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T/A heads are specific to T/A blocks which came in RT Challengers and AAR Cudas these are six pack motors the push rod holes are in a different location and the rocker assembly matched the hole configuration. You should post some pictures of them for proper I.D. This are of value to a guy...

After 17 years I would be dumping some dextron 2 down the spark plug holes or some kind of automatic transmission fluid, it is high in detergent and will also seep in and around the rings and bearings etc. It would not hurt to dump a quart in the engine as well for your initial start up. Again...

My understanding was that some 318 truck engines had better crankshafts, forged instead of cast and were desired for use in building hi proformance engines.

This is true for the 273 but not the 318s.

clearaty please, is it just the manifold and linkage if so 350 - 500 complete original T/A intake with linkage and 3 carbs , I see people asking 1500.00 which is only 500 shy of buying it all new. (over priced)Carbs new are 500 each , intake replacement nos 350.00 - 450.00 Cheers I am sure...

so which blocks can be bored to take standard 340 pistons , just curious as I have a 68 - 318 also a 69 - 318 and a 77-4 speed truck with a 318 in it. that would be 0.13 boreing job guess if the walls are thick enough why not.

Enlighten me please - what is core shift ?

as far as I know all X blocks were 318s and had to be bored to 340. so geting a X block with 340 stamped on it would not happen. But I do not know everything . LOL. Just what I read, and that is not always correct.

I have an 2002 dodge ram 1500 with a 4.7 in it , I have had to do the brakes, the front axles and splines , wheel bearings, replaced the leaf springs , the a/c compressor. Seems like the only thing I have not had to touch is my sweet little 4.7 and I do run her hard. Lol . My kid loves it ...

Sorry 1000 bucks for T/A heads ????? A have a T/A block and I would never pay that for heads. I will be buying new ones.

Thanks , it does have the bigger ports actually quite a bit bigger then the dominator ports. made my day got both for inexspensive.

I went to see a guy today to buy an eddy LD340 intake when I got there it turned out to be an eddy LD-4b instead. Is there a big difference between LD340 and LD 4b? I also bought his holley street dominater 318 intake, figure I might use it on a 273 motor I am putting together. Thanks in...

1968 barracuda convertible 318

Your welcome , I have had this book since 1980 or somewhere around then , a friend of mine gave it to me , he had just finished building an old signet and I was building a 68 notchback at the time. I still remember when he put it in my hands he said "read this whole book Wheels and you will be...

hope this helps a bit. Cheers

I have 67 fast back barracuda , comando car, came stock with a 273 comando 4 barrel h.p. engine but I dont remember the horse power rating I think they were rated at 200-215 horse. I am pretty sure the 340 was rated at 275 -290 horse but would have to start looking at my books again. I'm in the...

Thanks , I did not know that even existed. Very cool , I like learning new stuff. Again thanks.

Hi Crackedback, just wondering what or how you decoded the build date and unit number? do you have a chart or sheet you could post or would be willing to share? Thanks either way. Wheels.

There are basiclly 2 different cylinder heads that have been used on production "A" engines from 1964-1990. A small port 273/318 head and a big port 340/360 head. There have been only 3 different valve configurations for these. 273/318 with 1.78" intake and 1.50" exhaust, one for the 1968-1971...

I have a couple of 360s one running one not , I would be happy to trade them straight across for any bodies 340s and then you can build your self a nice 360 stroker. yah whoo.

there should be casting numbers ,they are often hard to see as the rocker assembly covers them you may need a flashlight. There is also letter codes located on the outside of the heads by the spark plug holes a U or J or if your lucky an X x heads will have the big valves 2.02 and some J heads...

Yes sir ree, my direct connection books must be wrong. Because, well you know, dont believe everything you read. Cheers : )

Here are casting numbers and the years they were used and even what engine they came on . Right out of my mopar engine bible. Click on the pdf file.

casting # 3418915 used on 1970 - 340 6Bbl T/A also on 1971 - 360 also on 1972 - 340/360 1973 used different casting numbers , you may have lucked out and got pre 72 heads - the good ones with 2.02 intakes , I suggest that you measure them , either way they are good heads with good sized ports...

hope this worked , guys I have attached a pdf file . It is a page from my mopar engine bible . Read the whole page but pay attention to the fourth paragraph. 340/360 heads . Cheers.

there seems to be a lot of confusion about heads here . these are casting number for 340 / 360 heads That are the same heads. " J " as far as I know are the same as "x" just different casting numbers. 68 to 71 340 - casting # 2531894 1970 340 6 Bbl. T/A casting #3418915 1971 360 casting...