440 Swap into a 318 car

[ThePurple440]

I have a 72 Challenger base which I'm restoring and also putting in a 440, I heard that the subframes are different between the 2 engines and if so i need to start hunting for a 440 subframe. Any help is welcomed!

 

[cuda joe]

they sell tublar k members easer than getting an original

 

[ThePurple440]

they sell tublar k members easer than getting an original

Interesting, where would i go about finding one? is there any specific sites

 

[Katfish]

All V8 k members are the same, except Hemi
440 will bolt in directly, with 440 engine mounts, no changes needed

 

[Rat Rod AL]

I had a 72 challenge 318 that I put a 383 in and don't remember any special modifications.

 

[moparlee]

Post up a WTB for a V8 K-frame (except hemi) and someone here will have one for sale.

 

[ThePurple440]

All V8 k members are the same, except Hemi
440 will bolt in directly, with 440 engine mounts, no changes needed

So i should be good with going from a 318 too a 440?

 

[57fury440]

You do not have to change the K frame. The 440 will bolt right in with the correct mounts for it. The 318 transmission will not bolt to the 440 so you will need a 727 to fit it. You will also need to change the radiator. You can also change the 318 torsion bars for big block ones but with the right shocks you can get away without the switch. I've done a few in the past and it is pretty easy. Good luck.

 

[ThePurple440]

You do not have to change the K frame. The 440 will bolt right in with the correct mounts for it. The 318 transmission will not bolt to the 440 so you will need a 727 to fit it. You will also need to change the radiator. You can also change the 318 torsion bars for big block ones but with the right shocks you can get away without the switch. I've done a few in the past and it is pretty easy. Good luck.

Thanks!

 

[moparleo]

The 440 will need all of its accessories and pulleys etc...If you want to use the original wiring harness a few mods will need to be done but honestly the harnesses are a constant problem on an old Mopar. After 50 years the insulation gets hard and is prone to cracking. Grounds are corroded, usually there are splices for accessories added over the years etc...
Depends on if you want to do it right or do it cheap.
If it has drum brakes you may want to upgrade to disc as well.

 

[ThePurple440]

The 440 will need all of its accessories and pulleys etc...If you want to use the original wiring harness a few mods will need to be done but honestly the harnesses are a constant problem on an old Mopar. After 50 years the insulation gets hard and is prone to cracking. Grounds are corroded, usually there are splices for accessories added over the years etc...
Depends on if you want to do it right or do it cheap.
If it has drum brakes you may want to upgrade to disc as well.

Its a bare car, getting put on a rotisserie so it will be all redone

 

[Katfish]

Here's what you need for the mounts

Engine Mount Brackets for Mopar Chrysler Dodge Big Block 383 440 66-72 B E Body | eBay

We are the Big Block Mopar parts experts. These interchange with the original Chrysler part numbers # 2536132, for the right side, and 2863751 for the left. Notice the left hand bracket will have a tube welded across the channel area of the mount (shown above on the right) making it easy to...

www.ebay.com

 

[Heywodja]

www.440source.com is a great place to start, they have brackets and such and they are a small friendly shop

 

[moparmike65]

www.440source.com is a great place to start, they have brackets and such and they are a small friendly shop

Only friendly until you have a problem with one of their products.

 

[Heywodja]

Only friendly until you have a problem with one of their products.

Sorry for your experience, mine has been very good through the years.