I'm gonna catch a lot of flack for this, but I like the 2bbl Rochesters ($ ? get them at the junkyard of a 2bbl GM V-8) and the 2bbl Holley 500 cfm ($175.00 /-).

 

What? Do you like to save gas or something? I can't blame you. I run a 2bbl and if either of those carbs fit go for it. I like the Holley but the Rochester is just as good.

Tim Springer
1980 CJ7

 

Will a 500cfm Holley fit the 4.2L manifold? Is $175 Canadian or American dollars? New or Used? Is the gas milage the same as a lower cfm? What is the performancew gain like?

AAF-RODE-4-LIEF
Rylan D.

 

I've had zero experience with these, but I thought I'd throw them out there anyway.

Rochester 2g/2gc
Motorcraft 2100/2150
Holley 2300 series (may be able to find one off a Ford)
Pre-computerized Carter BBD
GM TBI (a friend got one with just about everything he needed for $200 Canadian)

jo-jo
'77 CJ5 Fozzy Locker
20 degree RTI 1250

 

I like a Q-Jet myself. I don't know if they're available for the 258, though.

 

i like the Holley 390cfm carb, it's a vacuum secondary 4-barrel, and has great off idle throttle response. Holleys do require some attention from time to time. i run my fuel level pretty low and it does good at angles, for a carb. (you will need to get another intake manifold and it's not smog legal, and it will cost more $)

3/4tonYJ

 

I still like the weber configuration. Brand new, no used crap to deal with, comes with all the correct adapters, tunes as a 1 barrel (only one mixture screw, not 2 screws to balance) comes with an air cleaner, linkages, etc., run you about $350 I guess. I really have been very happy with mine. Combined with the GM HEI distributor makes a nice 6 cyl. Jeep.

Good luck
Pete

88YJ,4"susp,33"BFGMTs,9000#winch, hm swing out TC/HL mount ,258,999,4.10,weber32/36,GMHEI.

 

I have to agree with Pete. Spend the little extra and get the Weber 32/36, NOT the bigger one. I've been running one on my CJ-7
for going on 2 years, works great, and I'm still using the stock ignition.

Brad (from the 4 Wheeling center of the universe, 4 corners USA)

 

The Weber 32/36 is a great carb for the 258 CI motor. Pick up is better, idle is better and the engine runs quieter compared to the stock carb. Cost will run about $350 or so but it has all parts needed and can be installed in an afternoon. You may need to have the ignition computer bypassed if you're still using the stock distributor.

CJ8George
o[[[[o
85 CJ8,258,Weber32/36,4" BDS lift,4.10,35"tires,f/r lockers

 

I have an 85' CJ7 with a 258. I used to have a Weber on it, but switched to a Holley 500ccfm. It runs great now. Noticeable increase in power.

Dave