ok guys im going to be dropping in a completly rebuilt 350 early spring and swaping my tpi unit over. but my question is if i got a 125 hp nitrous kit for it do you think th engine would hold up to it? and for how long. also when running nitrous what is preferd wet or dry and why. and would decreasing the timing and adding more fuel make that much of a difference on the engine life?

sorry guys just want to get some info about running that high of a shot cuz i dont want to destroy my motor i just want some quick hp until i can get the cash for my paxton sn200 setup

 

125hp on your motor should be safe as long as its all done right. of coarse a wetshot is better. a dry shot works by bumping up fuel pressure. wetshot directly dumps extra fuel through the intake. and yes decreasing timing will help engine life. -preventing detonation. and more fuel.. just enough to stay in that 14.7:1 range. not too lean or rich.

 

You do not want to run nitrous, or any combo at WOT for that matter, at 14.7:1 AFR. I'de shoot more for 11.5-12.5 AFR with nitrous.

 

what would i have to do to get it in the 11.5-12.5 Air/fuel ratio?

 

Run it a little fat (rich) and be conservative w/ the timing and you will be fine. Just don't try and get every last hp out of it pushing the limits and I see no problems...

 

Probably not much, as the jetting supplied in the kit should be close, but you simply go up or down with the fuel jets to get the desired AFR.

 

From a practical standpoint using the dry plate system is far easier and cheaper to install than a wet system. I've watched my brother in law all last year fight to get his 500hp fogger system to work properly, the rest of our buddies use the standard plate system-bolt on and go racing.

Biggest issue is to make sure you have ample fuel (often times this requires a dedicated fuel pump just for the nitrous system) and taking timing out so not to pre ignite and burn holes in pistons (unless your running race gas, but it'd still be a wise idea to take 2* out for every 50hp i you add)

Expect to have double of what the actual kit tiself costs into the new nitrous set-up if done properly with all the safety items plus bottle heater for max effort outta the bottle. All these safety items will be the difference between a blown motor or a great running long life motor should somthing go hay wire at any time.