I wasn't having much luck with this on the Jeep board, but thinking that it is a Ford Carb too, I'll ask here too.

Here is what I think I know...there are three versions of the Motorcraft 2 bbl. The 2100, 2150, 2700. I currently have the 2100. I am looking for possibly a little more CFM than what the 2100 currently puts out, but I don't want to lose the extreme angles that I can currently run at with my 2100. Is it even worth trying to put on the 2150 or 2700, or am I just wasting my time. I am just trying to add a little power potential without losing the off-road capibility of the carb. Also does any one know the relative specks of the carbs as far as CFM.

From what I hear:
2100 = 300CFM ?
2150 = 400-450CFM ?
2700 = ?

It will be going on a AMC 360 with a stock 2 barrel intake.

I wouldnt bother with the 2700, as i think these are a little different, not a lot, but enough. i ran the 2150 on a few different trucks, and have swapped a few 2100s out for this carb,and the performance gain was definitely noticeable, and i saw no difference at angles, or on sidehills.

ok, 2150 and 2700 are new ones to me. I've only ever refered to the 2bl as a 2100. For larger engines the 2bl cam with larger venturi. this was designated in inches by a cast # on the driver side of the bowl. 'Most' 2100's will show a '1.08' or '1.12' on the side. This means the venturi is 1.08 inches in diameter. I've seen them as big as 1.23 on a '70 Galaxie with 390FE. How this equates to CFM I've never seen a conversion chart and I've never bothered with the math.

The size designation is the same for the 4100 4v carbs.





Eric