Thread: damaged push rods

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lack of oil or rocker is not in line with ball socket on rocker arm need to see the rocker arm were the tip and ball socket rides what size are the push rod whos guide plates are on the engine at full lift you need to check it is not hitting on the guide plate slot if so this will push push rod away out of rocker ball . i need to see push rod guide

will try to upload some other pics. Didn't think to take any pics or thoroughly inspect the guide plates. Was thinking Edelbrock makes so many of these...., but will definitely look closely at them tonight.

here's maybe a better close up.

pic of rocker, will look around tonight and look for any signs of the rods hitting anything. BTW, once i figure this out, I'm definitely looking for some advice as to what type and/or size cam to go back with? thanks, David

how about a pic of the rest of the rocker arm---the part that touches the valve tip and possibly the area where spring retainer is closest???looks like wear pattern around ball in rocker may be pushed away from valve-----------

I'll take more pics tonight and post them, thanks

I did double check the studs and none of them had backed out. All threaded in and tight. I'll take a closer look at everything tonight. Other than a little lifter noise on drivers side the engine ran and sounded good. Just glad I took some things apart and didn't just try and adjust the noise out..., otherwise i think some of those push rods were about to do some real damage...

For some reason I can only upload one pic at a time. But the guides look perfect. I'll add a pic of them, but the camera flash makes it look like they have wear and they don't. This pic will show the only unusual thing I saw and that was some stud side wear on only a couple of the studs.

Pic of bottom of rocker arm. Thinking that maybe the new springs on the heads were to much for the older parts? My rockers and push rods have 100,000 miles on them so maybe they just wore out? Thinking of going back with new stamped steel stock type rockers and stock length push rods (per edelbrock spec) now I just need to decide if I keep my new cam or or upgrade to a roller cam. Any advice would be greatly appreciated., thank you, David

bingo them rocker are hitting the studs and you can see in were the ball are you need rockers with more slot or make them bigger or buy rockers that will take the lift. your push rods are way off your not even close to were you should be on the from what i can see i need a better photo of rocker tip get all that fixed you will be ok

them arp rocker studs do not like the locking nuts so your better with the stock gm rocker studs or poly nuts your taken the thears off of the rocker studs . you looked to be way down on the stud . take a photo on the EX valve tip if you can

Summit sell some rockers they call nitro that have more lift. Cost like $175.00 think that'd do the trick? Will try an upload a pic of the rocker tip but didn't photo to good. I could also get roller rockers but I believe you said they weren't worth the extra money. Any ideas as to hat cam I should put in the engine ? Thanks Pat

Originally Posted by 402 gator

Summit sell some rockers they call nitro that have more lift. Cost like $175.00 think that'd do the trick? Will try an upload a pic of the rocker tip but didn't photo to good. I could also get roller rockers but I believe you said they weren't worth the extra money. Any ideas as to hat cam I should put in the engine ? Thanks Pat

not roller tip rockers . roller rockers ok just not cheap ones .what size is the cam

Originally Posted by pat mccarthy

them arp rocker studs do not like the locking nuts so your better with the stock gm rocker studs or poly nuts your taken the thears off of the rocker studs . you looked to be way down on the stud . take a photo on the EX valve tip if you can

My pic of the tip didn't come out clear, but I didn't see any off center wear or marks. The studs are what came with the heads, do you think new rockers with more reach would solve the problem? Sorry but I'm not familiar with the poly nuts your talking about. But if they'll fix it I'm great with it. David

are those 3/8 pushrods???? looks like the guide plates might be 7/16 ????????? I don't like those kind of pivot balls ---------

Edelbrock 2162. 218/228 @ .500. But heard some say that maybe I should go with roller cam? And what roller rockers do think are good?