Weber Jet advice

[kyhunting]

I would like your advice on what size jets to run.

Track only car.

Weber 40's

2.0L six
69S spec heads
GE60 cams
10.5:1 Pistons
Race gas
36mm choke tubes
1.5" headers

Thanks

David

[Eagledriver]

I don't have jetting sizes for you but regardless of what you get you'll find each engine is a little different and you'll want to dyno tune or buy a wideband O2 guage. I just put a guage in my car and found an excessively rich mixture. I was able to quickly tune my carbs to a much more optimum AFR.

-Andy

[chris_seven]

36mm venturis on a 2.0 litre seem a bit on the big side.