my 1st 340....yea

[66fs]

both set of pistons are cast ...so staying with cast ...and i guess no need to source a flywheel before i send the crank out for balancing
these are the rods both free floating

I'm building mine with + .020 NOS cast 72 pistons and 2.02 "J" heads, same casting numbers as yours.

 

[nutz]

Timing cover is wrong, see post #8. I'm building a 69/70 340 myself. Rods should be bronze bushed on the small end forging # 2899496 or 3418645. Only 360's and cast crank 340's are externally balanced. 273's, 318's and forged crank 340's are all internally balanced. No need to spend a lot on a 340, they came with all the good stuff. What are the casting # are on the heads? Any 340 forged crank should be good, just go to the next size bearings till it cleans up, if needed. Magneflux the crank, heads, and block before putting any money into them.

crank was done ,gave me paper work but once i get pistons i'll have it checked
any brand better then others ,and do i use chrome rings ? i know it needs to be honed for the rings i buy

 

[nutz]

I'm building mine with + .020 NOS cast 72 pistons and 2.02 "J" heads, same casting numbers as yours.

guy said its at 020 now one cylinder is pitted so hope 030 will clean it up

 

[nutz]

I'm doing one right now. Open wallet WIDE and empty it out. Then go to the bank and get some more money.

lucky me i can run it threw my business

 

[4spdragtop]

That timing cover you have appears to be have the crank seal installed from outside. So i would say it's from the 80's. That makes it WAY easier to change seal if need be. Otherwise the timing cover has to be removed to change the seal.
For 69 covers the timing marks are on pass side. If you decide to you want 69 I have one listed for sale.
Congrats on the 340! You will have fun.

 

[nutz]

lucky me i can run it threw my business

this is the stuff i normally do audi v-8s ,i just like to sit and scratch my head wtf were they thinking

 

[nutz]

That timing cover you have appears to be have the crank seal installed from outside. So i would say it's from the 80's. That makes it WAY easier to change seal if need be. Otherwise the timing cover has to be removed to change the seal.
For 69 covers the timing marks are on pass side. If you decide to you want 69 I have one listed for sale.
Congrats on the 340! You will have fun.

yea black paint made me think newer

 

[CFD244]

ok so need to find older cover (any 69 or older ?)

Here's one now.....
[FOR SALE] - 68/9 Small block timing cover

 

[CFD244]

Heads are 915 which started in 70 but would have a J by the spark plugs... Those have O by the plug which probably is 72-73.. Should have 1.88 valves...

There were all kinds of letters associated with 915's some 2.02 and some 1.88

 

[Professor Fate]

this is the stuff i normally do audi v-8s ,i just like to sit and scratch my head wtf were they thinking

View attachment 1716358413

View attachment 1716358414

You, my good man, are a real glutton for punishment. Egads.

 

[CFD244]

both set of pistons are cast ...so staying with cast ...and i guess no need to source a flywheel before i send the crank out for balancing
these are the rods both free floating

View attachment 1716358410

View attachment 1716358411

View attachment 1716358412

Crank doesn't need to be balanced if you are reconditioning your rods and using OEM replacement pistons.

 

[nutz]

You, my good man, are a real glutton for punishment. Egads.

yeah but it does pay for my toys

 

[CFD244]

this is the stuff i normally do audi v-8s ,i just like to sit and scratch my head wtf were they thinking

View attachment 1716358413

View attachment 1716358414

 

[Dart Frog]

I would take the rods and crank to a reputable machine shop ask them to magnaflux and check for straightness. The heads are O's and sure look like 202's to me. I would always put new valve springs on unless I know for a fact that they are new and up to the spec. At that time you can check the valve guides to make sure you don't have any slop in them . It's going to be a process so don't get in any Rush ask a lot of questions and read some good books. Building a small block Mopar is a good one it's older but still has a lot of good info in it. Especially for a hot stock rebuild.
.

 

[pauly]

this is the stuff i normally do audi v-8s ,i just like to sit and scratch my head wtf were they thinking

View attachment 1716358413

View attachment 1716358414

I don’t have anxiety issues but these pictures give me anxiety!!

 

[nutz]

I would take the rods and crank to a reputable machine shop ask them to magnaflux and check for straightness. The heads are O's and sure look like 202's to me. I would always put new valve springs on unless I know for a fact that they are new and up to the spec. At that time you can check the valve guides to make sure you don't have any slop in them . It's going to be a process so don't get in any Rush ask a lot of questions and read some good books. Building a small block Mopar is a good one it's older but still has a lot of good info in it. Especially for a hot stock rebuild.
.

my mechinist is good dropping the block and heads off tomorrow ...have at least 2 years before i'm ready for the swap so just gathering parts (and info)still

 

[nutz]

I don’t have anxiety issues but these pictures give me anxiety!!

the first couple did ,the chain job is a 04to 09 s4 engine done at least a dozen
the nose off is a 13 s8 drop engine to replace the intake manifolds ...thats a job second pick
ill post a pick of my 13 a8 before i fixed it for the prior owner all the stuff hanging out of the front most was the headlight

 

[Dart Frog]

the first couple did ,the chain job is a 04to 09 s4 engine done at least a dozen
the nose off is a 13 s8 drop engine to replace the intake manifolds ...thats a job
ill post a pick of my 13 a8 before i fixed it for the prior owner all the stuff hanging out of the from most was the headlight

View attachment 1716358457

View attachment 1716358463

To me that kind of looks like a cross between a refrigerator and a time machine

 

[RustyRatRod]

That is not true. They were cast pistons.

Yeah. Every single 340 had cast pistons that I'm aware of.

 

[nutz]

when i first saw it
i was wtf is all the electronics hanging out of the bumper .....headlight
guy didn't have collision cost him 14k to fix it ,two year later dealer told him it needed 9 to pull the engine and clean the valves ,i got it for 4k worth of work on his wives car
put 4k of time and $$ into it ....drove it for8 months sold it10k i hate the tan interior and too fast for the wife

 

[RustyRatRod]

You, my good man, are a real glutton for punishment. Egads.

Truer words have never been spoken.

 

[S'cuder]

going to run points (were they dual point)

Yes, the 4-speed 340s were dual point in 1969. The automatics went to single points that year (I think!)

 

[nutz]

one of are boyz is hooking me up there

 

[1WildRT]

There were all kinds of letters associated with 915's some 2.02 and some 1.88

I'm well aware there are J/C/U 915's out there.. Been playing with Mopars for at least a couple years.... Ok more like over 50 years..... I've seen mostly J's on 70 340's including T/A AAR motors.... The ones nutz has are C or O but they do have 2.02 valves....

 

[pink340swinger]

Can you please post a clear picture of the casting date and vin numbers stamped on the passenger side of the oil pan rail just below the casting date?