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Post by dojoloach on Nov 20, 2023 13:21:11 GMT -8
I've got what I believe to be a great condition 360 with ~150k miles and good compression pressure I'm putting in a CJ-8. Does anyone know of any guys in the SouthEast?
Honestly if not I would be willing to travel elsewhere if its east of the Mississipi.
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Post by 69Rebel on Nov 20, 2023 16:13:40 GMT -8
Someone will be along to get you pointed in the right direction. Though if it were me, if I had a 360 in good condition, I might just run it as found. BTW, welcome to the Hideout.
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Post by dojoloach on Nov 21, 2023 4:27:54 GMT -8
Thanks for the welcome.
That's a good point and I probably will run it like that for half a year or so. I'm sure the itch will come for more power
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Post by spud on Nov 21, 2023 5:02:21 GMT -8
It oughta push a cj8 really good irregardless of assumed horsepower. Honestly if you have good compression and good oil pressure you are quite blessed. Its a crime to rebuild an engine that really dont need it. I’ve built my share of engines, and in my opinion, and i assure you, a stock amc engine can hardly be improved on for general duty, save a minor tune change with a good set of headers, a performer intake and a very conservative four barrel. Well within the average automotive enthusiasts capeabilities. Dont ever think you want horsepower. Thats a big mistake. Accept that you want torque improvement. You will be much happier with that truth. Especially in a jeep. They make poor chassis for high rpm power.
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Post by 69Rebel on Nov 21, 2023 6:09:58 GMT -8
Spud speaks with much wisdom.
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Post by 69Rebel on Nov 21, 2023 6:22:02 GMT -8
Also, we like pics. Sadly, ProBoards kinda sux, so one has to use a third party photo host.
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Post by javtwotone on Nov 21, 2023 9:03:10 GMT -8
It oughta push a cj8 really good irregardless of assumed horsepower. Honestly if you have good compression and good oil pressure you are quite blessed. Its a crime to rebuild an engine that really dont need it. I’ve built my share of engines, and in my opinion, and i assure you, a stock amc engine can hardly be improved on for general duty, save a minor tune change with a good set of headers, a performer intake and a very conservative four barrel. Well within the average automotive enthusiasts capeabilities. Dont ever think you want horsepower. Thats a big mistake. Accept that you want torque improvement. You will be much happier with that truth. Especially in a jeep. They make poor chassis for high rpm power. Well Spud, been thinking the same thing on the horsepower issue.. If you recall, I was all about not having my Commando off the road for very long, so the fresh SC397 built 360 went in, instead of going into the Rambler. The leaking, valve stem needing 304 then got some love from SC397 on his schedule. I love the sound of the 360, as well as the power, but it's no fun with the T-18 tractor transmission and 3:73 gears. If I get on it, it winds up sooo fast, the trans has no chance of keeping up. Jones sold me a 3:07 geared AMC20 for it, but the more I think about it, the T-18 still sucks and it just doesn't need this much horsepower. Not to cruise around with my wife on nice days anyway. Sorry to sorta highjack this thread, but just agreeing on what you really need in a Jeep. Seriously considering putting the 304 T-5 combo from the car in it and not worrying about it being a 4x4...
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Post by spud on Nov 21, 2023 10:13:22 GMT -8
Thats all pretty relevant info. Because it relates to the total package with the trans. And i had an 83 cj8, with a 258 t5 . It was pretty good , but the t5 gave out. I figure a 304 would have been perfect on the hiway. The 258 was plenty good off road but honestly lacked scoot on the hiway. It had 3.31 axles. Nothing is ever perfect i guess.
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Post by Captain Awesome on Nov 21, 2023 11:04:52 GMT -8
Welp, it's real nice to read reasonable conversations. Instead of everyone wanting always 425-650 HP. For what? The fast Guys put well over 1000 to the wheels. So your still slow with a temperamental engine. F that.
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Post by dojoloach on Nov 22, 2023 16:30:57 GMT -8
You know that's a great point, I suppose I'm a bit of a noob in that regard just wanting to make more torque for no reason.
I should correct my original statement and say the compression in each cylinder I'm told was over 150psi, and it was also running. However I haven't seen it run since purchasing. I'll try to grab some pics and numbers off the block
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Post by dojoloach on Nov 22, 2023 16:31:56 GMT -8
It's going with an Ax15 trans and d300 I should also add.
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Post by 69Rebel on Nov 23, 2023 8:00:06 GMT -8
A 360 is a 360. The block numbers are pretty irrelevant, IMO. The only difference is a '70 or '71 with a flat crank flange, which you can tell just by looking at it. If it has good compression, runs, doesn't clatter, and doesn't spew oil everywhere, I say just slap it in and run it.
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Post by spud on Nov 23, 2023 9:23:32 GMT -8
The 70 4 barrel 360 also had around 10.2 compression. The point of high torque in a jeep over hi hp, is a jeep needs strong off idle response to get a jeep with big squishy tires moving, and keep them moving in irregular terrain, at typical slow vehicle speeds. Now thats what jeeps notmally do. Its kind of dangerous flying around offroad at highway or dragstrip speeds in a poor handing bump steering floppy suspension jeep. Actually flying down the highway at full speed in a cj cam be pretty iffy too. So i always was curious as too what exactly the need for high rpm horsepower in a jeep was good for. Other than mud racing or scaring the shit out of yourself🤣 hp is what you have at engine speeds above peak torque. Peak torque generally is what you have around cruising speed, so horsepower gains generally are pretty useless, unless your into dropping a gear and hammering the throttle. Then horsepower comes into play. What is more important to you, getting there or getting there rally fast? Jeeps are generally a get there whenever you get there and enjoy the scenery kind of experience. If you wanna burn your gumbo monster mudders and yank the front tires off the ground you might think about a bigger inch chevy.
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Post by Captain Awesome on Nov 23, 2023 9:45:38 GMT -8
My Dad had a 78 2dr Cherokee. 360 AC TH400 3.07 gear. Full dress Jeep with 235/75/15. I believe he upped them from stock 225s. That thing had tons of torque for a stock 2bbl low comp 360. So much so, it sucked for off roading with stockish tires. It just wanted to spin and spin. His 258 auto 3.54 74 Cherokee was far better off road. I remember the 78 spinning in wet grass on a slope. Very touchy throttle....
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Post by dojoloach on Nov 29, 2023 5:35:42 GMT -8
My Dad had a 78 2dr Cherokee. 360 AC TH400 3.07 gear. Full dress Jeep with 235/75/15. I believe he upped them from stock 225s. That thing had tons of torque for a stock 2bbl low comp 360. So much so, it sucked for off roading with stockish tires. It just wanted to spin and spin. His 258 auto 3.54 74 Cherokee was far better off road. I remember the 78 spinning in wet grass on a slope. Very touchy throttle.... That's pretty banging, I'd like to have an old Cherokee one day. I've got 4.10 gears on the Dana 30 and AMC20. AMC20 is built a bit with one piece axles but I'm still not sure how big of tires it can handle, probably leaning towards 33", but debating 35". I've got all the engine parts in boxes, I need to pull them out and inventory and get some input. I'm pretty sure there is a nice set of headers and an aftermarket Carb.
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