BBC fuel starting point

Getting ready to test soon. 588 BBC convential heads 1471 hi helix delta, set back 2 inches, 12% over, 30* timing. I have an Enderle 110 pump 13.1 gal. I have nozzles up top and in ports. Here's what I 'm planning on starting out with.
Hat (4) 62's in front, (4) 58's in back with (2) 40's in back of blower.
Ports
#1 44
#2 42
#3 40
#4 40
#5 38
#6 38
#7 36
#8 36
80 pill in main with no hi speed. Looking to do some 1/2 track passes at first. Does this tune up sound safe to start with? Thanks

 

sound good it will be rich but thats good

 

Fuel System

I Agree With Don Sounds A Little Rich In The Hat But Should Run And Be Plenty Rich.

 

`James's set-up is near 72 % hat 28 % port , i often read on this site that 70/30 is the best fuel ratio , does this 2 % off is very important ? , is it better to have lower % on the hat (like 68 % ) than 72 % ?
Thanks
Claude

 

James, I run a chevy simular to yours with dart 330 heads. The car runs 6.30's all day. This site offers the best advice a guy can ask for. Its is a little rich but the suppercharger that you have will burn it on the big end. Once you make a few runs you will find a little more blower will be just fine. In Vegas on a hot day my tune is 100 main, 38% blower, 34 deg timeing for a
6.30 run. You also have to take in concideration final compression, clutch setting, Etc... Your tune will work but I recommend an enderly 990 fuel pump to be on the safe side. The 110 pump is more a high 6 sec pump all though some big guys have gone real fast with the 110.
Just a chevy guys 02 cents

 

What is the fomula to calculate the % in the Hat and the % in the bottom nozzles?
Thanks,

 

you have to calculate the area of all jets in the engine EX: .050 jet
.050 X .050 X .7854 = .0019635 (jet area) , then find the total for all the jets vs the total of port or hat only .
claude

 

This web site is great! Thank you Wildride Boy.
Joe