Hey I was wondering what guys are running for jets in there 750 deamons and with what combo's? I have a fairly healthy 383 with afr 195's, hooker lt's, performer rpm air gap, xe294hr cam. I have been dropping jet sizes like mad and it still seems a bit fat, is something wrong with my carb? I now have 68 primary jets and 78 secondaries. 2.5 power valve. I think the thing came with 75 and 83's....... we are around 3000ft here so I know you would have to drop a few jet sizes or are these things just that outta whack? I had a holley 750 on my old vortech 383 and it used biger jets than this one. 69's primary and 80 secondary.

 

**** sakes, I could use some help here!!!!!

 

My 750 Speed Demon has the stock jets in it and seems to run a wee bit lean.

 

Well dude, I have a speed demon 750 cfm carb. From the factory it came with 78pri and 83sec. I called BG and asked what I should run and the said leave them and adjust it with the idle eaze screw. Now I'm no carb expert but no matter how much I fiddled with that godd@mn idle eaze crap it still made my eyes water it was so rich. So make a long story short. Called upon my carb enthusiast and he recommended jetting it like a holley. So at my altitude of 2700ft above sea level I run 69pri and 72sec. So it looks like you are on the right track. You might have more luck with the idle eaze than I did.