1970 Lt1 carb. settings

[70 Forest Green Zee]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: al8apex</div><div class="ubbcode-body">OEM stock were 72 primary and 76 secondary, they were way to rich for the 1100 feet elevation here in Phoenix ...

the above may work ok for a drag car but will be &quot;phat&quot; for the street

again, IMHO, YMMV, etc </div></div>

Jim...according to Eric the stock jet size is 70 primary and 76 secondary...power valve is 6.5. I have the 4489 carb for NA9 Calf emissions and I don't know if they used different jet sizes than a non NA9 carb. A friend of mine has a 69Z and his non NA9 carb is also jetted 70 and 76 with 6.5 power valves.