WOW!!!!
Joe actually added some good information.

 

well some one has to two.

 

if only his speeling could be helped







*yes i know i said speeling but i felt it needed to be that way

 

the only way the speeling in Joes posts will ever be legible is if his girly-friend does the typing for him.

 

yup thats true!

 

Might want to check the lobes on the cam.

 

Check out the lobes by pulling it and measuring? Or just verifying that all the lifters move?

 

Still haven't gotten this thing up to par. It just keeps getting buried in the barn, but i am ready to tackle it again, I decided to pull the heads and put some non adjustable rocker arm heads on yesterday since i have been getting nowhere for years and this is what i found.....

First off, I don't know much about valve trains. I am by no means a engine builder. I have extensive mechanical experience but never ventured outside of stock bolt on and take offs.

Threw it in truck (460), fired it up, broke it in, sounded great. Drove it around the yard a bit and seems to have lots of power and no smoke, but shut her down and will never restart, i keep finding loose (not bent or damaged) pushrods. Put the pushrod back in and starts and runs great, i have done this about 5 times...... I spent hours researching and broke down and bought an adjustable pushrod to determine what I thought was correct length, like one size longer than what was already in there. But the problem keeps occuring! HOWEVER, this time i noticed odd wear on the intake valve keeper/retainers! Finally a clue!











So, I assume that the rocker arms are incorrect, but then again, I don't know much, so that's why I am writing this up and asking for help on this again. It appears that the rocker are is just rubbing all over the valve spring "retainer" and not just on the tip of valve like it should. Ok, thats fine and dandy, but how do i figure out what arms to replace them with? I am thinking roller rockers (again I don't really know anything about roller rockers but i have seen pictures in the catalogs). I feel like with a roller rocker the "arm" would be "above" the roller, thus up higher and less likely to come in contact with the valve keepers.

There are no marks on the exhaust valves and it appears there is more valve "stem" sticking out of the top of the spring so I assume that is why they do not hit. Also the rockers have different markings but do not look physically different.




Anybody have any guidance? Here is what I know about the engine

Block-unknown
Heads Dove-C
Cam, lifters, springs and i believe retainers- Comp Cams 4x4 Extreme

Like I said, when i reset all the push-rods, it starts and runs great, 1 time.

I would really like to figure out what this last piece of the puzzle is. Tonight i drug it back in the garage to remove the heads because I was so frustrated. I was going to replace the heads with another pair of D3VE-A2A heads I had laying around which do not have adjustable rockers just because I have seemed to be getting nowhere.






But when i was prepping the heads for removal I noticed the wear and the pattern that it was only intake valves, and that the intake valves didn't stick out as far from the spring as the exhaust valves did. Suddenly i figured I should ask for some help before going through all the work of switching heads if it may be as simple as bolting on some different rocker arms.

Please tell me someone has some insight! I'm desperate here
Thank you very much in advance!

 

Or do I just need longer pushrods on the intake valves only? Its been a couple years but maybe when i did the measuring I happened to only do a couple exhaust valves. I don't remember if I went through all 16 or not, I think i did but not 100%

 

I'm going to go out on a limb and say your problem is that you aren't using pushrod guides? Not sure if you have to use them, just seems to me like it would be good insurance to keep your pushrods in line.

 

i am not "up" on the 460, but it seems to me you have the wrong intake valves in those heads.
if i remember correctly, the valves should be the same distance out of the keepers to rocker contact point.

 

According to my local speed shop the rockers were wrong, they ordered me Comp Cams 1411-16 and I picked them up yesterday, pushrod guide plates as well. This stuff is going on this morning, hopefully this cures it! In my research I read a few times to be careful not to get Chevy rockers, the speed shop looked up rockers in their parts book for the 460 and 1411-16 was listed. When they arrived and I picked them up the box said BBC, i pointed that out to the speed shop and they assured me that they were correct, despite me telling them that I read to be very careful not to get chevy rockers. Well, hopefully they work!


http://www.summitracing.com/parts/CCA-1411-16

 

Subscribed.

Looks like fun!

Reminds me of the tugs used at the airports…

 

Just checked comp's online website, and it does list the 1411-16 for use on the 460. you should be good.