So I'm building my numbers matching block to run straight propane and stroking it out in the process.
I have found as close to an itemized list of parts as I could for a propane stroker build
Jeep 4.2L 3.895" stroke crank
Jeep 4.0L 6.125" rods
CompCams 68-231-4 206/214 degree camshaft
Ported HO 1.91"/1.50" cylinder head
Keith Black IC945-030 pistons
Mill block deck 0.030"
0.040" quench height
So I ordered the pistons no problem.
I am now going to order the 258 crankshaft but I can only find them for ~$450. So to save a few $ I'm gonna order it from a friend that works at carquest to get it a little cheaper.
Now at carquest they need casting numbers to order the right one.
I know that I want the later year 4.2L I6 crank since it has the 2" snout instead of the 2.5" just so I don't have to get the 3/8" spacer for it.
The 89" wrangler came with the 4.2L and has the 2" snout.
Does anybody know the casting numbers for a 4.2L from 1989?
Or from '87-'90 I believe the range is.