They came to me with:

122 mains
180 airs
.2 emulsions
60 idles
and 35 pumps

It runs and idles, but it's stumbly in part throttle operation.

I realize the mains are too small. I found a lot of info on baseline arrangements for 40s, but very little on 36s.

I'm thinking about going up to 140 mains and 70 idles.

If you're running 36s, your input is requested.

Ran dual 36's a long time ago on a 2.0L.A great running car.We had 135 mains,175 air corrections,50 or 55 idles (Don't remember but I know they were smaller than 60's) Same emulsions and pumps.32 venturis-Hope this helps-J Jackson

34 vents

60 Idle

132 Main

180 Air

2000' above sea level

Thank you. It's pretty good that you remember all the numbers from "a long time ago".




Ran dual 36's a long time ago on a 2.0L.A great running car.We had 135 mains,175 air corrections,50 or 55 idles (Don't remember but I know they were smaller than 60's) Same emulsions and pumps.32 venturis-Hope this helps-J Jackson

1987 or 1988 we built that motor -I can't remember my ex wifes middle name but I sure do remember a good running combination in a teener.J Jackson

Mains are mostly dictated by the formula of 4x to 4.2x (for larger carbs) the venturi size. If you have a 30mm venturi you are pretty much spot on. I'd check for proper timing, carb synchronization, and proper settings of the idle volume screw.

What cam, exhaust, and distributor are you running? Timing (idle/total advance/max)? Valves spot on?

I was running 122's and 65's with 28mm vents. It stumbled off the line and lacked top end. Part of the problem turned out to be the 050 distributor. Changed to a properly set up Mallory and the stumble went away.