HardcoreRM125

Is the stock valve stem on an LT1 a single groove design? The locks I THINK I should be getting ate 10* Valve Locks with single groove design, w/o recessed area for lash caps. Made to fit an 11/32" Stem Size. The part number is 613-16 If someone can check it on Jegs for me, and then the Retainers I am going to buy are these I think, The Valve Spring Retainer for universal Bee Hives that are 1.445". PN 795-16

MachinistOne

You need 7 deg locks.

#774-16 retainers
#648-16 locks

HardcoreRM125

Why couldn't I use 10* locks and retainers?

MachinistOne

First off, you don't need them, and second for the retainers you were looking at a 7 deg lock was required.

truedualws6

Here we go again for the 1000'th time.

The retainers, locks and shims will depend on what you want to do. If you
use the stock spring seats then the 7* hardware will work. If you want to
use the Comp spring seats then the 10* hardware with +.050" locks works
the best. This is assuming that you have stock heads.

If you want to go with 7 degree hardwarde:

787-16 retainers
648-16 locks
stock or LT4 spring seats

If you want to go with 10 degree hardware (super locks):

795-16 steel retainers, or
794-16 titanium retainers
611-16 locks (standard), or
614-16 locks (+.050)
4705-16 spring seats

Using the 7 degree hardware and stock spring seats you
should end up with an installed height close to 1.78". With
10 degree hardware, 4705-16 spring seats, and the +.050
super locks you should see a 1.75" installed height.

HardcoreRM125

MachinistOne, The retainers I had listed are 10*, and are 1.445"O.D. and 1.095"I.D. I'm pretty sure their what I need, But I think I am going to check into those ones that are +.050 that way I wont have to shim it up to get the right installed hieght.

Thanks, Joe

MachinistOne

Yeah - Truedual is correct, was thinking LS1 stuff. I gave you part numbers for a 5/16th stem.

Using the part numbers that he supplied above, I would use the 7 deg stuff simply for the installed height. 1.750" is going to be a lot of spring pressure, the 1.780" will be better.

Thanks Truedual for saving my ****...

HardcoreRM125

Hey, we all make mistakes. I cant count how many times you've said something more than valuable that helped me out.

I think I am going to go with the 10* +.050 locks, and 10* retainers, then get a .030 shim set to get me to a perfect installed hieght of 1.78" (Or at least thats what It should be if I am figuring things out right.)