E-Bodies.org Cuda Challenger Forum

Technical Shop => Engine, Transmission & Rear End => Topic started by: Iowa Six Barrel on November 13, 2017, 08:28:18 PM

Title: 318 swap to 440
Post by: Iowa Six Barrel on November 13, 2017, 08:28:18 PM
I have a 70 Challenger SE. It came from the factory with a 318 and a 4 speed transmission. Am I correct that the K frame from the 318 would also take a 440.  I thought the only K frame swap is for the slant 6 going to any V8. So, all V8s use the same K frame - difference being a 440 k frame has the skid pad welded to the bottom of the K frame to protect the deeper pan.
Title: Re: 318 swap to 440
Post by: Chryco Psycho on November 13, 2017, 08:37:20 PM
True the K frame is the same & also the trans crossmember & mount , as you said the skid plate was added to protect the deeper oil pans & can be added to any K frame
Title: Re: 318 swap to 440
Post by: anlauto on November 14, 2017, 04:03:38 AM
not "all" v8's.........The Hemi uses a different K Frame  :alan2cents:

...but yea,....you're right, it's a pretty simple swap.....you might want larger torsion bars...
Title: Re: 318 swap to 440
Post by: Chryco Psycho on November 14, 2017, 05:34:51 AM
You can mount the Hemi also just need special mounts & headers to fit .
Not the factory way but I have done it .
Even the 3 gen Hemi will bolt in with the right mounts & headers .
Title: Re: 318 swap to 440
Post by: fc7cuda on November 14, 2017, 05:35:49 AM
Quote from: anlauto on November 14, 2017, 04:03:38 AM,....you're right, it's a pretty simple swap.....you might want larger torsion bars...

or not if it's gonna be a 1/4 mile car.   :burnout:
Title: Re: 318 swap to 440
Post by: dave73 on November 14, 2017, 08:05:55 AM
I just did this swap over the winter, my first ever engine swap. It was pretty darn easy and I had no clue what I was doing going into it...

Just get ready to get nickel and dimed to death on all the little things that won't transfer from the 318 to the 440.
Title: Re: 318 swap to 440
Post by: HP_Cuda on November 14, 2017, 01:29:41 PM

Hence the mopar $$$ pit.

But at least you have something that isn't really seen very often.  :banana: