have gone through a few sets of tires to. 😱



 


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