Carb ID and Rec help:) Holley's

[Oracle]

Got a care package for my jeeps in the post. Here's the numbers, both are 4 barrels, drastically different venturi size and construction. Larger venturi one is Aluminum, 1/4 the weight of the other which is HEAVY!!!
Can someone fill me in or point me to a discussion of the relative merits of the 2?
1. Large venturi aluminum ="12r-10658b"
2. Small but HEAVY= "LIST 1850-2 0850"

Which one would you think would be best? both seem in very good condition, tight shafts etc. would plan on rebuilding before installation.
Thanx in advance
smile.gif

[Oracle]

Ok additional information. The shiny one is a 4011 model and the heavy one is a 4106. Hope that helps smile.gif which one is better for the jeep application?

[coolram]

The 1850-2 sounds like a holley 600cfm 4bbl carb.4106 is generally an Edelbrock carb part #(a 600cfm I think).

You could try Holley's or Edelbrock's websites with the numbers but I'm sure someone will give you the answer here.

[ May 27, 2002: Message edited by: coolram ]</p>

[blt2krl]

It is a holley 4160. I have this carb and I love it on and off road.

[Oracle]

blt? do you have the offroad kit on your holley? does it work? i assume from your name that you do the steep rocks? does it flood out? or run clean smile.gif Thanks smile.gif

[jeepbob]

The list 1850-2 is a great carb for off road use. It is a 600cfm single feed side hung float vac secondary carb with #66 jets, a 6.5 power valve, .025 accel nozzle and plain colored secondary spring. It will have the spring assists on the floats so no "off road" kit is needed. Personally I would go up to #68 jets and a .034 squirter and the lightest secondary spring and you should be pretty close.
The 1850 -2 is what I have on my CJ. While I do not run rocks I do run gravel pits and get off camber and in goofy angles a lot and the Holly works great. The only other carb that I have seen giving the power and drivabilty of the Holly is the Demon StreetDemon 670 cfm carb on my buddies CJ5.

[ May 27, 2002: Message edited by: jeepbob ]</p>

[blt2krl]

I don't have the off-raod kit. The only thing I did was to put a crossover tube on. It looks like the tube on the truck avenger carb except mine is made out of rubber fuel line. work great for rock crawling.