850 double pump issues HELP!!

ok....if ya have blocked pv's you should be 8-10 jets larger pri/sec.

another thing is if it's coughin on ya, you need more pump shot by means of either a lager# shooter and/or more pump cam and sometime the 50cc.. like you have.

What rpm does the convertor stall at?

If 3000+stall you might wanna start with # 37 shooter and go up from there.
I tell though..on a 360, that 850 is gonna a lot of shot to smoothly transition to the mains without pop'n out the top.


on the elevation deal....just figure the 8-10 deal and then for every 1k in elevation , just go down 1-2 jets. So start 4 jets leaner than the 8-10 richer that you would need to go when plugging the pV's