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Absolutely correct. The 4.0 ohv (my second favorite rbv engine to beat up on) can very easily be built into a low and slow torque monster; think of them as a V6 version of a 390 - low rpm lover that's torquey AF in low revs, with minimal upper rpm power.I can't remember anyone finishing a stroked 2.9. As PJ alluded to, it's kind of changing what the 2.9's good at. If a low RPM big displacement 2.9 is what you're after, you could get the factory version by going to a junkyard.
Pretty sure the Aston V12's are Duratec based.Colognes are WEIRD engines btw. There's a lot of of different ones in the family, initially V4 and V6, and thanks to Aston Martin, now V8 and V12 variants. Displacements options ranging from 1.8 to 4.0 for V6 alone. The 2.6, 2.8, 2.8i, 2.9, and 4.0 OHV versions sharing much in common, and the 4.0 SOHC and 2.9 DOHC as the weirdo versions.
Lots of options out there, and with so many block and head choices, you can basically build whatever you want out of them.
Now if I could only track down an Aston 6.0 cologne...
Well, DCinDC proved that the stock guts are strong enough to run 17psi without issue.I'm glad it's not worthwhile. I really didnt want to spend 4k on his kit. I guess I'm back to looking for a reman block to put forged parts in.