Replacing ‘67 273 with a ‘78 318 questions

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Bobacuda

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My ‘67 Barracuda convertible, Formula S, 273, PS, PB, automatic had its engine wiped out before I got it. The PO installed a ‘68 318 and did a lot of questionable mechanical, electrical and body work. I am in the process of rebuilding the car and undoing hooptie quality work. Which brings up all sorts of stuff I have never dealt with.

These are the motor mounts that held the current engine, with no two bolts being the same. Are they correct for this use and do I buy new mounts for a 273 or a 318?
 
The one on the left was DS, the one on the right was PS. The PO drilled two extra holes in the mount, then attached the insulator to a factory hole, at an angle.

Anyone have photos of what they should look like?
 
Here's photos of a 67 273 engine... The bolt heads should be toward the front of the engine, then slide the mount on from the rear and install the washers and nuts... Not all of them in the pictures have the bolts installed in the proper orientation... The bolts should be 3/8 fine thread...

Driver's side:

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Passenger's side....

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Does it still have the original trans, and if so do you have an annular ring for the snout of the torque converter? If not it will just Waller out the front pump of the trans but quick.
 
I’ll have to remove a couple of acres of New Mexico and oil from the trans to find out what year the 904 is. I suspect it came from the junkyard with the 318. How can I tell if it needs a annular ring? BTW, what does one look like - I’ve never heard of it.
 
I’ll have to remove a couple of acres of New Mexico and oil from the trans to find out what year the 904 is. I suspect it came from the junkyard with the 318. How can I tell if it needs a annular ring? BTW, what does one look like - I’ve never heard of it.

Scrape off the New Mexico from the trans on the driver's side above the pan and below the linkages there should be some numbers stamped on the flat pad there... take a picture of those numbers and post them and they can be looked up to see what year the trans is....
 
I’ll have to remove a couple of acres of New Mexico and oil from the trans to find out what year the 904 is. I suspect it came from the junkyard with the 318. How can I tell if it needs a annular ring? BTW, what does one look like - I’ve never heard of it.
The snout on the TC is smaller diameter for '67 and earlier, than for thr '68 and later TC snout. So if that early TC was used, then a thin ring would be installed inside the larger, later registration hole in the back of the crank to fill in the gap in the diameters.
 
So, measure the inside of the hole at the end of the crank on both engines, then measure the snout of the current TC. In a perfect world, the holes should be the same and the TC snout should measure close to the hole diameters, correct?
 
So, measure the inside of the hole at the end of the crank on both engines, then measure the snout of the current TC. In a perfect world, the holes should be the same and the TC snout should measure close to the hole diameters, correct?
correct!!
 
The snout on the TC is smaller diameter for '67 and earlier, than for thr '68 and later TC snout. So if that early TC was used, then a thin ring would be installed inside the larger, later registration hole in the back of the crank to fill in the gap in the diameters.

Adapter/bushing looks like this...T-Flyte Patty use to sell them, but he's out of business now...
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...and if the new engine has a cast crank, you'll need a B+M weighted flexplate to use with the old trans.
 
Boba; There is a lot of confusion about Mopar torque converters. I'm not sure about Magnums, but all 318's and all 273's are neutral balance, cast or forged crank. --------- All 360's and cast crank 340's are externally balanced. The weighted flexplate mentioned above is for mounting a 318/273 [neutral] converter to a 360 engine.

65Val >> '' Average Length Member'' ……………. Please do not send photos !!!!!
Thanks for the pic of the TC bushing.
 
Adapter/bushing looks like this...T-Flyte Patty use to sell them, but he's out of business now...
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...and if the new engine has a cast crank, you'll need a B+M weighted flexplate to use with the old trans.
FWIW..... All 318's are cast cranks (except for some of the early forged truck cranks) and all 318's are internally balanced. So no external balanced flexplate or TC for any 318.

Good pic of the ring! Tnx.
 
FWIW..... All 318's are cast cranks (except for some of the early forged truck cranks) and all 318's are internally balanced. So no external balanced flexplate or TC for any 318.

Good pic of the ring! Tnx.
Cool...I stand corrected on the 318's. I thought late 60's 318's had forged (same as 273's), and went cast in the early 70's along with the rest of the engines?
 
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IKrazyKuda - got to work on the mechanicals today. Took a couple of photos to get all the numbers.

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Bolted to a ‘68 318 in a ‘67 Barracuda. Goes right along with the bodywork - rather than bolt the nosepiece to the fenders (factory), the PO welded the passenger side together. And I really wish he had bought some wires with more colors than yellow and green. So much to work through.
 
If you need an adapter bushing for the transmission to crank, @charliec is still selling them. I bought one from him a couple weeks ago.
 
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