When you check out John's website, you'll notice that he wants additional info before suggesting a final overlap.
1.26 mm 964 profile would be for a 3.6 liter but he may suggest something slightly different when using a 964-grind for a 3.0 with CIS.
Also, he lists the overlap for SC's as 1.4 - 1.7 mm but the earlier '78-'79 (930/04) have an overlap of 0.9 - 1.1 mm.
I am sure he knows this.
Read his info about refurbishing rockers; good stuff!
Send him all required info and then go with his recommendation re: overlap and let us know what he says.
One more thing:
Do not feed new chains onto old chain sprockets (The ones on the I-shaft)
Go here:
New chains without new sprockets? Read this!
Either use new chain sprockets with new chains or re-use the old ones together.
Have fun.
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1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD!
1995 seafoam-green 993 C2, LSD, Sport seats.
Abstract Darwin Ipso Facto: "Life is evolutionary random and has no meaning as evidenced by 7 Billion paranoid talking monkeys with super-inflated egos and matching vanity worshipping illusionary Gods and Saviors ".
