URGENT - Need valve spring specs

[Rat Patrol]

To be exact - I need the ID of the big end of the factory 6.1 spring.

Im researching different valve spring options that will just " drop in"

I know the PSI 1511 will, but Ive come across a PAC with similar specs but need to know the ID at the big end of a factory 6.1 spring or the PSI (good luck with that one)

Anyone got one to measure or have the details?

BTW - its NOT in the factory manual.:banghead:

 

[72BBSwinger]

.81 id
1.25 od

 

[Rat Patrol]

**** mate..thx for that - I've ransacked the web and couldn't find that ID anywhere!

 

[Modern Muscle]

I would go with the PSI Pacs have had a lot of issues