I want to build what I call an "RE", a 2.7 motor for my '72 E coupe using a later 7R case, the new Mahle P&C's, my E cams and my MFI (rebuilt for the 2.7 specs). I want to keep the E grind vs. going to the S to keep some semblance of "E" and because I like the power curve. This will be a street car that will look very stock but perhaps surprise some folks.

I have been told that the cylinder pressures created by the 9.5 +/- CR of the new Mahles may be too great with my stock E cam and heads. Is this true?

If so, can anything be done besides going to a more aggressive cam that will also work with my MFI and lower the cylinder pressures?

I know that I could use the older 8.5:1 P&C's but would like to eke all the power I can out of the higher CR, now that they're available.

My builder is very experienced with older 911's and has built some bullet-proof RS motors. I trust him but would just like to hear some other opinions.