258 amc 4 0 head swap software

There is a big following of amc enthusiasts that are cruising a 401 equipped javelin or trailblazing in a rock crawling jeep with a 4. The rebuilt head sat on a shelf for 2 years until i had time and the extra cash to finish the swap. This jeep stroker rotating assembly kit will contain. The amc 258 was introduced in 1971 in jseries pickups and wagoneers and in 1972 in cjs. Every engine is reverse engineered, allowing atk to find and remove any factory original defect.

Xtreme energy camshaft dyno results xtreme energy cams bridge the gap between magnum street cams and race only cams. Engine kits free delivery possible on eligible purchases. The 258 soldiered on with the old head through 1990, when it was finally retired and replaced with the 4. The inline 6 is also one of promars most popular engines. This pickup never requires adjustment and simply plugs right into an msd ignition control. Msd offers two probillet distributors to deliver accurate trigger signals and are maintenancefree. I just got a brand new aftermarket head from a buddy for installing his lift. Comp cams dyno graphs for hydraulic flat tappet and hydraulic. I ran an offy dual port with a 390 cfm holley on mine with a crane 2602nc cam, really ran strong. It was developed from the original amc six and will bolt in place.

The carfax report showed the roll over my jeep had in its forth year, and that it sat for a years in a couple of auction lots, and then sat in the dealers repair lot for another year. The number of miles the engine can get on it is based on proper service on both models. Arp cylinder head conversion bolt kit for jeep amc 232 4. It sounds like good hp gains, and much improved gas mileage. Just a quick couple questions for the more advanced amc gurus. If you are looking for oem jeep replacement engine parts or want to upgrade your 4. And those heads still bolt onto all motors back to 1964 introduction. Now if you wanted to do it anyhow, i think the thing to do would be to swap in a fuel injected 4. Ok folks, in light of my recent 350 debacle, it looks like ill be doing a 258 build.

All around performance gains, over the 258 of course, although i do miss the lower end torque that the 258 had. This attention to detail and quality will save you time and money by keeping your amc or jeep out of the shop and on the road. Partol carburetor carb for 19831988 jeep bbd 6 cyl engine 4. I have had four jeeps with the good old 258 inline six in them. And youd need a pressurized fuel system from the tank to the fuel pressure regulator. After chryslers purchase of the beleaguered amc, and the dissolution of the amc renault partnership, mopar took about to upgrade the 4. Head swap software free download head swap top 4 download. I have two 258s one is a 1990 006cl25 ef3235444 the other an 80 009c09 3235444. Example the cast number is or i need the driver side head do the following. I have not looked at push rods yes though, according to parts at rock auto the push rods are solid not hollow as the 4. It continued to be used through 1990 in the wrangler.

For those building a stroker motor hybrid from 258 and 4. Experience the thrill and ease of tailoring your truck or jeep with our guaranteed lowest prices on all performance and remanufactured engines products at 4wp. Now i purchased my jeep in arizona from a medium used car dealer that has several lots. Dont forget, the amc 360 and 401 will also bolt up just the same. Titan engines jeep strokers, remanufactured engines, and.

If you were in my shoes and wanted to do it, what performance. I used the zjs pdc and pcm, made a circuit to change the amc cruise control switch signals to match what the zjs pcm expected so i could have cruise control. The head has the 7120 casting number, which still has the temp sensor in rear of the head. Remanufactured long block amc 258 straight 6 19721988.

I picked one up to see how it would do, and the renix 4. Our cjs 258 put down 76hp to the wheels at 3,500 rpm and 129 lbft of torque at 2,600 rpm. The amc straight six has been produced in some form from 1964 to 2006, an amazing 42 years of service amc had an earlier flathead i6 they produced from 5865. Other than some minor mods to the water jackets that are easy to do yourself, the 4. As im sure any jeeper knows, these are the engines. This remanufactured engine site has engine swaps, performance engine upgrades and general information at links below.

I will be picking this up tomorrow and would appreciate some info on what needs to be pulled. My only concern is to see the comparison before and after the 4. What i used was a head and exhaust manifold from a 97 grand cherokee 2wd. Well known by amc aficionados and jeepers alike, the amc i6 was produced in essentially three incarcerations the 199232, the 232258 and the 4. The great thing about this engine is it reliable, inexpensive, and has horse power and toque peaks at low rpm. Titan engines is offering a unique opportunity to purchase a jeep stroker crankshaft. This video shows some adjustments to the throttle body fuel injection if you put a 4l head on a 4. I havent bought it yet and am looking for something cheaper than borla. I decided to replace all the parts that tend to go bad on these venerable jeep. I figure if youre reading this you must have an older cj or yj and have grown to hate your carburetor. After having doing this swap, all i can say is this is one of the best things i have done to my jeep.

Simple calibration wizard answer a few questions about your engine and it creates the base map. The amc inline six was used to replace previous engines like the 225 dauntless when jeep merged with amc. Fixed the rust problem, but now i have a tired 258 166k miles sitting out of the car, i was going to rebuild it, possible swap a 4. I found that head swap write up today but it appears most of the rest of the monsterslayer articles are gone. The brackets bolt up in a different spot than the 4. Ateam performance hei complete distributor 65k coil compatible with amc jeep straight 6 232 3. If this is true i would need to use a newer block to swap the 4. This build up article is intended to demonstrate one approach to building an amc 258 motor. Amc 258 buildup international full size jeep association. Most cranks are drilled for a pilot bushing, but check to be. Xtreme energy cams provide increased torque, vacuum, response, and power while still providing quiet operation of the valve train and the durability required in daily driven vehicles. Performance and remanufactured engines best amc 258.

So far heres my list of parts i need for the head swap, please correct me if i am missing any. Make sure that your jeep s engine has everything it needs for efficient operation with the right jeep 4. Id say closer to the 25 level if you ran the junk 4. At higher horsepower levels, injector flow requirements move to 26 lbhr and the pcm will need program.

All amc jeep v8s and all 1972 and later 258 i6s have the same bell housing pattern and share the same mounting bases. Top 4 download periodically updates software information of head swap full versions from the publishers, but some information may be slightly outofdate using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for head swap license key is illegal. Also does it have the high or low impedence injectors. Promar does not build their engines on an assembly line. It lined up fine to the cleanedup 64 head on my bench.

In this article i am going to explain the basic fundamentals of a notsohard shadetree mechanic head conversion on a 4. The 282 which had a larger bore is considered the ancestor of the 4. The motor itself is great off road because of its lowend torque and durability. Issues with this option are the head bolt differences 716 on 4.

Also upgrading the ignition to the hei system and adding a header. This crank has been specifically remanufactured by titan. It can be stroked with a crank from a 258 and its a pretty stout performer. Actually the 304 does not have that much more hp than the 258. Lots of info on this on the amc sites and you could make the case that it would be a mopar swap. I am looking into this if i can find the parts cheep enough.

I decided i wanted even more hp last year and started in on a 4. So far this is looking like it could be a very affordable swap for a couple more hp. While it doesnt have the displacement of an amc 258 crankbased stroker, the 258 cranks are becoming increasingly scarce and expensive so a ministroker offers a low cost alternative to more hptq. I know i have come across this info before, but cant seem to find it. I swear the jeep engineers had this head swap in mind when they designed. Im looking at building a motor for my 83 cj7 i have options, i have a 96 4. Edelbrock performer aluminum cylinder head for 7606 jeep. But good luck with the 304 it is what ever you want. It was one of four amc engines kept in production when chrysler bought amc in 1987 as it is known for its longevity.

My goals were to improve the performance of the 258 with mostly stock parts thereby keeping the reliability, and to spend as little money as possible. Ive found many posts with some hints of this in various ways, but id like some opinions on this. Atk builds remanufactured crate engines with a higher quality than new. Anyone done this and if so what else do you need as far as fuel delivery goes. At about 160,000 miles the original 258 started losing oil pressure. And the 40 to 50 hp range with a good header like the pacesetter 72c1129 and a holley 600 vac secondary 4 barrel.