I'm a big fan of using what you have. Depending on the condition of your 153s you could almost build both with one v8 kit. Pistons, rings, lifters, rod beatings, valve springs, valves (maybe some head work). V8 kits are pretty cheap. You would beed Gaskets & main bearings.
For the 181 if needed you could most likely re-jet your carb. I doubt milage would change much. The bigger engine wouldn't be working as hard. You would gain some bottom end torque, handy in a 4x4. I have a complete 151 (iron duke) from a '80 ( I think) YJ ? It has a 2bbl carb and that carb and intake might fit some of the 181 heads. I believe it is progressive. I need to find something to stick that engine in.
I hate having to make these choices. It is one of the reasons I have so much junk sitting around.
Last edited by Beater of the Pack; 11/25/24 04:49 PM.
