I have a 2000 jeep tj with an ax-15 transmission, np231 23 spline transfer case and upgraded driveshafts. I want to buy a smaller v8 and put into my wrangler. I not sure whether to go carb or fuel injected. I am thinking about going carb to drop the hassle of wiring. I am purchasing the adapter kit for the engine to tranission from Novak. I know I need different fan shrouds, radiator, different lines, links, exhaust and all that, but I'm wondering your opinion on carb or fuel injected and what motor to go with the ax-15 tranny. I'm not interested In buying a different transfer case or tranny because I do very light off-roading. Just wanted to get your ideas and what you have done. Thank you!
Do you have vehicle inspections in PA? This would be make or break for a carb'ed motor in many states due to the emissions requirement. I know some states require the same year if not a newer motor when doing a swap to ensure these regulations are met. Also why a 305 and not a 350? They are roughly the same size and 350's have much more of an aftermarket.
Carb or fuel injection: Fuel injection would be more efficient, not affected by steep climbs. At the same time, the holley 670 truck avenger on my AMC 360 powered cj7 worked pretty good. I grew up with carbs, so I,m very familiar with them. I don't know how emissions laws are where you live, so that may be a deciding factor. Its hard to beat injection for clean running. As for engines, theres nothing wrong with a Chevy 305. Its kind of a stroker motor compared to engines of similar displacement because its basically a 350 with a smaller bore. I don't think there are any other v-8,s of that size with a 3.48" stroke. I had an 83 chevy pick up with a 305, and it moved pretty good, but, If it was me, for all the work involved in a swap, I'd go with a 350. More power, same weight as the 305, and driven sanely , the tranny and t-case should be fine.
Okay thank you very much. I don't rip on my jeep or abuse it. I do light off-roading and
Trail riding and a good bit of highway. The way I drive the tranny and tcase will most certainly work.
Anyone got suggestions on a 350 motor year? Emissions are not a problem where I live. If I knew how to wire the computer and harness into my jeep I'd go with a fuel injected motor but unfortunately I don't and will more than likely be going with a carb.
Also anyone have any suggestions on taking out the old engine and tips on how to take it out? I'm taking out the old motor and tranny as well. Should I pull it out as one, drop the tranny first and pull the engine out or what?
I grew up working on carbureted engines and cleaning/adjusting/overhauling carburetors believe me, those weren't the good old days. As the others said, make sure you go with fuel injection. Carbs are the work of the devil... unless you have dual four-barrel carbs on your hotrod.
The not reason I'm voting for carb is because of the wiring that has to be done with a fuel injected motor. Does anyone have any info or a guide for wiring in the computer? If I can get a good guide and understanding of how to go about it I may change my mind. Has anyone done it that could give me information or tips?