3.0SC rebuild dilemma

[GBStu]

I’m about to rebuild my 79SC engine, my question is: “is it worth going with the 98mm P&C’s if I plan to keep the CIS?” Whether I go with re-ringed 95mm or 98mm my plan was to change the cam and update to SSI’s.

I do have a few other questions:

1) What would be the best cam profile to use with the CIS? (I don’t necessarily need low end torque)
2) Are there any upgrades to the CIS system I can perform?
3) Is it worth going with 95mm “high compression” pistons?

Thanks for your help

Cheers

Stu

PS: I don’t mind spending the money, but it has to be worthwhile!

[Porschekid962]

Yes plenty of info out there on the 3.0 cis and engine ideas. Just to let you know my dad's car has a 78 3.0, 20/21 cams, pop off valve, msd, SSI's with a two in two out muffler and is nice and strong. You can get the revs up there and it really pulls. A decent amount of low end grunt but nothing neck snapping. Right now we are debating whether or not to build it to a 3.4 or plop in a mostly stock 3.2