I am having trouble with my wife's truck, 84 ranger 4x2 5spd-duraspark conversion. Last year, the carb solenoid, the one that meters the air, went out and I was not able to find a replacement. Trying to get the truck going, I performed the duraspark conversion. (79 mustang 2.8l distributor, ign module, coil, the only thing I didnt get was a carb). I used a rebuilt 2150 off of my 302, reson being, they were both stamped with the same flow rate (1.08) which, according to the chart here would be 351 cfm.

The flow rate seems right (171 x 6250) / 3456 =309.25 x 0.8 = 247.4 x 1.414 = 349.8 cfm
(Holley Formula) CID x MAX RPM / 3456 = MIN CFM x ability to breathe (average is 80% stock - 0.8) = required 4 bbl cfm x 1.414 (correction to 2bbl) = 349.8

I dont know if the carb is working right or not, and I cannot figure out the ignition. All wires are where they are supposed to be; no spark. All connections test to specifications.

Would it be worth it to get a Holley 2300 350 cfm 2bbl? I here holleys dont like to be forgotten about

thanks for your time

 

Have the module tested. The motorcraft carb will be fine, but maybe rich. Read above posts about 2150 carb for more info.