My 'Guess' is that BMW tunes for peak numbers & in the current format - the LL8 is set up for 'Truck Torque' numbers - . I like the LL8 'Crank Bearing Ladder' that boxes in all the crank bearings - doing it well enough that GM can run Twin Turbos on 8.5 pistons & pull 400HP with the same camshaft etc . and feel confident enough to look toward mass production at these output figures. Lots of Potential in a lite car - Brien. NEW YORK From: "mail@xxxxxxxxxxxx" <List@xxxxxxxxxxxx> To: "hh7x@xxxxxxxxxxx" <hh7x@xxxxxxxxxxx> Subject: mail Digest for 7 Oct 2004 in hour 20:00 Date sent: Thu, 7 Oct 2004 20:00:06 -0700 Send reply to: mail-From-<# print(JADDR); #>@amc-list.com From: david crooks <david.crooks@xxxxxxxxxxxx> To: amc <mail@xxxxxxxxxxxx> Subject: R Inline Six Engine : State of The Art > Looking for the Latest in I-6 Engine > Design, I came upon the GM 4200 > 4.2 Litre Inline Six - all aluminum > Twin Cam EFi butt Kicker 270HP > nastie . I'm not sure how the GM 4200 counts as anything special... The BMW 3.8 Litre Inline Six cranks 340 pony's in US spec and close to 380 in Euro trim...... Of course BMW haven't managed to cure their warping/cracking head design even given the 30 odd years they've been working on it! As allway's YMMV! Dave