what the best jets for my holley 750 dp, i just a 350, with performer intake and cam.

 

Until you have proof-positive that you need to change jetting stay with stock calibration. If it's a new carb- dont' touch it. If it's a used one with an unknown history then it's worth taking off the fuel bowls and making sure the jetting is stock for that carb. You can get specs on all Holley carbs off their website, including stock factory jetting.

You may be running a little fat (typical of universal replacement performance-oriented Holley carbs) but not so much as to cause any noticable "seat of the pants" problems or noticable performance loss.

Carb tunign is the LAST thing to do after you make sure everyting else is correct.

 

That being said and good advice, #70primary and #80 secondary
jetting seems to work well in these carbs most of the time.
For street/strip and at near sea level. If you're at a real high altitude you may want to lean it out a bit.
This is stock jetting in some models of 750 DP'ers.