Carb tuning help
On adverage, i've found the PVRCs as tight as .025", but most were .031"/,033", on advarage, the emulsion holes are .031", but these shouldn't really be messed with unless your really fine tuneing, however, you could drill/tap them & install screw-ins, & even add more like found on aftermarket MBs, but really should be left to the pros, most of your emission holley have emulsion "tubes" under the cap, there the restrictor, slide them out, increase the PVRCs to .031"/,032", increase the IFRs about .003", some are on the top of the channel, doing this will normally make the MB moore perf. orientaded, install screw-in ABs. This is one i did, figured it would be one of a kind, its the 800dp Spread bore, installed screw-in ABs, should have went all the way & made it 4 corner idle too.
On adverage, i've found the PVRCs as tight as .025", but most were .031"/,033", on advarage, the emulsion holes are .031", but these shouldn't really be messed with unless your really fine tuneing, however, you could drill/tap them & install screw-ins, & even add more like found on aftermarket MBs, but really should be left to the pros, most of your emission holley have emulsion "tubes" under the cap, there the restrictor, slide them out, increase the PVRCs to .031"/,032", increase the IFRs about .003", some are on the top of the channel, doing this will normally make the MB moore perf. orientaded, install screw-in ABs. This is one i did, figured it would be one of a kind, its the 800dp Spread bore, installed screw-in ABs, should have went all the way & made it 4 corner idle too.
