• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Modern 300 IRS installed in a 1973 Roadrunner

C

Cliff6855

Member
Local time
5:25 PM
Joined
Feb 1, 2016
Messages
8
Reaction score
5
Location
Louisana
Has any one heard of installing a complete rear suspension from a Chrysler 300 into a 1973 b body or if it can even be done?
 
Cliff6855 said:
Has any one heard of installing a complete rear suspension from a Chrysler 300 into a 1973 b body or if it can even be done?
Click to expand...
Dont know about the 300 IRS, but the IRS in a sub-frame for a Lincoln MK Vlll is a beautiful candidate for a swap...rear track of a B bod is 59" & the lincoln is 60" The sub-frame has 4 main mounting pads....pretty painless.
 
I just recently saw one of those at a U-pull, and thought the same thing.

The fomoco engineers already did 90% of the work for you of retro-fitting an IRS into a "full size" full framed car that really wasn't designed for one..
 
YY1 said:
I just recently saw one of those at a U-pull, and thought the same thing.

The fomoco engineers already did 90% of the work for you of retro-fitting an IRS into a "full size" full framed car that really wasn't designed for one..
Click to expand...
My Homie here has a 96 mk vlll that somebody killed the 4.6 on, overheated it & ran it til it quit. Shame, i like those 4.6 motors. Ive got two projects before i can think about getting a 68 Coro, but i'll do the mk vlll swap if i get one. Yeah, Ford made location pretty straight forward....nice package.
 
I appreciate it guys. Been outside all day tearing my son 73 roadrunner down it been a great father son day
 
The second gen. of 300's are wide
75" vs the earlier 72"
I'm not sure the "actual rear end ***. track width" of either
{IMO you'd really need to measure one/both from axle flange to flange}
maybe some more inside offset on wheels or Modern wheels
might be a chance it could fit

bigger mount/cage for the independent rear section
the underside/fuel tank, shock mounts & rear frame
{maybe even under the rear seating area}
no doubt would need to be highly modified
 
Aside from the width issues, you might want to take a look at how tall it is. I decided not to try the break from an 07 Charger in my 70 GTX build because I would have had to cut into my package tray to make it fit in that area.
 
Local guy did that swap on his Cuda. Was lot of work, 1,5 in wider than stock. Use different offsert wheels
cuda_010.jpg
 
Got any more pics of how that guy installed it in his cuda. That looks pretty sweet. I was asking because we have a 73 roadrunner shell we have been playing with . And bought a wrecked 300. Pulling everything out the 300. Thought we could do a resto of a roadrunner but all modern like a 300. Something a bit safer for him to drive
 
Cliff6855 said:
Got any more pics of how that guy installed it in his cuda. That looks pretty sweet. I was asking because we have a 73 roadrunner shell we have been playing with . And bought a wrecked 300. Pulling everything out the 300. Thought we could do a resto of a roadrunner but all modern like a 300. Something a bit safer for him to drive
Click to expand...
No sorry.
 
It's cool. We have time to work on it and get it right. He is only 12 now but he has been helping me in the hobby shop since he was 9. I can't get over how much he took to my addiction of classic cars
 
I've seen it done - It was being mocked up when I was present - added mini-tubs and widened 1/4 panels --- fit some MASSIVE rubber
 
You must log in or register to reply here.

Similar threads

K
1971 Plymouth Modern rear seats
Replies
0
Views
353
kinghs95
K
Billccm
What do I need to get to upgrade to a "modern" Saginaw Power Steering Pump
Replies
11
Views
398
Kern Dog
Kern Dog
K
FOR SALE 1973 satellite 4-door grill assembly
Replies
0
Views
189
kyle340
K
Shorty Thompson
Re-Body a 1973 Road Runner
2
Replies
34
Views
2K
eldubb440
eldubb440
R
Installing an A body Mopar 4 speed into a B body or E body
Replies
19
Views
1K
Daves69
D
Auto Transport Service
Back
Top