Retainers and seats size for 1209x
-ti retainers 1.27"
-seats 1.300ish"
-the 660 springs OD 1.300" (swapping those for the 1209x)
This is for a solid roller app. I can't find info on the retainers size PAC offers with them.
Is the 1209x too big for the 1.27" retainers? It seems small already for the 1.300" 660 ...
The 660 were installed on the heads when I bought em.
Heads are FED TFS262 (255) for LS3.
Valve locks are 7deg, stem 8mm and 0.680 ID size( for the 1209x and the 660 I have).
Last edited by Johnnystock; Jan 5, 2020 at 12:44 AM.
I would call PAC directly and make sure that the retainers you have will work for those springs and your application.
KW





