I can't seem to achive the recommended install height for the PAC1218s / Comp26918 which I was told was 1.75"-1.80" .
I have the correct retainers, locks and seats, being Comp 795 retainer, Comp 611 super locks, and Comp 4705 seats, but the closest install height I can get is 1.70" with that setup??

Cam I'm using will be .560" lift so I think I'm ok since I'm using the Nitrided PAC1518 springs but was told this combo of parts would set you up at a 1.75" install height with stock LT1 heads.

 

Is it the LS1 stuff?
Ya need .050 up retainers and keepers.

 

These are LS1 springs, but are the same ones all the LT1 are using now, the retainers, locks and seats all came as a set for LT1s.

What should the part# be for the .050 up retainers?

 

If they are Ls1 they should be .050 up.
Call Comp and see what is going on. They might have shipped you the wrong stuff.
Take Comps advice and double check everything,not some one from the boards advice.

 

I called Comp and the tech rep indicated that I should use the #614 locks as they are the +.050" Appearently the ones shipped were the 611's which are recessed for lash caps.
So I'll go back to the builder I bought the package from and see if he can confirm these will work or why I got the wrong ones.
Thanks

 

 

Valve spring "shims" will take you far.

 

I needed a taller height not shorter
I did find the issue though, the heads I was putting these on were stock LT1 heads with stock valves. I thought the heads I bought these for were also stock length LT1 valve stems but they were not, they were the 2.0/1.56 which have .06 taller stems so using the #611 locks on those would have worked or if they still needed some height due to the valve machining then go with the +.050 #614 locks. Just didn't know the bigger valves had a taller stem so it was my fault there.

 

lol's never mind... play with the locks... it took me a week to set my height.