Technical What Mopar engine is this ?? Question

I am trying to figure out which mopar V8 this is , has odd bolt pattern on exhaust manifolds , 8 bolt flywheel , offset water pump . Owner does not know.

 

that's the industrial version of the big block, used in some motorhomes, etc.

look on the sides of the block for a big cast number like 413-3 or something, that will tell you what it is. On the other side will be a cast date, too. Although the numbers might be hiding behind heat sheilds

 

Yup, motor home type with non-pass car heads. Could also be a 440.

 

I would guess 440 because of the color, etc. But you never know till you read the numbers

 

Not motor home given it's a stick.

 

Medium duty truck.

probably more 361s than 413s out there. Don’t think there were any 440s in medium trucks. 413 would be raised deck, 361 std low deck.

 

Great response ,thank you so much

 

Regardless of what it came out of that exhaust manifold looks really cool and probably is pretty efficient.

 

Looks like a b motor. RB has the pad on the drivers side by the front of the intake.

 

Most likely it will be either a 361 or 413. And if you're thinking of using it in a car project, keep in mind that the 8 bolt crank in these truck motors will not work. The rear flange sticks out of the block farther than a passenger car crankshaft

 

Had that same issue with a Dodge L6. Good thing for him though is it should work correctly if he stays with a manual trans.
I used the industrial engines flywheel on my 6 and could see the offset between it and the passenger flywheel quickly. I had a passenger car engine, but crank was fubar, so had the industrial crank turned.
Not sure what would be needed for an auto transmission though.

 

Most wedge motors had a 6 bolt crank.....Interesting this has an 8 bolt crank....

 

If it's an 8 bolt crank with a register ring it's good. If it's an 8 bolt flat flange, not so much without some machine work. Gene.

 

It's not an engine that you'd want to put in a car.....if that's where the original question was leading....

 

Actually, if it is a flat faced flange then the folks working on pre-62 Chryslers would be buyers.
Remember that all pre-62 cranks (except slant 6) were this way as the converter bolted directly to the crank.

And yes, the color would seem to indicate late B-RB production so likely 440 medium truck. Need casting numbers or stamped ID code.

 

8 bolt flange are forged not cast. They balance differently. The distance from the rear of the block to flange is the same as a 392. To the best of my knowledge, all of those cranks are 3.75 stroke. The 413 industrial versions were where I ran across those cranks. I used to run those in my alky dragster in the early 80's. The industrial heads have a water jacket above the exhaust ports so the valve cover gaskets don't get fried as quickly.

 

It’s a low deck,,,,,,the valley gasket rail goes almost to the edge of the intake flange .
It has angle plug heads,,,,,it’s almost certain to be an industrial application,,,,,,to be able to service the engine better .
Probably an old industrial,,,,,a lot of forklifts used these engines back then .
Although,,,I’m not sure if forklift’s used a stick transmission ,,,,,,but it’s bound to be an industrial,,,,since the 8 bolt flange .

Also,,,,the heavy duty bell with engine mounting bosses .
And,,,the military used a lot of Chrysler stuff back in the day .

Tommy

 

the most recent place I've seen industrial big block mopar engines is in old ramp trucks



(yeah, I've seen this one in real life)

 

If you wanted to use it with a 4 speed or the newer 727 tranny you could swap the crank for a newer one. I did it on a 1959 RB 383 to use a 4 speed behind it.

 

Jim ,

That’s about as industrial as it gets,,,,,,,D700 .
Chrysler was known for adding strength and durability to its heavy haulers .
Looks like someone is going through that one ,,,,,,,it should make a great hauler .

Tommy