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If I remember right, the oil pan on the V8 in the 840 is a front sump to clear the steering. There's alot of room in that engine bay for the engine to move around some but the crossmember and steering linkage are going to be a hurdle.
'03 DSG Lightning *sold*
'05 GMC Sierra WT 4.8L *sold*
'05 Triumph Daytona 955i Blackout Edition *sold*
'06 GMC Sierra Crewcab 5.3L *sold*
'06 Honda RC51 *sold*
'87 Fiero GT with built 347 LS1- in progress! *sold*
'06 Pontiac GTO *Not sold*
I havent personally heard of or seen an 840 swap , but i do know theres a member here with three BMW swaps done and after a search i found several more. Good luck, keep searching, something will turn up.
__________________ (2) 79 Caprice coupes 468,700r4, 410's. 283, 350th,410's. G3&^ powered soon
(2) 79 Caddy coupes 5.3, 400 swap;collecting parts
80 El camino, 5.3, 2004r; collecting parts
79 Grand Prix coupe, roller, Lq9, L92's, 60e, nitrous: collecting parts
If you're wondering who makes mounts and kits I beleive the answer is....nobody, it'd be a custom job. pretty much any custom shop/fabricator can do it all it takes is money. personally I think I'd go lq9 or ls2 before I'd go with an f-body ls1...the BMW 8 series is crazy heavy (2 tons) and going to take alot of motor to make it a worthwhile swap IMO. that being said, I fully understand why you want to do the swap, I even researched a swap for an 840 before I began my current project but seeing as I have shallow pockets and little free time I figured it was over my head I gave up on the idea. good luck hopefully I'm wrong and there is someone out there that can help.
Couldn't see why it would be any more difficult than any other swap. Same issues to deal w/; clearance. Considering all, it shouldn't be much of an issue considering there's already a DOHC V8 in there.
__________________ 2004 LS1/T-56 (GTO) in 1989 2WD Toyota base pickup, now w/ more ford 8.8" 3.73 LSD.