Crankshaft and Rod bearings for cast crank?

[SpriceyStuff]

Hey guys. I’m shopping for my 77 slant I want to build, but I’m having trouble finding the parts I need. Particularly bearings. My main issue is that the only listing I’ve found that explicitly states that the bearings are for a cast crank only gives me options for an undersized crank, which I don’t have, nor do I particularly plan on having. Everything else either states that it’s for a forged crank, or doesn’t say anything at all and that makes me very nervous. I’ve tried looking up the part numbers but to no avail. Can you guys help me find a set of main and rod bearings for my cast crank slant?

 

[volaredon]

I scout eBay all the time, and see more cast crank parts there than forged

 

[RustyRatRod]

You will want to cross reference these numbers in a book, before you purchase.

Rod bearings:
(6) Federal Mogul 3695RA Connecting Rod Bearings Standard For 1976-87 Dodge 225 | eBay

Main bearings:
TRW MS3419AL Main Bearings - Standard For 1977-1987 Chrysler 225 3.7L SLANT-SIX | eBay

 

[Charrlie_S]

Rock auto has some. Mostley under size, but some std. Look up 1980 dodge d-150

 

[SpriceyStuff]

You will want to cross reference these numbers in a book, before you purchase.

Rod bearings:
(6) Federal Mogul 3695RA Connecting Rod Bearings Standard For 1976-87 Dodge 225 | eBay

Main bearings:
TRW MS3419AL Main Bearings - Standard For 1977-1987 Chrysler 225 3.7L SLANT-SIX | eBay

Hey thanks! That’s super helpful. For some reason those didn’t come up in my searches.

 

[SpriceyStuff]

Rock auto has some. Mostley under size, but some std. Look up 1980 dodge d-150

Thanks! That helped me find some on there, as opposed to looking under 74 dart for parts for a 77 engine lol

 

[Bewy]

Do not know why the brgs would be different for cast vs forged, unless the dimensions are different. If the theory works, the brgs never contact the crank because of the oil film.

 

[volaredon]

Cast crank journals are narrower than forged crank ones

 

[RustyRatRod]

Do not know why the brgs would be different for cast vs forged, unless the dimensions are different. If the theory works, the brgs never contact the crank because of the oil film.

They're different because Chrysler made them that way. Cast and forged crank blocks are also different and cannot interchange. Connecting rods different as well.

 

[RustyRatRod]

Thanks! That helped me find some on there, as opposed to looking under 74 dart for parts for a 77 engine lol

Why on Earth would you have been doing that? That makes zero sense. You should have been looking up for a 77 Aspen or Volare. I mean really. We gotta do it all for ya? lol

 

[SpriceyStuff]

Why on Earth would you have been doing that? That makes zero sense. You should have been looking up for a 77 Aspen or Volare. I mean really. We gotta do it all for ya? lol

Sometimes I’m not all there lol. You guys know if the cam journals are the same in the newer blocks? I have a new set of cam bearings laying around I bought for the old block and if I don’t have to buy more I’d like not to