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Old 09-25-2008, 09:14 PM   #1
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Chevy 350 small block V8 swap

Has anybody ever done this?? Since I need a new motor im thinking of doing this..I know im guna need a new trans and a new cooling system but I was wondering your input on this..I know it can be done just wondering if anybody has it

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Old 09-25-2008, 09:42 PM   #2
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Nope, but it's in my future... I can see it.

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Old 09-25-2008, 09:55 PM   #3
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I saw a nice TJ on Ebay yesterday with a 350 in it...it looks like it was made to be in a jeep.
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Old 09-25-2008, 09:58 PM   #4
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I heard of a guy doing a V8 swap once. He said it was expensive.
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Old 09-25-2008, 11:22 PM   #5
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Well of course its guna be expensive...Owning a jeep is the most expensive hobby out there lol
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Old 09-26-2008, 09:55 AM   #6
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I put a chevy LT1 with a 4L60E transmission in my junk. So I have it. I'm also in the process of stuffing a Vortec 8100 496 big block in a TJ. What all do you need to know?
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Old 09-26-2008, 11:12 AM   #7
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I am in the process of dropping a 305 into my Jeep, it isn't very difficult just takes a lot of researching parts and such to fit. You will also either have to get an adapter to your transmission, or swap your tranny and t-case like I am doing. Novak Adapters is a good place to look for the adapters, and that is where I bought my motor mounts from.
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Old 09-26-2008, 11:53 AM   #8
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well its not going to pass emissions testing... go with a 5.7L hemi engine ... there are kits available for those to wire engine to computer.. and to emissions standards.. 350 chevys are now illegal for road use
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Old 09-26-2008, 12:22 PM   #9
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well its not going to pass emissions testing... go with a 5.7L hemi engine ... there are kits available for those to wire engine to computer.. and to emissions standards.. 350 chevys are now illegal for road use
maybe in your state.
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Old 09-26-2008, 12:22 PM   #10
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Yeah, my dad has a 350 in his TJ and its legal here.
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Old 09-26-2008, 02:49 PM   #11
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Some states are so strict that any motor swap has to be from a newer vehicle, AND it has to be the same class of vehicle from the same manufacturer. The biggest 50 street legal engine for a jeep is a V8 from a Grand Cherokee I belive.
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Old 09-26-2008, 05:20 PM   #12
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Some states are so strict that any motor swap has to be from a newer vehicle, AND it has to be the same class of vehicle from the same manufacturer. The biggest 50 street legal engine for a jeep is a V8 from a Grand Cherokee I belive.
you've been watching too much Xtreme 4x4.
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Old 09-26-2008, 05:29 PM   #13
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you've been watching too much Xtreme 4x4.
haha, every weekend
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Old 09-26-2008, 05:41 PM   #14
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lol i thought that sounded familiar not to get off topic where is jesse?
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Old 09-26-2008, 06:11 PM   #15
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quit. Onto other ventures.
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Old 09-26-2008, 06:14 PM   #16
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quit. Onto other ventures.
Say it ain't so!
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Old 09-26-2008, 08:18 PM   #17
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Well Im really wondering if this is going to be a REALLYY expensive project or can I just grab a 350 say out of a el camino or something and get a junk yard trans and buy a new cooling system. Now I also heard if your going to use this as a daily driver your going to have a shit load of problems..True or not true? Basically my motor is shot and I had a 2.5 so Im looking to upgrade with a bang I guess you could say this might be a little over kill..But I really want a nice motor in it
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Old 09-26-2008, 09:32 PM   #18
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Not to bad of a swap I have a TBI 350 700r4 auto in my 02 tj I had the 2.5 and needed more power for offroading. This is my daily driver running 35's I had to swap the turdy5 to a ford 8.8 with disc brakes. used the stock driveshafts for a bit till I lifted it more and did a home brew SYE with a front cv Tj shaft shortened for the rear. Plan on a couple grand for parts Motor mounts tranny adapter blah blah blah. with auto tranny it has to be rebuilt to install tailshaft. Some people are using a 231c hd from a GM and using the back half of the stock jeep t-case saves on not having to buy adapter plus you get a much heavier t-case. When you get close or need info let me know.

Thanks Mike
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Old 09-26-2008, 09:51 PM   #19
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Well I am doing the actual swap of my 2.5 for my 305 small block this weekend, I will take pics and let you know how it goes. I believe I have pretty much everything except for the drive shafts. Depending on how the motor/tranny/t-case fits will depend on how long or short the drive shafts will have to be.
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Old 09-26-2008, 09:53 PM   #20
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Sounds good man would love to see pics of that..How much do you think I would be spending 3,000 ish?
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Old 09-26-2008, 09:57 PM   #21
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Depending on how much you get the motor for and exactly how much you are going to replace new/salvage. I bought my motor for $300 and replaced all seals, plugs, wires, EGR valve, Carb, headers, alternator, P/S pump, water pump, bought a NV3550 5 speed tranny, and a bunch of other stuff. Brackets for mounting all the stuff I picked up from the junk yard off some old chevy trucks. I ordered motor mounts from Novak. Probably run a total of 2k to 3k.
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Old 09-27-2008, 08:36 AM   #22
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Yea thats what i figured..Just got check craigslist lol..Let me know how you make out and good luck with it
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Old 09-27-2008, 10:17 AM   #23
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do you really think a d35 will hold up to a v8?

im seeing an axle swap in your future
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Old 09-27-2008, 11:39 AM   #24
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do you really think a d35 will hold up to a v8?

im seeing an axle swap in your future
on the street maybe. But one day it will fail i'd bet
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Old 09-27-2008, 11:48 AM   #25
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As far as I know, when you do a swap, ALL the emissions equipment has to go with it, and it has to be at least the same year or newer than the one you are replacing.
That can mean ALL evaporative equipment, canisters and tank, cat converter etc.

In California you take it to a regular smog station for testing, of course you will fail for not being stock. They send you to a special state operated center called a Referee Station (you have to have failed first.)

The Referee tests it as the Chevy or whatever the donor was. They want to see it with all the emission devices, computer, cat, evap system, etc just like it was in the donor vehicle. If it's just like it was in the donor, the emissions should be the same, so they test it accordingly.

GET THE ORIGINAL DONOR'S EMISSIONS STICKER!

They look at it as the original engine with a different body, not a different engine in the original body.

Then they issue a special sticker that a regular smog station uses to check it in the future. It's not all that difficult, just a PITA.

That's all in addition to making it fit, the cooling system mods, the drivetrain mods all the mechanical challenges.

I haven't done one in years, but I found it best to buy the entire donor vehicle, not just a junkyard engine. There's always that "thing" you forgot to get from the yard, then can't find another one like you need. For example the VSS - vehicle speed sensor. You'd never suspect you'd need the speedometer for an engine swap.

California is usually the hardest place to do things like that. But check your local laws - start by asking a local smog test station that's been involved with a few. They'll tell you the ins and outs of it. If you talk to your local govt agency, you'll probably get the run-around or misinformation.
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Old 09-27-2008, 06:09 PM   #26
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Depending on how the motor/tranny/t-case fits will depend on how long or short the drive shafts will have to be.


When i set my motor and tranny in I pushed them as far back on the AA mounts as they would go ended up 1/2in forward from stock. both my stock driveshafts worked.
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Old 09-28-2008, 01:40 PM   #27
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putting the chevy block in

if i were to put a chevy block engine into my 94 YJ would i need to do any modifications to make it fit
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Old 09-28-2008, 01:51 PM   #28
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if i were to put a chevy block engine into my 94 YJ would i need to do any modifications to make it fit
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Old 09-28-2008, 02:20 PM   #29
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if i were to put a chevy block engine into my 94 YJ would i need to do any modifications to make it fit
nope. Complete drop in. You don't even need to turn any wrenches.
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Old 09-28-2008, 08:21 PM   #30
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nope. Complete drop in. You don't even need to turn any wrenches.
HAHA I heard If U rub the wrench 9 mexicans come out and do it for you

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