Dave1647545494 Posted May 19, 2003 Report Share Posted May 19, 2003 I'm using my nitrous plate as a carb spacer right now but scince its on the car I'm thinking of letting it taste some juice. I've got an 850q-jet on a 430buick with a 120gph holley fuel pump is this pump big enough to support both? and what do you set the fuel pressure at for the nitrous side? its set at about 8psi with a return line for the carb I'm sure it takes a seperate regulator for the nitrous side. also how much timing retard do you run is it like so many deegres per hp? any help welcomed thanks Quote Link to comment Share on other sites More sharing options...
COLD AIR Posted May 19, 2003 Report Share Posted May 19, 2003 What hp kit,what jets do you have,# of holes in plate line. If its a small kit you may not need to do any thing. Quote Link to comment Share on other sites More sharing options...
Tinman Posted May 19, 2003 Report Share Posted May 19, 2003 8psi=black smoke. Usually with N.O.S.'s jetting guidelines 4.5psi is optimal on a low pressure system. I've got an extra regulator if you want to run one for the plate and one for the carb. As for 120gph that should be enough for a 150 shot, maybe more if you've got the clankers Timing - 2 degrees for every 50hp of spray, but a little more will probally help a car as massive as your Buick. I'd go -8 degrees with a 150 shot Quote Link to comment Share on other sites More sharing options...
Guest 10secondMouse Posted May 19, 2003 Report Share Posted May 19, 2003 Tinman pretty much summed it up, the only thing I would do different would be to close the plug gap a few thousandths, go about 6-7 psi to the carb and no more than 5 psi to the fuel solenoid. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 19, 2003 Author Report Share Posted May 19, 2003 thanx its kind of a cobbled togehter kit I have a powershot plate (no jets yet) nx solenoids and lines I don't want to run a whole lot its got stocker bottom end in it so its prolly cast pistons can they take a 150 shot and live? Quote Link to comment Share on other sites More sharing options...
Lustalbert Posted May 20, 2003 Report Share Posted May 20, 2003 on a 430 inch motor, you should have no problem with a 150 shot on stock internals. about 200 i would get a little nervous about my ring lands going Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 20, 2003 Author Report Share Posted May 20, 2003 cool desktop dyno shows a pretty impressive gain with a 150shot from 3000-6500 with my particular cam Quote Link to comment Share on other sites More sharing options...
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