J heads on a 76 318?

[shadango]

Well, a neighbor into E bodies came up and was checking out my project car ...72 Barracuda.

I was told it had a 74 318 in it.....Well, my neighbor ID'd the heads as "J" heads  (He pointed out the "J" on them) and said he thought I might actually have a 360......so , now that he got my curiosity going I crawled under and checked out the casting numbers.

On the drivers side, ---   4006730-318-15
On the right side ----     D        N<----       4  -  28   - 76

So its a 76 block, 318.....with J heads.

I have already installed an ECU for a 72-74  318 and a new 72 wiring harness.

SO, the questions are endless now.....but to start

----  Will the 72-74 ECU I have now work OK?

----  Will the J heads mean anything in my application?

----  Tranny wise, can I still use a 727 or 904 from a 72-74 Barracuda?

I looked up the ECU for the 76 engine (in a duster) and its a different part number.....

Please tell me this is gonna be ok....

 

[torredcuda]

What is the casting number?J heads may be slightly better than newer heads bet really not much difference.Tranny is fine but make sure you have the right balance converter.

[shadango]

Thats the key, I know....what convertor to go with...

Thing is, aside from tearing the engine down to see whats inside, I am going by what the seller tells me .....

According to him, it was a stcok motor inside and a 74....well I know its a 76 now.....with J heads....so now I am really up in the air as far as what convertor to use.

[Chryco Psycho]

you can use either the 904 or 727 , you want a neutral balanced converter for it , all 318 were neutral balance
The ECU Will work just fine

[shadango]

I heard from the seller that I bought my car from (he owes me a tranny, crossmember and shaft)......He has my tranny, a 727 with a converter....I assume it to be  a stock setup......I think he said it came from a 73.....

Figured I would go with this for now and cross my fingers.....also thinking about taking the tranny (once I get it) somewhere to have it gone over....

[Chryco Psycho]

makes sense to me