GARY C wrote: ↑Tue Apr 17, 2018 9:47 pm
Orr89rocz wrote: ↑Tue Apr 17, 2018 8:36 pm
randy331 wrote: ↑Tue Apr 17, 2018 8:32 pm
That's an expensive and not very good example of a good tow engine.
Randy
Its towed 14,000 lbs just fine and got 10.7 mpg doing so if i recall. I’d say that works pretty darn good
In the context of the thread I think it's a good example that 500ft lb 383's don't grow on trees even if it's a money tree.
They may not happen easily, but if I spent that much, I'd expect better results.
I think the OP is unlikely to get 500 lbs or even 475 within what he has posted. Non roller block would suggest hyd flat tappet, that won't help.
The vortec heads are good choice but in un ported form aren't gonna produce the tq he's wanting.
For a build like the OP is talking about, I wouldn't focus on full throttle power, but how to make good power over a wide rpm range, and mainly at part throttle. It will spend 99% of it's time at part throttle.
I've built a couple of those type of tow engines recently that I'm happy with.
Randy