Any progress on V8 engine swap options?

[truegearhead]

There seems to be endless Audi 4.2l options. Is there a year/model you want to stick too? Looking at the horsepower figures an 04 or later is good, an S8 is ideal and I guess the drive by wire or cable decision needs to be made. Am I missing anything? Has anyone attempted to proceduralize the 4.2 swap, even from a high level?

[1thenaton1]

Originally Posted by truegearhead

There seems to be endless Audi 4.2l options. Is there a year/model you want to stick too? .... Has anyone attempted to proceduralize the 4.2 swap, even from a high level?

You are best off looking at the C5 A6 and S6 variants of the 4.2. S6 has forged rods i believe and a better cam setup that makes more high rpm power. The D2 S8 version makes the most power from factory (same upgrades as S6), but uses a different mount setup, which can be swapped to the A6/S6 version relatively easily. The older ABZ works with a standalone ECU, but the stock ECU cannot be easily reprogrammed like the motronic ECU you get in the 2000-2004 cars. The 2004+ 4.2 engines are timing chain rather than timing belt, and require very expensive engine out service at around 100k miles, those would not be good engines for a swap for the most part.

Member AaronF who posted above has the best info I've seen for the swap, here:
https://sites.google.com/view/boxsterv8swap/home