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Old February 23rd, 2010, 04:01 PM   #1
skife
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350 help please

buying a truck with a 350 in it, the rocker arm nuts we're tightened all the way and someone tried to start the truck that way, there are 2 bent pushrods that i know of, will i have bent valves too? or am i just going to have to replace the pushrods?
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Old February 23rd, 2010, 04:05 PM   #2
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it's possible that there are a few valves bent. easiest way i have found is to remove all the rocker arms on the affected head, and put a straight edge across the top of the valve stems on that side to see if there is any height difference between cylinders. if you find one that isn't touching the straight edge that valve is bent.
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Old February 24th, 2010, 09:06 AM   #3
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I guess I have to ask... why were the nuts tightened down all the way?
if it was just a dumb kid trying to adjust them or was it because it has bigger problems? and he didn't know any better? secondly does it still run?
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Old February 24th, 2010, 08:14 PM   #4
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I guess I have to ask... why were the nuts tightened down all the way?
if it was just a dumb kid trying to adjust them or was it because it has bigger problems? and he didn't know any better? secondly does it still run?
time to break out the background story of this truck.


a guy i know bought it and i guess he never drove it, it got warm and overheated or something (going by the guess of i found 2 thermostats inside the truck) and i was told someone found coolant in the oil, so my friend took the truck to one of his "licensed mechanic" friends and paid him to do the head gasket. he calls me a few weeks later and asks me if i know how to adjust the valvelash and set the timing. so i head down there and pull the driverside valve cover and go to set the motor on TDC, when i did that i noticed that we we're missing a pushrod or two. then i looked at the rocker nuts and the we're cranked all the way down. idiot "mechanic" put it back together wrong after he did the headgasket.


needless to say i picked it up from the "mechanic's" house and he was trying to tell us that the only thing wrong with the motor was that it had a couple of collapsed lifters and the timing needed to be set.

Last edited by skife; February 24th, 2010 at 08:25 PM.
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Old February 24th, 2010, 08:18 PM   #5
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the likely hood of bent valves is minimal but possible. do what kodiak said with the straight edge. Push rods are cheap so buy a new set regardless of how many are bent. Do you know how to properly adjust the rockers?
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Old February 24th, 2010, 08:29 PM   #6
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Do you know how to properly adjust the rockers?
yep, nothing to it, i used to own an 80 cutlass with a mild 350 chevy
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Old February 25th, 2010, 06:58 AM   #7
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well if your lucky the head will be torqued right also? I would check everything coming out of a deal like that. who knows how bad the engine could be it may have been sitting all this time with coolant in the cylinders and oil pan. good luck getting it running
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Old February 26th, 2010, 03:42 PM   #8
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well if your lucky the head will be torqued right also? I would check everything coming out of a deal like that. who knows how bad the engine could be it may have been sitting all this time with coolant in the cylinders and oil pan. good luck getting it running

i'm going to swap the pushrods and see if it'll fire, if not then i'll start troubleshooting the problems.

if the motor is junk no big deal, i've got access to another motor for dirt cheap.
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Old February 27th, 2010, 11:38 AM   #9
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well, started pulling pushrods, got a few out, then only 2/3rds of one came out.

intake is coming off

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Old February 27th, 2010, 06:37 PM   #10
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rest of them.
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Old February 27th, 2010, 06:39 PM   #11
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im sorry but
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Old April 15th, 2010, 04:31 PM   #12
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good god man somebody go take that guys tools away!!!!!!!
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Old April 15th, 2010, 05:51 PM   #13
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im sorry but
X a billion!!!

If he didn't know how to adjust rocker arms I would also pull the heads because you know he did not torque them right either!

Sense you are that far into the motor now is a good time to upgrade cam as well, judging by the looks of those push rods there is a good chance you might also have damaged lifters and maybe a cam lobe.
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Old April 15th, 2010, 06:00 PM   #14
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Fixed your pic.
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Old April 15th, 2010, 06:06 PM   #15
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rest of them.
that shit is kinda funny.

but you need to go to this licensed mechanic's house, and shove one of those push rods down his pee hole.
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Old April 15th, 2010, 06:07 PM   #16
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WOW. in all my years of basket case chevys I have never seen pushrods bent so bad. I would pull the heads and jerk the valves they all have to be bent. plus you may have piston damage or a cracked head. un freak'n believable
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Old April 15th, 2010, 07:21 PM   #17
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make sure you warn others about this so called "licensed mechanic" i wouldnt let him work on my bicycle
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Old April 15th, 2010, 07:41 PM   #18
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make sure you warn others about this so called "licensed mechanic" i wouldnt let him work on my bicycle
i wouldnt let him touch air much less a bicycle
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Old April 15th, 2010, 09:39 PM   #19
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Maybe he means he has a drivers "license" and knows a "Mechanic"
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Old April 16th, 2010, 01:04 AM   #20
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WOW. in all my years of basket case chevys I have never seen pushrods bent so bad. I would pull the heads and jerk the valves they all have to be bent. plus you may have piston damage or a cracked head. un freak'n believable

X2! Pull it apart and check everything! Thats some serious bending!
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