350 Small Block Conversion - JeepForum.com

 
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post #1 of 14 Old 11-10-2013, 10:35 AM Thread Starter
Boondocks4x4
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350 Small Block Conversion

So I have a 96' Grand Cherokee and im thinking of doing the Chevrolet 350 conversion on it. What are the pros and cons of doing it? Any tips or advise?

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post #2 of 14 Old 11-10-2013, 12:40 PM
xcaliber81
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your jeep wont like the chevy engine, why not spend the $$ and do up the 5.2 or is yours a 4.0? and the starter might not be on the proper side and the trans might not work from 318 to 350.
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post #3 of 14 Old 11-10-2013, 12:58 PM Thread Starter
Boondocks4x4
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I have the 4.0 in it right now. I love the motor I just want more power
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post #4 of 14 Old 11-10-2013, 01:05 PM
Snowfan2
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I would install a 5.9 and either build it, supercharge or turbo it, or all three. Then I'd give the thousands of dollars saved to some hungry folk and call it a day.

95% of the engineering is already done for that. Putting a Chevy small block in will cost a fortune, take forever and probably not work well. It sounds fun but I would guess the fun will wear out long before the job is done. If you are in it for the advanced tech of a newer small block Chevy-go for it. Be sure to post the build.


Or



Go test drive a 9er.
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post #5 of 14 Old 11-10-2013, 01:10 PM Thread Starter
Boondocks4x4
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It will be a few months before I make a decision. But ill post the build for sure
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post #6 of 14 Old 11-10-2013, 05:32 PM
PolkaPower
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How in the heck are you going to make a Chevy motor and trans fit? Get out the saw zall!
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post #7 of 14 Old 11-10-2013, 07:27 PM
HighLonesome
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You may have a 350 long block or short block or small block, but not a big block.
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post #8 of 14 Old 11-10-2013, 07:39 PM
BoostinBubba
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If you're going to swap it, do it right. Use a Gen III Chevy smallblock, 4.8, 5.3, and the 6.0 are all excellent swap candidates. A 4.8/5.3 with a good tune is good for an easy 20-22 mpg in a ZJ.
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post #9 of 14 Old 11-10-2013, 07:58 PM
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I think you're putting a round peg in a square hole. Lots of more money for a Chevy product into a jeep.

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post #10 of 14 Old 11-10-2013, 08:36 PM
Bullwinkle_98ZJ
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Quote:
Originally Posted by Boondocks4x4 View Post
I have the 4.0 in it right now. I love the motor I just want more power
If you want more power then do the 5.2 or 5.9 mod. What the 4.0L lacks in power, it makes up for in reliability.
With just the 5.2, YOU WILL DEFINITELY NOTICE A DIFFERENCE.

With the GM block, you will have to fabricate something or a lot of things for it to fit.

If you go the MOPAR route, there are a ton of parts that can be had for DIRT CHEAP (outside of the engine and transmission) available at a Junkyard near you, that will allow a total BOLT-ON upgrade. No Torches, no Welding, no trips to a machine shop.


Good luck.

1998 ZJ Limited 5.2L (upgrades in progress)
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post #11 of 14 Old 11-10-2013, 10:08 PM
1slo_camaro
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I love my SBCs but if you want to put a SBC into a jeep go buy a CJ/YJ... If you want your ZJ to go fast then turbo/stroke the 4.0 or swap yourself a 5.2/5.9 throw in head/cam and tune and some gears and for that big brick im sure youll push it through the wind pretty quick

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PM me for 99+ intake manifolds for sale
$125-sandblasted and painted and shipped
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post #12 of 14 Old 11-11-2013, 12:48 AM
StPaul59
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Quote:
Originally Posted by Snowfan2 View Post
I would install a 5.9 and either build it, supercharge or turbo it, or all three. Then I'd give the thousands of dollars saved to some hungry folk and call it a day.

95% of the engineering is already done for that. Putting a Chevy small block in will cost a fortune, take forever and probably not work well. It sounds fun but I would guess the fun will wear out long before the job is done. If you are in it for the advanced tech of a newer small block Chevy-go for it. Be sure to post the build.


Or



Go test drive a 9er.

As much as I like the 5.9, I would say the 5.2 is a much better option. Parts are much easier to come by. Engine/trans/pcms... My old 5.2 with just a cat back exhaust and K&N was damn near as good as any stock 5.9. That thing flew.
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post #13 of 14 Old 11-11-2013, 05:03 AM
zj97ltd
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For what it'd cost to swap to a GM drive train you could probably shoehorn a late model Hemi and trans in there. Either way it won't be fun, or easy.
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post #14 of 14 Old 11-11-2013, 07:25 AM
Snowfan2
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Quote:
Originally Posted by StPaul59 View Post
As much as I like the 5.9, I would say the 5.2 is a much better option. Parts are much easier to come by. Engine/trans/pcms... My old 5.2 with just a cat back exhaust and K&N was damn near as good as any stock 5.9. That thing flew.
I liked my 5.2 also.
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