Turo

iTrader: (23)

i run a TNT 100 wet shot right now on a stock fuel system. I will soon be adding a fms fm8 cam (224/232 .586/.594 114lsa) and swapping the jets for a 150 shot. what sort of fuel upgrades will i need? will swapping the in-tank fuel pump for a holley 255 lph be sufficient? if not, what else do i need to upgrade? thanks!

GM Muscle

iTrader: (9)

I run the Holley/Walbro pump with my TNT 150 shot (no cam though). It works great and holds at 58 psi during a run but, I do get a nasty lean spike for a split second when I first hit the nitrous. I was told that I should eliminate the intank regulator, put an aftermarket regulator at the rails and run a -6AN return line back to the tank. I imagine you would be fine with just the pump though, most TNT owners have said they see a lean spike and it doesn;t seem to be hurting any motors.

BTW: I am not running a voltage blaster or hot wire kit so I imagine both of those would help out big time.