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Author Topic:   confused valve train
posted December 28, 2003 12:43 AM
350 started missing the other day and I noticed the valves where loose so I removed the valve covers and right away I seen my mistake and not sure how I did it but the rocker nuts where on upside down, so I flipped them over and adjusted valves and ran the car once everything seemed fine. I crunk the car the other day and was letting it warm up so I could load it up and I let it rum about 10 minutes or so at idle and shut it off while I loaded up some stuff. Jumped in the car to put on trailer and when I pulled out of the shop motor was making alittle strange noise like a mmiss or small knock it hard to desribe but it was more noticeable at idle and low rmps so I pulled back in the shop and the valve covers feel like the valves are loose again so maybe that is the sound I am hearing would that make that type noise. I had to go to work so I have not yet pulled valve cover but I can fell it in the valve covers chattering. Why are they loosing? Is it because they where upside down and then I flipped them over? Did that take the lockig out of them? I will check the studs to make sure they are not pulling out but How do I make sure the cam Did nit go flat or something. I am not sure why this happened so quick idling or maybe I just noticed it. If it matters It a 350 flat top motor with 70 cc heads and 410/410 howards cam and valvesprings they recomended don remeber spring pressure but I hope it aint no cam problem. Would just getting new rocker nuts and putting them on right solve the problem?

posted December 28, 2003 07:37 AM
if the cam is going flat, the oil will be extremely dirty. if the oil is still clean, i'd just replace all the adjusting nuts and check the studs.

posted December 28, 2003 08:29 AM
Definitely run the poly locks,you ruined the locking part of the stock style nuts.If you can't run poly's you can double nut the stock one's but it's a pain.

posted December 28, 2003 04:58 PM
The oil is great so I will get the poly locks and install them and check the studs while I am in there. I guess Im always worring about the worst and sometimes overlook the obvious. I am new to poly looks is this the same thing that crane calls cool nuts. Thanks all

posted December 28, 2003 06:19 PM
i had that happen when i tried locking nuts once. i had arp studs and i think they are alot harder than the locking when you thread them on you cut the locking part right out of the nut. polylocks are the way to go. the koolnuts by crane are nice.


posted December 28, 2003 06:53 PM
The Crane cool nut's are a type of poly lock. They are not what you want. You can get a set of Pioneer S-1010 for $25.00 and they will last you a lifetime.


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