Good point on the CR.

Ball park figures on boost VS CR on a 2.6.

Stock 8.7 to 1 should be able to handle about 5 to 7 psi of boost.

At 8.2 to 1 9 to 12 psi.

7.8 12 to 15 psi.

Stock on a turbo 2.6 was 7 to 1. That will get you past 15 psi provided the rest of the motor can handle it.

Higher boost levels need stronger parts and the oil jets to cool the pistons.

Kevin

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...