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-   -   305 swap (http://www.wranglerforum.com/f118/305-swap-242981.html)

Codynice 05-16-2013 06:50 AM

305 swap
 
Alright i started my first swap today into my 99 tj. I got a 305 chevy small block has anyone done this swap yet im curious to see what problems everyone had and is there any pointers on doing this swap, thanks guys.

indirocz28 05-16-2013 07:03 AM

Plenty of people have done V8 swaps.

You need to stop where you are, and go fuel injected.

The issues you will have anyway are the gauges and wiring, but it just takes some time not really a huge deal. There are plenty of posts here on the forums and internet. Google is your best friend.

I put a TBI 350 into my 1990 YJ and wired it all up. Ran like a top.

The most important thing is for you to take your time. Do stuff right, and expect it to cost a good amount for parts. Don't expect this to be a $300 deal. You will need a radiator also. Which can be found on E-bay for $175-$500.

Look at Novak Conversions or MORE for motor mounts. Most people recommend MORE over NOVAK or Advance Adapters.

Do your research.

Like I said. Take your time. Go fuel injected so that you have technology, and better mileage on your side. Do it right the first time. Not like the guy did who initially put a SBC in my first YJ.

http://www.wranglerforum.com/f118/my...it-238525.html

Currently working with a buddy to put a LSx 5.3L into a 2000 TJ with all NOVAK parts.

Codynice 05-17-2013 06:48 AM

thanks man i didnt know if i wanted to go fuel injected or not so you just helped me out alot

indirocz28 05-17-2013 09:34 AM

Fuel injected is the way to go man. I hate carbs in the first place, but I also feel that swapping an engine and putting a carb on it is taking the easy way out. Plus most of the time you have more issues with a carb than fuel injection.

Whichever you decide, get the MORE motor mounts though..

Crashzx6r 05-19-2013 04:42 PM

305 will be ok, but 305 is not a great motor. You can do a simple swap and get good mileage with the right gears, and I agree efi is way to go you can still get mige with a carb I know a guy averaging 17 mpg with 350/ 650 cfm holly 4 brl.

I am doing a swap, with carb but only because ill be doing a LS swap in the future I have no use to waste money or effort twice and I have seen enough good sbc with carbs perform. Do what you can afford and make sure you don't do anything outside your limits don't wanna see you have a basket case you lose interest in. See it all the time.
Ps you can scoop a fresh LSx 5.3 with harness and ecu shipped for 1700 then mate ur trans and crank it up

Codynice 05-23-2013 06:41 AM

Thanks guys i think im going to leave the carb on it for now and maybe later on down the road il do fuel injected when i have the money thanks for the help

indirocz28 05-23-2013 06:47 AM

You can pick up a FI engine for $450, or actually, you can use your same block and heads and pick up a TBI intake manifold, thottle body, computer and wiring harness if you want to stay on the cheap.

kruger 05-28-2013 07:59 PM

Just did this on an older Jeep. Converted a 2.5 to a 4.3 Vortec with a carb. Yea, I know, its a V6. But, it is essentially the same swap. One thing to keep in mind is that you will have to drop the fuel tank, pull the fuel pump and buy a fuel pump that will work with your carb. Or, get a fuel regulator to get the pressure down to something that wont swamp the carb. Good luck and do massive amounts of head work before you do anything with your hands.

indirocz28 05-28-2013 08:13 PM

Kruger is correct. He has a pretty good build thread as well.

O_M_Jeep 05-28-2013 08:28 PM

Quote:

Originally Posted by Codynice (Post 3784699)
Thanks guys i think im going to leave the carb on it for now and maybe later on down the road il do fuel injected when i have the money thanks for the help

The reason people go with fuel injection is when off-road, anytime you try to climb, or go down a steep-ish grade, or get a little off-camber, your Jeep will stall, and stall, and stall, and stall, then stall some more, and then, while your waiting for the guy in front of you to make it, it'll stall, and then stall, and stall, then your starter is getting hot, your battery is getting hot, your getting pissed and the trail is still long.

Don't cheap out and use a carb, not only will you hate it, but everyone on trail with you will get testy while you try to keep it running.

If you absolutely don't want to use fuel injection, convert it to a propane engine, propane doesn't stall, it's cleaner, it's cheaper then petrol and it's easier on your engine provided you keep up on the lubricants.

Crashzx6r 05-28-2013 08:52 PM

Most people who dislike carbs have never used them. Or can't drive. Yes you have to keep it in mind on grades that are steep but it won't stall on any grade most of the time you have enough fuel in carb ( depending on carb) to do as you please and if down hill you don't need throttle it will idle. Just use the carb I have for years in past and had Minimal issues. Do the carb a s wheel your jeep for now then while playing and enjoying your jeep you can be saving for efi swap.

Crashzx6r 05-28-2013 08:54 PM

Also depends on where and how you wheel, if you spend a lot of time in crevices and rocks twisted up then yea propane blow thru carb. If you mild wheeler then just use it! Lol don't over think it. No matter what fuel injection is the way to go but a carb can suffice.

indirocz28 05-28-2013 09:12 PM

Quote:

Originally Posted by O_M_Jeep (Post 3802056)
The reason people go with fuel injection is when off-road, anytime you try to climb, or go down a steep-ish grade, or get a little off-camber, your Jeep will stall, and stall, and stall, and stall, then stall some more, and then, while your waiting for the guy in front of you to make it, it'll stall, and then stall, and stall, then your starter is getting hot, your battery is getting hot, your getting pissed and the trail is still long.

Don't cheap out and use a carb, not only will you hate it, but everyone on trail with you will get testy while you try to keep it running.

If you absolutely don't want to use fuel injection, convert it to a propane engine, propane doesn't stall, it's cleaner, it's cheaper then petrol and it's easier on your engine provided you keep up on the lubricants.


I absolutely agree with this 100%.

I have seen many many carb engines stall out going up and down. They almost always need some sort of tinkering because of weather or humidity changes, etc.

Crashzx6r 05-29-2013 04:50 AM

Not everyone wheels like the Cameron's maybe he does have a right budget too I'm just trying to let him know it is possible to enjoy without efi for now. I've done it before and doing it now and I assure you I actually beat on my shit! But to op if u have the extra and the ability to do it scoop upper intake and efi parts off a late model truck. Or wheel it and drive it and save up for the swap.

O_M_Jeep 05-29-2013 06:32 AM

lol, it's not a matter of "wheeling like the Camerons", in fact, if you DO wheel like the Camerons, flying through the air in 500 BHP buggies, EFI isnt so much of an issue, it's when you are going slow or idling, that's when a carb will stall out on you constantly.

Maybe he cant afford an EFI engine, or a vaporizer to run propane, but it's not like this is a cheap and budget friendly hobby, most people don't do engine swaps, they are expensive, if their engine gets damaged, they replace or rebuild with the same engine, that's not what the OP is wanting, the discussion was about the pros and cons of fuel injection.

Crashzx6r 05-29-2013 08:45 AM

Don't get your panties in a bunch just stating from experience that in slow rolling situations I have never had issues with it. Also it would be a problem with a carb to bounce 800 hp or more buggies up hills I was stating that not everyone needs efi. I agree that you should have it not need it to operate your rig. It has its ups and downs but it will work for him.

wrjr54 10-22-2013 11:08 AM

305 swap
 
I did this swap and have been very happy with it. I got the motor out of a 91 caprice also used the 700r. I used novack for the conversion parts Rad,trans output shaft for 231, motor mounts( liked these because they allow adjustment up down front back) mine has the TBI for wiring go painless its worth the mony in time saved.I rebuilt both motor and trans.

MTJeepTJ 10-22-2013 12:55 PM

Quote:

Originally Posted by O_M_Jeep (Post 3802056)
The reason people go with fuel injection is when off-road, anytime you try to climb, or go down a steep-ish grade, or get a little off-camber, your Jeep will stall, and stall, and stall, and stall, then stall some more, and then, while your waiting for the guy in front of you to make it, it'll stall, and then stall, and stall, then your starter is getting hot, your battery is getting hot, your getting pissed and the trail is still long.

Don't cheap out and use a carb, not only will you hate it, but everyone on trail with you will get testy while you try to keep it running.

If you absolutely don't want to use fuel injection, convert it to a propane engine, propane doesn't stall, it's cleaner, it's cheaper then petrol and it's easier on your engine provided you keep up on the lubricants.

Well I agree with this comment 100% also. And i speak from LOTS of wasted money and time playing "OFF ROAD" carb tuner with my old K5 blazer. Lets see, to start i had the holley off road avenger carb, tuned just like several write ups told me. I had an adjustable fuel pressure regulator to turn the psi down to 2-3 psi while rock crawling. And still, my blazer would stall on REGULAR jeep trails. It didnt idle when desending a steep incline, IT SHUT OFF. It is embarassing and it does suck. Keep in mind this wasnt a 44" bogger equipped one ton crawler this was a weekend warrior blazer. And i stalled it all the time. Then, the clouds parted and i purchased HOWELL TBI. 4 mpg better, cold start drive away from curb. And it will run upside down, oh and MORE POWER.

Second, I just could'nt imagine driving a TJ with a carb. Talk about downgrade. I even did howell TBI on my dads 74 CJ5 to avoid the carburetor blues.

Go ahead and flame on CARB defenders!!!! Im sure somebody here has climbed everest with a carb on his JEEP!:rolleyes:


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