original parts

[1 Wild R/T]

  my numbers matching WSS340 engine ,I was going to use the block for my 408 build but I'm probably going to use a 360 block and just store this engine in the garage

I'm a professional race engine builder so a stock 340 is not going to cut-it for a heavy challenger . the goal is 500hp on pump gas ....good luck everyone with those projects

Did 1970 WSS 340 engines come with the smaller 1.88 intake valves ?   
   Was your WSS Challenger a very late production car ? Was the engine ever opened ?

Why would being a WSS have any effect on that?

Because I'm looking at pic of a numbers matching 1970 340 from a WSS challenger with J heads. ( see earlier post ).
And is why i asked the other two questions.

Very few if any 70 340's  were originally equipped with X heads....  J heads with 2.02 valves are the norm....  68 & 69 got X heads....

[RUNCHARGER]

The J-heads on a 340 in 70-71 were supposed to have 2.02 valves.

[GY3R/T]

 Does anyone have a pic of J head with a 69 cast date ?

[WSS340]

  when I get back to my garage i'll check my original heads

[GY3R/T]

when I get back to my garage i'll check my original heads

And Maybe the first four numbers of the vin sequence ?

[WSS340]

  whats that going to tell you ?

[Morty426]

whats that going to tell you ?

Absolutely nothing!

There is no way to know if the heads are original to the motor. 

Also Chrysler had no concept of first in and first out.  You could have two heads with drastically different dates on them.  Hell you could have a J head on one side and an X on the other

[GY3R/T]

  VIN sequence numbers and SPD will give an approximate time of assembly. I guess i could've asked for SPD. There is a way to tell if certain parts are not original to an engine. Simply if casting dates are later than assembly dates.

[Morty426]

  VIN sequence numbers and SPD will give an approximate time of assembly. I guess i could've asked for SPD. There is a way to tell if certain parts are not original to an engine. Simply if casting dates are later than assembly dates.

You should ask for the engine assembly date which is on the front of the block. 

However once again there was no first in first out so the casting dates of the heads can be anywhere

[GY3R/T]

  VIN sequence numbers and SPD will give an approximate time of assembly. I guess i could've asked for SPD. There is a way to tell if certain parts are not original to an engine. Simply if casting dates are later than assembly dates.

You should ask for the engine assembly date which is on the front of the block. 

However once again there was no first in first out so the casting dates of the heads can be anywhere
   There was another reason why i asked for first part of VIN sequence numbers. Didn't ask for all six numbers out of respect to the owners privacy.
   FIFO does not apply if casting dates are after the (varified) assembly date of the car or stamped assembly date on the " numbers matching " engine.  A cylinder head cast on 07-06-0 cannot be original to an engine assm on 05-05-0, because that head did not exist at the time of assm. Castings before 05-05-0 can be anywhere as you said and mixed matched X,O,Z and J. I'm just curious of the history and originality of this rare car.

[GY3R/T]

   I don't why my post didn't seperate from Morty426. 
My responce starts with 'There was another reason....."

[anlauto]

   I don't why my post didn't seperate from Morty426. 
My responce starts with 'There was another reason....."

@GY3R/T  When you "Quote" somebody, you have to watch you don't start typing before the "[/quote]" which is sometimes hiding off screen.... If you press "modify" you'll see where it is in your post. ....

That's why your answer is not separate.

[GY3R/T]

  Got it.   

[Morty426]

   I don't why my post didn't seperate from Morty426. 
My responce starts with 'There was another reason....."

I could read and felt this is where you were going anyway

A friend of mine once owned a TX9 70 Hemi GTX.  Original motor.  When we pulled the motor to have the car restored it turned out the passenger head was dated 66, the drivers 69. 

So at sometime in it's life it looked like one head failed and was replaced.  The look of the motor lead us to believe it was replaced rather than built that way. 

[1 Wild R/T]

   I don't why my post didn't seperate from Morty426. 
My responce starts with 'There was another reason....."

I could read and felt this is where you were going anyway

A friend of mine once owned a TX9 70 Hemi GTX.  Original motor.  When we pulled the motor to have the car restored it turned out the passenger head was dated 66, the drivers 69. 

Marlin? Or the man before Marlin?   

So at sometime in it's life it looked like one head failed and was replaced.  The look of the motor lead us to believe it was replaced rather than built that way.