225 or 318

[66Vali]

So I have the oppurtunity to get a 318 for free....I currently have the 225 slant 6....I am totally new to the whole build part of this...I am learning as I go....I have never done engine stuff before, but if you don't ever do it, you'll never learn...Now my questions

1.How hard is it to swap them out???

2.What other parts are needed to put this in my car??

Any other info or directions to something would be great!!!!

Thanks guys!!!

 

[OldmanRick]

Most parts for the swap are readily available. Biggest expense may be that you need a V8 bellhousing trans.

 

[dustoff440]

If you can't get the entire motor and tranny with all the brackets, pullies, accesories, distributor, carb, kickdown linkage etc. etc, you will be doing a lot of scrounging for parts

radiator unless an ac /6 rad will be too small especially if you juice the motor up

motor mounts different

exhaust different

tranny bell different housing need a v8 9o4 with correct flexplate and converter to avoid balance issues

If you really wanted to do this I would look for a complete car that the body is crapped out on but stilll has a complete running drive train, you will probably spend less than the free motor that you still have to scrounge up parts for

 

[67Dart273]

There's quite a bit of stuff to change, and it depends on the year of the car and the year of the engine, which you didn't post.

You need to be careful WHAT SORT of 318 you got, as there are at least 3 separate engines.

The old "polyshpere 318, so called "Poly" and incorrectly but widely (pun intended) called "wide block," which were never actually used in A bodies

The LA 318, modeled after the 273, with parts interchange between that and the 340/ 360 to some degree

AND the later magnum engines, which used different heads, intake, and oiling changes, and roller lifters, and while they can be swapped in similar to an LA, it's important to research the parts interchange.

If you have a stick (3/4 speed) you'll need a different bell, flywheel, and clutch. If you have an auto, you'll need a transmission which fits the small block bell. This can be either a 904 or the larger 727, but the 727 will require a different driveshaft, or shorten yours

Depending on the year of your car body, the transmission can be an issue. Is yours old enough to be a push button? Rear fllange type driveshaft? So what year is it?

And be careful of the transmission you buy (torque converter) as the early autos for the 273's had a smaller converter register, or if you find a later 360 trans, you'll have to knock the balance weights off the converter, or replace same. Also watch for "lockup" transmissions

You'll either need a V8 crossmember or special aftermarket mounts made by places like Schumaker to fit the V8 to the /6 crossmember.

Depending, early V8's had the bottom radiator fitting on the opposite side of 69? later cars, and the newer pump is a little longer. Your radiator may or may not be large enough.

Of course you'll need proper exhaust manifolds, many off the other car/ truck bodies won't work, or you'll need headers.

S' all I can think of for now.

 

[pishta]

Keep the six. Use the 318 swap money to turbocharge it. At least stock 318 performance with 225 gas mileage, and more torque than both, and more attention at cruise night.

 

[moper]

There's quite a bit of stuff to change, and it depends on the year of the car and the year of the engine, which you didn't post.

You need to be careful WHAT SORT of 318 you got, as there are at least 3 separate engines.

The old "polyshpere 318, so called "Poly" and incorrectly but widely (pun intended) called "wide block," which were never actually used in A bodies

The LA 318, modeled after the 273, with parts interchange between that and the 340/ 360 to some degree

AND the later magnum engines, which used different heads, intake, and oiling changes, and roller lifters, and while they can be swapped in similar to an LA, it's important to research the parts interchange.

If you have a stick (3/4 speed) you'll need a different bell, flywheel, and clutch. If you have an auto, you'll need a transmission which fits the small block bell. This can be either a 904 or the larger 727, but the 727 will require a different driveshaft, or shorten yours

Depending on the year of your car body, the transmission can be an issue. Is yours old enough to be a push button? Rear fllange type driveshaft? So what year is it?

And be careful of the transmission you buy (torque converter) as the early autos for the 273's had a smaller converter register, or if you find a later 360 trans, you'll have to knock the balance weights off the converter, or replace same. Also watch for "lockup" transmissions

You'll either need a V8 crossmember or special aftermarket mounts made by places like Schumaker to fit the V8 to the /6 crossmember.

Depending, early V8's had the bottom radiator fitting on the opposite side of 69? later cars, and the newer pump is a little longer. Your radiator may or may not be large enough.

Of course you'll need proper exhaust manifolds, many off the other car/ truck bodies won't work, or you'll need headers.

S' all I can think of for now.

pretty sure you got most of it..lol.
I parted V8 car for my '65 because you also need the acelerator pedal (different for V8s) and the kickdown (special to early As). As a '66 model, you shoul be fine with the later transmissions. '65 is one year only, 64 and down are the same as far as I know.

 

[Keith Mopar]

Also a V8 sterring link. K members are the same for /6 and V8, just a motor mount change on early A's.

Actually it's not a hard swap it's rounding up the parts for the swap, but everyone on here can help with some parts wanted adds.

 

[273]

318 with mild cam 256 or 262 and a 4bbl intake like the performer and duals