Looks like this in my 47 CJ2A. A tricky swap but not too nasty.The engine is rebuilt,all stock but the Mopar Slant 6 carb and home made header.I bet the Jeep is about 100 pounds lighter than with the 134 flathead....80 HP is plenty adequate for a 2100 pound 4x4 with 5.38 gears.
And I managed to massage a 151 S10 rear sump pan to fit the 153.

Man, that looks real good. Nice detail and looks factory to boot.

Is that your pan on the HAMB or are there two 153s with 151 pans in New York? It looks good and I agree about the power. CJs should be fun. A guy I knew here turned himself into a 7 year old with no short term memory in a CJ with a 460 in it. The last thing he said to me when he recognized me was, " It's a good thing I know how to drive these things, some kid would kill himself." He lasted one more day.

Yes on the HAMB. I see all the Duggan stuff too.Old Jeeps have quick steering,they are narrow an 80 inch wheelbase with a high CG.Fun to drive and dangerous enough with a 4 cylinder.

Looks like it was born there. Very nice work!

Tony P, Thanks for posting that pan info. I sill haven't taken time to check that for myself. I do have a 151 with a rear sump pan that came from a YJ. I also want to look into a hybrid using the bottom of a SBC. Even my old Blazer is a squirrel with it's short wheel base and high center of gravity. Have fun with your CJ and send more pictures. Would you post some pan pictures on our Chevy 4 thread here? Do you have header pictures? Thanks.

Here's what I did to make S10 151 rear sump pan fit a 153.The rear cutout for the main was too large to fit a 2 piece rear main seal 153.Reduced diameter with sheet metal and braze.The S10 pan held three quarts on the 153 if I wanted the oil level a few inches below the crank throws.more sheet metal, braze, add about a quart.The side and front pan rails fit ok,some bolt holes needed a slight file egging to get the bolts lined up.And the area directly over the oil pump got a little hammer massaging so the pan didn't touch the pump.A Chevy 250 pump pick up reworked to fit my engine.153 pan gasket side rails and RTV sealant only on the front and rear.The two front bolts fastening the pan to the timing cover were omitted like on the 151.
The pan is solid hillbilly job that doesn't leak.
The header was another fabrication done without much concern for a fine finish. 230-292 header flange, left over bends from a Chevy V8 header kit. And my MIG welder was causing issue,so some of it was gas welded.....It works...

Great, Thanks. Function over form every time. It doesn't matter how good it looks if it doesn't work. All in all it's a clean swap. Thanks for the pictures.

I like the Romex radiator hose support.

What trans is in the Jeep? T90 with an adapter? Have you driven it Yet?
Ron

Yes,Novak Conversions 2-5/8 thick adapter with stock T90/D18. The thicker adapter requires the longer clutch shaft from a T90c.This way requires no firewall chopping.
The radiator is a Ebay two row aluminum 100 buck Scion model.The water pump is much lower on the 153...Probably have to use an electric fan to replace the chopped down plastic mechanical fan when summer is here.
Yeah the Romex on the hose to keep it from kinking.....
It drives nicely down the road,the 153 sounds a lot less stressed that the stock engine at 3500 rpm,about 55 mph.

In the snow last week doing what old Jeeps do...
short sound video

3500 would make me uncomfortable. Do you drive it like that a lot? If not it's fine but I'd be looking for a OD. Maybe a T5 from a newer Jeep?

The easiest solution is a Warn type OD that bolts to the PTO port on the existing transfer case.About 800 -1000 bucks.Any other transmission is a major drive line reconstruction
3500 rpm isn't that severe in my opinion considering it's just for 15 minutes or so. And in boat use the 153 engines are run at 3500 rpm and high load with no problems.It's not like this engine needs to last 100,000 miles at my age

[quote=Tony It's not like this engine needs to last 100,000 miles at my age [/quote]

Ah, someone else who can see the tunnel at the end of the light. Good idea lets blow up everything we've built before we go. No one else would appreciate them anyway. They are just sitting around with a pile of V8s waiting for us to go.