Rebuild a 2.7L or 3.0L six motor, which is cheaper? Options

[boxsterfan]

Which /6 motor is cheaper to rebuild? 2.7L or the 3.0L?

1. Assume core motor is in good condtion and no crazy findings when you tear it down.
2. Assume you are building the motor for longevity
3. You are putting this in a 914/6 conversion (was /4)

[Justinp71]

I'd also ask yourself what kind of motor do you want? A proper (right cams, timing, etc...) carbed motor is a different animal than fuel injected motor, imho.

I ran a webber carbed/cammed 3.0L for years (now rebuilt into a 3.2L), it was a blast of a motor. Good power/weight with the 914, sound was amazing too. Very reliable for me, seems like most sixes that don't have an old un-maintained CIS system are reliable. I drag raced a modern 6.0 GTO at laguna seca down the main straight and we were neck and neck.

Fuel injection would add mpg, smoothness and cleaner air. This is because the old IDA webber design requires a fuel mixture of around 12:1 at cruise to keep the idle circuits to operate smooth.