4.0 jeep Cherokee to 70 chevy swap?

[camaney]

Hi i have a question has any body swap a jeep engine and tranny (2wd) into a chevy . I have a 292 that's ready for a rebuild also have a 97 cherokee that was in accident and thougt about puting that eng/tranny combo in it has anybody did that before is it possible? Thanks
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[gearys 5600]

Most people put a v-8 chevy in place of the jeep 4.0.

[camaney]

Yea. But I don't want a v8 already have one I wanna stay with 6 inlined.
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[292farmer]

i believe he means if the v8 will go in a jeep then the 4.0l will go into a chevy, you will need most likely a trans adapter and to move motor mounts at the very least on the passenger side, im assuming this truck was 292 equipped originally?

never mind on trans adapter i see your taking jeep trans too, will need new driveshaft possibly unless u position motor and trans so to keep original driveshaft. dont forget if the 4.0 has any ecu stuff to make sure u grab all of that

[cheepin]

Do you need to have your truck inspected?If so I wouldn't do it.In order to pass inspection you would need to have ALL the 4.0 smog stuff in place.
I would say just rebuild the 292 and keep the truck with all chevy in it.

[camaney]

No smog for 76 and older in Cali .. I got the whole car (jeep)
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[292farmer]

you might find the 4.0 will be a dog in the truck too. even with the stroker 4.7 version your .1 liters short of a 292 however i guess aftermarket parts are more affordable and cheaper for those 4.0s. i would give this some thought before u jump at it. are u planning on swapping the 292 back in after a rebuild?

[shiner2001]

Originally Posted by cheepin

Do you need to have your truck inspected?If so I wouldn't do it.In order to pass inspection you would need to have ALL the 4.0 smog stuff in place.
I would say just rebuild the 292 and keep the truck with all chevy in it.

I believe that inspections are based on the chassis, not the engine. Meaning if you have an old engine in a new truck, you still have to have smog requirements of the new truck met (cats, O2 sensors, etc). That's the way I've found it to be in Texas with my swapped engines/trucks at least. Of course it's different everywhere and I wouldn't even be able to venture a guess as to what the hoops you have to jump through in CA are like.

[7dguy]

I've owned three jeeps with the 4.0 setup; bulletproof and very smooth. I can see why you'd want that powertrain. I don't think it will be "a dog" since the Grand Cherokee our c10's share nearly an identical curb weight. Might suggest researching your rear diff gearing though.

[camaney]

In California we don't have any inspetcions (smog or any kind)76 and older... I was thinking maybe if I can't go fuel ingected go carburetor.. But I'm just thinking for now. I was just wondering if anybody had donnit and if what problems will I encounter
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[stich626]

other than fab'n up mounts and a efi in tank pump and return, it's a piece of cake..

[camaney]

oh yea... I think I can use the tank from the jeep pump and lines..thanks for the idea..

[shiner2001]

Even if you can't use the Jeep tank, there are plenty of aftermarket pumps you could mount externally on the rail near the tank that would feed that engine very easily. Even better if you're still using the in cab tank.

[Beelzeburb]

Originally Posted by camaney

In California we don't have any inspetcions (smog or any kind)76 and older...Posted via Mobile Device

You may not have to comply with an annual vehicle inspection, but if you live in the state of California your vehicle is still required to meet emissions standards unless it was manufactured before the mid 1950s when emissions equipment was first implemented. If an officer were to pull you over and suspect something was up with your drivetrain, he/she could order you to have it inspected by a BAR facility and if you didn't have all the emissions equipment hooked up it'd be a mess to deal with.

27156 (b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.

As a side note, a stock 292 made 130 hp @ 3600 rpm and 235 lb-ft torque @ 1800 rpm while a stock 4.0L makes 190 hp @ 4750 rpm and 225 lb-ft torque @ 4000 rpm.

[shiner2001]

Originally Posted by Beelzeburb

You may not have to comply with an annual vehicle inspection, but if you live ins the state of California your vehicle is still required to meet emissions standards unless it was manufactured before the mid 1950s when emissions equipment was first implemented. If an officer were to pull you over and suspect something was up with your drivetrain, he/she could order you to have it inspected by a BAR facility and if you didn't have all the emissions equipment hooked up it'd be a mess to deal with.

27156 (b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.

Wouldn't a cat and a muffler fill that need?

[Longhorn Man]

there is a ton more to smog regulations than a catilitic converter.
He'd need the fuel tank, the charchol canister, even the check engine light would have to work, all the sensors on the engine, tranny, everything.
It's doable, but not easily.
If memory serves, people in Cali are being threatened with all cars post 1964 getting smogged again, like it used to be. I'm not sure what the cut off was with light duty pick ups... maybe 69... but if and when it goes back to the old standard, then the old truck would have to pass as a 97 cherokee. On top of that, a normal smog station wouldn't do it, they'd make him go to a refere to inspect every thing and look for improper shortcuts.
It'll be a pain at the very minimum to keep it 100% smog legal.

[Beelzeburb]

Originally Posted by shiner2001

Wouldn't a cat and a muffler fill that need?

As I understand it, in regards to engine swaps, the emissions equipment that is original to the newer swapped in engine must be present. That would include any EGR, CCV, PCV, properly routed vent and breather hoses, catalytic converter, charcoal canisters, OBDI or OBDII diagnostic ports, etc, etc....

[camaney]

well im not talking any legal stuff here but i do want to be in complice with the regulacions..all that at side. i really like the way jeeps run with that set up. remember im just thinking about it since the jeep is already here it has overdrive 78000 miles and dont plan to fix it becouse is not worth my time and money but before i get rid of it I wanted to know if anybody had any experince about it.. thanks

[70 shorty]

I have 232000 miles of experience with the 4.0 in my Grand Cherokee. Great engine, but can't comment on dropping it in one of our trucks.

[capev86]

sorry, but the 4.0 doesn't excite me. even the stroker 4.2 like they featured on powerblock awhile back doesn't get my blood pumping like the 292 chevy engine. i say rebuild the chevy motor (roller valvetrain, fuel injection, hot rodding tricks, etc) and forget you ever mentioned that measly little jeep "boat ancor". sell it to a jeep guy to pay for your project. in a full size truck, a properly set up 292 will give you more bang for your buck than a smaller engine and probably comparable gas mileage too as it doesn't have to work so hard.

[camaney]

I not looking for a race, gas saving or fast truck.. (thats why i got a mustang)
we all know they are not fast and i dont care about it ..i just want a relible truck . is the 250 l6 almost the same size? and jeeps 4.0s are very reliable engines

[shiner2001]

Originally Posted by camaney

I not looking for a race, gas saving or fast truck.. (thats why i got a mustang)
we all know they are not fast and i dont care about it ..i just want a relible truck . is the 250 l6 almost the same size? and jeeps 4.0s are very reliable engines

You can look at my signature and tell that I'm not just a Chevy guy, but even though I'm not running the 4.0 in anything of mine right now, it is indeed a great engine. It's torquey and I think it will do you right in one of these trucks. Sure there are bigger and more powerful ones, but you just have to figure what you'll be doing with the truck. Now, all that being said, this wasn't a thread of "should I or shouldn't I" but "How do I," so all this is probably a moot point anyway!

[camaney]

Thanks.. I'll be searching to see if anybody did it on other vehicles .
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[raycow]

We recently had a similar discussion in another thread, and the general consensus was that anything older than 75 is exempt from smog inspections in CA, so it doesn't matter what kind of engine you put in there.

Now with that out of the way, the swap is certainly doable. The engine will physically fit, although you will have to cobble the mounts, linkage and plumbing. Don't even think about trying to adapt the Chevy transmission. Just use whatever is bolted on to the back of the Jeep engine now.

Btw, I have owned several of these AMC engines, and they are fully the equal of the Chevy 6 for reliability and withstanding abuse. The only design feature I don't care for is the chain-drive camshaft.

Ray

[petey-pablo]

Heres a link for Cali.. http://www.arb.ca.gov/msprog/aftermkt/replace.htm


Engine Changes
Engine changes are legal as long as the following requirements are met to ensure that the change does not increase pollution from the vehicle:
The engine must be the same year or newer than the vehicle.

The engine must be from the same type of vehicle (passenger car, light-duty truck, heavy-duty truck, etc.) based on gross vehicle weight.

If the vehicle is a California certified vehicle then the engine must also be a California certified engine.

All emissions control equipment must remain on the installed engine.

Vehicles converted to 100% electric drive, with all power supplied by on-board batteries are considered in compliance with the engine change requirements. All fuel system components must be removed prior to inspection. For additional information contact the ARB helpline at (800) 242-4450

After an engine change, vehicles must first be inspected by a state referee station. The vehicle will be inspected to ensure that all the equipment required is in place, and vehicle will be emissions tested subject to the specifications of the installed engine.
Exemptions for Uncontrolled Vehicles
Vehicles that were manufactured before emission control regulations took effect are called uncontrolled vehicles. Aftermarket parts regulations and anti-tampering laws do not apply to these vehicles.
Uncontrolled vehicles may have any aftermarket add-on or modified part installed as long as the vehicle can still meet the tailpipe emission standards for the year of the vehicle. Uncontrolled vehicles must retain any original or retrofit crankcase control (PCV) devices and NOx device required for the year of the vehicle.
The following vehicles are considered uncontrolled vehicles:
1965 and Older : U.S. Manufactured California Certified Vehicles

1967 and Older: U.S. Manufactured Federally Certified Vehicles

1967 and Older: Foreign Manufactured Vehicles