Looking for a blank canvas for your next track car? How about this E28-chassis BMW 5 Series roller?
The seller notes this car comes fitted with a roll cage as well as upgraded suspension and brakes–all you’ll need to add is a new engine, transmission and fuel cell.
So, what’…
Maserati Bi-turbo
A rotary ... i mean ... a Wankel - that keeps it German, right?
There's an s54 for sale on marketplace near me...
But honestly I think whoever buys this should look to the most recent winner of the $2000 challenge for drivetrain inspiration!
What it normally has - a natutally-aspirated straight six.
That's right, I'm talking about the Atlas 4200! All aluminum with torque for days.
Dootz said:What it normally has - a natutally-aspirated straight six.
That's right, I'm talking about the Atlas 4200! All aluminum with torque for days.
I was gonna go with something a bit earlier...
Needs an OM606
The classic choice would be an S38 out of an e28 M5, or even better the updated S38 out of an e34 M5. A newer and probably better choice would be an S54 out of an e46 M3, I know a couple guys who have done that. A GM LS engine has been done multiple times, but it will require some modifications to the brake master cylinder booster mounting to make a V8 fit. The original M30 big six that came in these cars originally responds well to turbocharging - there used to be a company called Turbocharging Dynamics or TCD that made a nice kit for this but they are out of production, so you're best off these days building your own exhaust manifold, intercooler and piping.
stuart in mn said:The classic choice would be an S38 out of an e28 M5, or even better the updated S38 out of an e34 M5. A newer and probably better choice would be an S54 out of an e46 M3, I know a couple guys who have done that.
It's hard to go wrong with an S54, it's a wonderful engine. If budget wasn't a concern, I'd go with an S65 over an LS though.
Practically -- M50 or S52 with 3.23 lsd.
Ambitiously -- N55
I'm tired of LS swaps and K swaps. How about a WW1 era Liberty V-12? 
Let's do a Cummins 2.8, cuz these were better with deezels. Call it an endurance racer.
codrus (Forum Supporter) said:stuart in mn said:The classic choice would be an S38 out of an e28 M5, or even better the updated S38 out of an e34 M5. A newer and probably better choice would be an S54 out of an e46 M3, I know a couple guys who have done that.
It's hard to go wrong with an S54, it's a wonderful engine. If budget wasn't a concern, I'd go with an S65 over an LS though.
If budget isn't a concern, S85 with equal-length headers for that classic F1 howl.
Msterbee said:I'm tired of LS swaps and K swaps. How about a WW1 era Liberty V-12?
Umm, this is a German car, no? Wouldn't a Messershmitt engine be more appropriate. Keeping it "all German", right? 
This one, however, needs more work than the entire car...
S54. Done. Turbocharge if needed
DavyZ said:Msterbee said:I'm tired of LS swaps and K swaps. How about a WW1 era Liberty V-12?
Umm, this is a German car, no? Wouldn't a Messershmitt engine be more appropriate. Keeping it "all German", right?
This one, however, needs more work than the entire car...
Messerschmitt planes didn't use Messerschmitt engines. The BF-109 used a Daimler Benz DB-605 for instance. How about this BMW V1 V-12? Might as well keep it in the family. I'm not sure they would be too happy if we borrowed it from the museum...
In reply to ProDarwin :
Good luck fitting that into an e28. It would take two of their engine compartments.
5.7 Hemi. Because a guy has one and owes me money.
S85B50 Plus the factory 6 speed.
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