Originally Posted by DieselKrampus

um what? Not sure where you're getting that number from, but the US spec S50 and S52 made 241hp to the crank, stock. I had a '95 M3 with Schrick cams (can't remember the lift and duration off the top of my head) turner motorsports shorty headers, some mild headwork (port/polish, upgraded valves and springs) Porsche 930 MAF (3.5" vs the M3's 3"), Jim Conforti 3.5" CAI, super sprint midpipe and Scorpion CBE, making about 335-340crank, over 300 at the wheels. 5.0s were no problem, lol. It's an extremely potent motor and the S50 in particular had a pretty violent power hit up top when the cams came on. I never liked my '99 m3 (s52) that much because it felt like a dulled down, tamed version of the earlier design. In a lightweight chassis like the E30 that 330+HP would be more than enough IMO.

Again, not trying to detract anything from your build, just sharing my experiences and opinions. A big displacement, high-revving V6 in an E30 is quite frankly awesome and I bet it'll be an absolute monster to drive!

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