I am building a 215 HP P-7100 pumped motor for a Ramcharger that will not tow. From my reading 17-18 degrees is recommended for the 215 pump.
I am shooting for a low smoke, and reliable 500 HP or so.

Does anyone here have any first hand experience?

 

Well I guess nobody here adjusts their timing on their 215HP motors....

I ended up setting my motor at 20.5 degrees up from the factory 13.5.
It ran great for 5 minutes on a test stand before I installed it in my Ramcharger build. It will be months before I get to test it out on the road.

 

Late to respond, but as long as you aren't on stock headbolts that will be fine. I was around 22 degrees with 5x12 injectors (vco) and it ran like a raped ape, was pretty hazy at idle. Went back to 16 degrees for cold weather and pulling weight. I think I have a balance problem with injectors and/or pump but runs pretty clean now, gained back some low end torque I lost with porting /cam.

What are you running for injectors/turbo?

 

There is a DTR name I recognize from when this place was a little more active.
Thanks for some info. on what worked for you.

I used some 5X12 VCO Ducky injectors.
The turbo is a Borg Warner S300 in a 62/68/12 size.
I used a set of ARP head bolts on a fresh Cummins HG and had the head milled down 12 thousands till it was clean and flat.
Also installed where 4 K gov springs, a #10 fuel plate, 191 DVs and I modified AFC for max travel and used a stiffer AFC spring from TST to help control things at higher boost #s.

I was surprised at how little it hazed at idle when I had it running in the shop on a test "stand". I figured it was going to smoke us right out of the shop.
Was a little worried about the bigger injectors.

This motor will have a 47RH auto behind it, in a 2wd pop top Ramcharger that is just being build as a fun SUMMER only driver.
I mention this as the recipe for building a motor for more of a tow pig style truck would obviously be different.

There is a more detailed build thread over in the 1st gen section...

 

Sounds like a blast! Should be a peppy ride once you get it dialed in right.
ps Haven't been on much since I got my 12 valve where I finally want it, been busy driving and getting finishing touches (besides body) done.