1racerdude

Maybe not with the small DIA retainer and non self align rockers.
If ya use the self aligners(not recommended with big cam) ya still may have to find some lash caps.
The self align have a habit of jumping off the valve at RPM.
Do a board search it is well documented.

WS6T3RROR

You have to run .050 locks with stock valves to get enough room with beehives to shim and get a proper installed height without killing the max lift capabilities of the spring. Also the locks he has do not have a recess for the lash caps to fit into, the best solution here is for him imo is to run nsa rockers although it is not the cheapest.

I also dont like lash caps at all, i had a rocker snap on a drag engine and the lash cap got loose and wedged itself between the timing chain and gear of all places, broke the chain and bent every valve in the motor and got some of the connecting rods in contact with the cam lobes too. If it wasnt there all we woulda had to fix was a buy a new rocker.

1racerdude

You can get caps that don't need the groove.
Looks like ya had a rocker problem and not a cap problem IMO.

WS6T3RROR

Thanks for the tip i was confused by it laying there in two pieces. All i was saying is the lash cap made a simple problem alot worse. I seem to remember alot more cases than the one i mentioned where lash caps did things that werent too fun also like say a few ls7's with cams. I wont use them unless its an absolute have to situation, and this aint one of em.

1racerdude

Totally up to you as what to use. I have found them to get ya where ya need to be with no problems.

Projectz28

I have seen this before... If you notice it will be a problem on all you intake valves. They are just a bit shorter than the exhaust valves. In order to get the behived installed colser to their correct lenghts the you have to use the parts you used.

I ran into this on a friends car last year. We swapped the rockers to some 7/16" NSA ProMags and guide plates... no problem since.

BTW, stock PR lenght is 7.200. I will recommend that you buy the rockers and paltes first, install and measure for correct PR length with a checker and then buy the push rods at the correct length. Use a pushrod length checker with jam nuts and you can use it without swapping to checking springs. You will also need a way to accurately measure the checker when you are done. Like a set of 8" calipers...

The Engineer

I measured the valve stem tips with dial calipers on some stock LT1 heads (factory self aligning configuration) in my shop. The tips are .165" from the locks. So, you may want to measure yours to see if the issue is the valve stems and/or locks.

WD

mdenz3

Get a pushrod legnth checker (about $10) and a couple light springs and check the pushrod legnth before buying them.