Looks like you got lucky . I’d suspect that engines been rebuilt at some point as I doubt they stamp those numbers on at the factory , crank bearings and bores look like new . the pitting on the cam means it’s scrap and the lifters will need doing too. May as well put a fast road cam in for a bit more power, don’t mix up your bearings ect or get the caps in the wrong order/ backwards 👍 Circles are just marks from small soft metal debris/ contaminants , nothing to really worry about
@@jamesbarran-scott437 i nkticed those stampings. I cant remember if my other 360 had them or not but the age diff between them is also 26 years too. Ill ask on the amc forums. But yea the stampings had me wondering because i dont remember if amc did that or not As for the bearings looking new. My 360 in my 90 grand wagoneer when i took the pan off and inspected the bearings. They too looked brand new. So it might just be they have little to no wear and thats it.
@@jeepsblackpowderandlights4305 valve springs should be fine even with a slightly upgraded cam I’d expect, pushrods I’d check the condition- if they’re inexpensive probably just replace them anyway. It maybe that there’s company’s selling complete upgrade kits that with the cam, lifters, pushrods valves ect .
IMCO, you should have just left it alone and ran a little heavier oil. It's just a putt putt truck motor. I have high mile 401 in a J10. On a hot day idling in gear, it has like 2psi oil pressure. It runs fine and doesn't rattle. I drive it all over. Next time I change the oil, I'll go with 20-50 or some such. BTW, cam bearing delamination on 70s engines is pretty common.
@@jackofmanytrades4396 comparing mine to yours though apples and oranges.. you coyld just have a scored oil pump or worn out bearings.. my bearing is tearing itself apart and i had a fuck ton of metal in the pan. Including a handfull of eraser abd pin sized rusted metal chunks.. blocking the pickuptube in the back.. and on the bottom of the pan.. from that rusted out filler neck. Me taking the pan off and cleaning it up is something i wanted to do anyway.. as i wanted repaint it the valve covers, oil pan. dipstick handle.. filler neck and so forth like i did on ny wagoneer 2 years ago. If anything clearing the pickup from those chunks of rust and metal and the pan.. will keep the rod bearings looking like they are and not fuck those up either. As for leaving it alone ?? Leave what alone.. i drained thd oil saw sludge and silver and pulled the pan and bearing caps to look. Now i know what the problem is and i can work on saving to fix it. I dont plan on this being used only as a work truck forever.. i do want to register it.. repaint it make it look nicer once i finish the last bit of rust repairs on it. And have it be a daily like my wagoneer is. Watch my latest video to get an idea on my gane plan for it. Im not lutting 20-50 in it which can nake the issue worse actually. Itll be like honey and its winter soon. Ima stick with 10-40 for now and some rislone zddp or something. You act like i made the problem worse by investigating ? I had 10-30 in it originally
@@jeepsblackpowderandlights4305All I know is that it's very hard to find a decent machinist these days, there are a lot of shit parts on the market, and a lot of shit advice on the interwebz to go with it. So, yeah, hard to believe as it may be, you might actually end up worse off than when you started. I've only been messing with AMC junk since the '80s. Best of luck. I seriously mean that. I love seeing AMCs that haven't been LS'ed. But it's getting harder all the time to keep them that way. Time and technology are marching on relentlessly.
@jackofmanytrades4396 i 100000%%% agree. I told those shops i do know there is a influx or bad quality cams and lifters on the market. and if my lifters and cam is still good (assuming) i do not want them replaced because i fear itll just create way more issues especially if they swap em with crap parts. If i can get away replacing the cam bearing and thats it.. thats all i wanna do. If the cam got wiped out due to the bad cam bearing. Then of course ill have no other choice. But judging how i have no ticks from the engine and the lifters all pumped up at the same time im hoping its still good. Ive delt with shitty parts on cars for over a decade.. they last 6 months while the originals lasted 20 years. I see countless videos and threads online of engine builders and guys who rebuild their engines on their cars, only for the cams to wipe and lifters go bad shortly after from poor quality crap Just what i need is to reolace good parts with shit parts. Thats my biggest worry. And i know amc replacement parts have quality issues. Water pumps. Timing covers and other crap. Im not ls swapping anything. My 5.9 98 grand cherokee is staying 5.9 magnum.. and my J10 and wagoneer will stay amc 360. Honestly. The 360 in this j10 as i said in the video has tons of power enough for me anyway. Now on my 90 Grand Wagoneer. That 360 with 145hp. Is lacking. It did tow my j10 ona flat bed fine though.. total weight was 6400lbs. And i had at least 300lbs in the back. Brush guard. Front rear bumper. Th400 and quadra trac. And my wagoneer weighs 5100lbs. Despite the crappy hp. Its still got decent torque. But going up mountain roads in VA towing it home.. wide open throttle i could only maintain 40mph and no more. So it deff needed more power. Its also very sluggish overall i cant really pass people easily and yea. To where as my 5.9 grand cherokee is like a rocket compared to it. But the J10 i never had that issue. It weighs 800lbs less than the wagoneer and has more power being a 76. So i can understand why people ls swap.. but im not doing that.. everyone and their mother does that and i hate being the guy who has the same crap as everyone else. Its like wrangler owners. Millions of them.. it isnt unique or cool to me. And ill never own one. Lets say i do have to swap an engine.. it wont be an ls ill put a 5.9 magnum in it just to give the ls swaps a middle finger
I just checked and asked. Yes amc stamped thr comnrcting rods and caps. So no it mist likely has not been rebuilt. Especoally with the mount of grime on the engine outside snd on the transnission to engine bolts. It looks original outside to me.. decades worth of grime build up. The newer looking rod bearings is just from them not wearing. My 360 in my wagoneer as i mentioned was like that too it surpised me when i took them off to look
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Looks like you got lucky .
I’d suspect that engines been rebuilt at some point as I doubt they stamp those numbers on at the factory , crank bearings and bores look like new . the pitting on the cam means it’s scrap and the lifters will need doing too.
May as well put a fast road cam in for a bit more power, don’t mix up your bearings ect or get the caps in the wrong order/ backwards 👍
Circles are just marks from small soft metal debris/ contaminants , nothing to really worry about
@@jamesbarran-scott437 i nkticed those stampings. I cant remember if my other 360 had them or not but the age diff between them is also 26 years too. Ill ask on the amc forums. But yea the stampings had me wondering because i dont remember if amc did that or not
As for the bearings looking new. My 360 in my 90 grand wagoneer when i took the pan off and inspected the bearings. They too looked brand new. So it might just be they have little to no wear and thats it.
@@jamesbarran-scott437 if i gatta do the cam and lifters.. do i need to do the valve springs and push rods etc. Or ?
@@jeepsblackpowderandlights4305 valve springs should be fine even with a slightly upgraded cam I’d expect, pushrods I’d check the condition- if they’re inexpensive probably just replace them anyway.
It maybe that there’s company’s selling complete upgrade kits that with the cam, lifters, pushrods valves ect .
AMC did number the rods from the factory.
@@jackofmanytrades4396 well I live and learn 👍
IMCO, you should have just left it alone and ran a little heavier oil. It's just a putt putt truck motor. I have high mile 401 in a J10. On a hot day idling in gear, it has like 2psi oil pressure. It runs fine and doesn't rattle. I drive it all over. Next time I change the oil, I'll go with 20-50 or some such.
BTW, cam bearing delamination on 70s engines is pretty common.
@@jackofmanytrades4396 comparing mine to yours though apples and oranges.. you coyld just have a scored oil pump or worn out bearings.. my bearing is tearing itself apart and i had a fuck ton of metal in the pan. Including a handfull of eraser abd pin sized rusted metal chunks.. blocking the pickuptube in the back.. and on the bottom of the pan.. from that rusted out filler neck.
Me taking the pan off and cleaning it up is something i wanted to do anyway.. as i wanted repaint it the valve covers, oil pan. dipstick handle.. filler neck and so forth like i did on ny wagoneer 2 years ago.
If anything clearing the pickup from those chunks of rust and metal and the pan.. will keep the rod bearings looking like they are and not fuck those up either.
As for leaving it alone ?? Leave what alone.. i drained thd oil saw sludge and silver and pulled the pan and bearing caps to look.
Now i know what the problem is and i can work on saving to fix it. I dont plan on this being used only as a work truck forever.. i do want to register it.. repaint it make it look nicer once i finish the last bit of rust repairs on it. And have it be a daily like my wagoneer is.
Watch my latest video to get an idea on my gane plan for it.
Im not lutting 20-50 in it which can nake the issue worse actually. Itll be like honey and its winter soon. Ima stick with 10-40 for now and some rislone zddp or something.
You act like i made the problem worse by investigating ?
I had 10-30 in it originally
@@jeepsblackpowderandlights4305All I know is that it's very hard to find a decent machinist these days, there are a lot of shit parts on the market, and a lot of shit advice on the interwebz to go with it. So, yeah, hard to believe as it may be, you might actually end up worse off than when you started. I've only been messing with AMC junk since the '80s.
Best of luck. I seriously mean that. I love seeing AMCs that haven't been LS'ed. But it's getting harder all the time to keep them that way. Time and technology are marching on relentlessly.
@jackofmanytrades4396 i 100000%%% agree. I told those shops i do know there is a influx or bad quality cams and lifters on the market. and if my lifters and cam is still good (assuming) i do not want them replaced because i fear itll just create way more issues especially if they swap em with crap parts. If i can get away replacing the cam bearing and thats it.. thats all i wanna do.
If the cam got wiped out due to the bad cam bearing. Then of course ill have no other choice.
But judging how i have no ticks from the engine and the lifters all pumped up at the same time im hoping its still good.
Ive delt with shitty parts on cars for over a decade.. they last 6 months while the originals lasted 20 years.
I see countless videos and threads online of engine builders and guys who rebuild their engines on their cars, only for the cams to wipe and lifters go bad shortly after from poor quality crap
Just what i need is to reolace good parts with shit parts. Thats my biggest worry.
And i know amc replacement parts have quality issues. Water pumps. Timing covers and other crap.
Im not ls swapping anything. My 5.9 98 grand cherokee is staying 5.9 magnum.. and my J10 and wagoneer will stay amc 360.
Honestly. The 360 in this j10 as i said in the video has tons of power enough for me anyway. Now on my 90 Grand Wagoneer. That 360 with 145hp. Is lacking. It did tow my j10 ona flat bed fine though.. total weight was 6400lbs.
And i had at least 300lbs in the back. Brush guard. Front rear bumper. Th400 and quadra trac. And my wagoneer weighs 5100lbs.
Despite the crappy hp. Its still got decent torque. But going up mountain roads in VA towing it home.. wide open throttle i could only maintain 40mph and no more. So it deff needed more power.
Its also very sluggish overall i cant really pass people easily and yea.
To where as my 5.9 grand cherokee is like a rocket compared to it.
But the J10 i never had that issue. It weighs 800lbs less than the wagoneer and has more power being a 76.
So i can understand why people ls swap.. but im not doing that.. everyone and their mother does that and i hate being the guy who has the same crap as everyone else. Its like wrangler owners. Millions of them.. it isnt unique or cool to me. And ill never own one.
Lets say i do have to swap an engine.. it wont be an ls ill put a 5.9 magnum in it just to give the ls swaps a middle finger
Man....maybe just do a top end rebuild, do the cam bearings yourself, while your at it put in a new oil pump and a small cam in her...
@@jjpeters5 thats what ima do.. bottom end looks beautiful to me. Take it out.. degrease and pressure wash it while its together.. then take it apart
I just checked and asked.
Yes amc stamped thr comnrcting rods and caps. So no it mist likely has not been rebuilt. Especoally with the mount of grime on the engine outside snd on the transnission to engine bolts. It looks original outside to me.. decades worth of grime build up.
The newer looking rod bearings is just from them not wearing. My 360 in my wagoneer as i mentioned was like that too it surpised me when i took them off to look