Need a quick ballpark figure.

[69Rcode_Mach1]

Hey guys I have a holley strip kit, and I need to figure out what sort of jetting would put me in the area I need to be. I have 81p/89s right now but that is not from the factory, I changed them when I was testing some stuff. The problem is I stripped out a plug hole so am fixing that tomorrow, and hoping to get it on the freeway to finish the break in. So it has to be a decent tune can't be lean or super rich. Any kind of suggestions on what sort of jetting I should run. Idle I can figure out, but I don't want anymore fouled plugs. I am at 4200ft elevation which may affect your figures, but please guys I need this. Check my sig for the combo.

 

[thehueypilot]

I have a similar set up and I run 76 pri and 84 sec which give me 12:1 in the 1/8 mile as recorded by a wide band air/fuel meter. My elevation is only 400 ft but read your plugs and adjust accordingly.

 

[gsxrken]

IIRC, I run 72s and 82s in a 750 4150. And that's in a stroker 408.

 

[ttoney]

75p 80s @ 5280' Denver. The carb is the Holley street avenger 770 on the .30 over 351c.

 

[69Rcode_Mach1]

I will give 72p/80s a try and see where to go from there. Thanks guys.