Hi Guys, So here's the deal. I have a 2005 3V v10 complete (manifold to manifold), and the harnesses. I would like to eventually put this under the hood of a 85-01 Mustang or a 84-91 Lincoln Mark VII. Why? because I have it and it hasn't been done all that many times before. The plan calls for a TKO 6 speed, working cruise, ac, etc. Here's the big question: What is the max safe rpm/tq/hp that these offset crank engines will take reliably. Keep in mind I'm talking a 3-5,000 lb car here, not a 7,000 lb truck pulling a 9,000 lb trailer. I'd just hate to go through the work of creating a unique work of art and grenading the motor the 1st time it revs past 6500 rpm. Thanks in advance.

 

I wouldn't go over 5k if it was mine. It will pull sweet at 4500 all day.

 

Good question. With four-bolt main caps and crossbolting, resulting in a "6-bolt main" motor, the bearings certainly won't be walking much.

But in terms of real results, we just don't know. At least I don't

The problem would be the balancing shaft, and whether or not that can run up to 6500 RPMs and tame the inherent vibration in a 90-degree V10.

 

I built the v10 2v in my 2001 f250 sbcc a couple years ago, and to the best of my recollection, the balance shaft is chain driven off the cam at 1:1, thereby making it 1/2 of crank speed. The one thing I really didn't like about it is that it's a really long shaft supported by three flimsy looking bearings. Kind of making me wonder to myself how vipers, gallardos and r8's are set up with their v10's to accomodate the unreal rpm's that they spin. I'm realistic that I'm dealing with a truck motor so 8500 rpm probably isn't a reasonable goal, but if I could manage say, 550-650 hp and 550-650 ft/lb torque, with hp peak around 6000-6500 rpm, It would make for a spirited ride indeed. And compared to what even old small block fords are doing these days, that's tame.