Stim
NE Florida
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Joined: 05/23/2007
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Left side of the engine has an exhaust doughnut between the manifold and exhaust pipe. You might want to check it too.
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rvrepairnut
bc
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Joined: 11/11/2011
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pusherpilot wrote:I had a Camaro back in 69 with a 454 that used to break valve springs on a regular basis due to over revving. The symptom was a loud ticking. There was little danger of burning valves in the short run because the valves had double springs.
Ron
A 1969 camaro never ever came with a 454.they never even made 454 in 1969
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Mike Hohnstein
Germantown, Wi
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Joined: 01/04/2004
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Sully2 wrote:rvrepairnut wrote:slemnah wrote:Ditto on the fuel pump push rod. I would also check the lifter adjustment as I have also seen the rocker arm studs pull out of the head (if they are the press fit variety)
were not talking about a fuel pump push rod.We are talking about the fuel pump arm.when the spring breaks its sound just like bad lifter
also you aint never seen a 454 stud pull out of the head as they were "ALL" screw in studs
I wouldnt bet my 401K on that "fact". I dont know for positive...but Ive seen a LOT of 396 and 427-400 HP engines that had pressed in rocker arm studs
Good thing, because you would lose your money. ALL big blocks feature screw in studs. It should be noted, any suggestion to replace lifters on a used camshaft should be ignored. That would be VERY bad thing to do. If engine needs a cam, the rest of it's probably weak, it would be wise to install a long block due to the hassle of working in a A chassis. As long as your in there, ya know??
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pusherpilot
Wherever we are.
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Joined: 03/13/2006
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rvrepairnut wrote:pusherpilot wrote:I had a Camaro back in 69 with a 454 that used to break valve springs on a regular basis due to over revving. The symptom was a loud ticking. There was little danger of burning valves in the short run because the valves had double springs.
Ron
A 1969 camaro never ever came with a 454.they never even made 454 in 1969
Yup, you're absolutely right!! It was a 1968 427. And before you tell me there were no 427s in Camaros check for the Dick Harrell specials built in KC. Horrible axle wrap that defied control unless you put air bags under it. Ate 396s fer lunch.
Ron
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punomatic
Pacific Northwest
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Joined: 08/28/2006
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Thanks to all for the input. I think I will try the Sea Foam treatment and hope for the best. In the meantime, I will do some "diagnostics" of my own and see if I can isolate the sound for myself. I am open to additional comments, however.
DW me,Pogo(the neurotic terrier)and Lulu (the Moxie with moxie!)
1988 Hawkins Motor Coach 301Q
2008 Nissan Versa Toad
I used to work for the department of redundancy department, formerly.
Travels With Sadie
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punomatic
Pacific Northwest
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Oops! Hit the button twice.
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rvrepairnut
bc
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punomatic wrote:Thanks to all for the input. I think I will try the Sea Foam treatment and hope for the best. In the meantime, I will do some "diagnostics" of my own and see if I can isolate the sound for myself. I am open to additional comments, however.
rislone is best if its just gummed up lifters
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punomatic
Pacific Northwest
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Well, I finally gave up on unsticking the lifters and took the MH to our mechanic. He went over the engine with a fine tooth comb, including removing the lifters and testing them. He could find nothing wrong with the valve train, so we pulled the engine and sent it to a machine shop. They disassembled the engine and found a broken piston that had been doing damage to the cylinder. Sooooo...we're rebuilding the engine. Gonna miss camping on the Labor Day weekend, but I won't miss that racket in the engine. Glad to have the mystery solved.
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Gale Hawkins
Murray, KY
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Joined: 07/22/2007
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Sorry you had to go so deep but at least you know the issue and are working to solve the issue.
How did you come out with the engine?
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down home
south
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Joined: 06/01/2008
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Engine that old probably needs a rebuild which might involve sleeving and boring the lifter bores etc.
The EPA stopped most oil from having zinc and other additives.
Cams and lifters and all sliding surfaces including pistons suffer rom it.
A lot of gas engines are now using Delo and Delo 400 oil as it has a lot of zinc in it.
I don't reccomend mineral oil anywhere near an engine. Trans fluid for a flush.
A good rebuild to spec might cost 3,000.00 and can easily go far beyond.
A crate motor with roller hydraulics maybe even a little larger say the 510 crate motor might cost you about 4,000.00. I'm not up on prices though.
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