1975 Dodge Colt 4G63-T5 trans, 8.8 rear.

Swaps in Progress, on the Road and on the Track.

Moderators: DJpowerHaus, mattmartindrift

Post Reply
RWD4G63
Knowlege Seeker
Posts: 10
Joined: Sat Apr 09, 2005 2:56 pm

1975 Dodge Colt 4G63-T5 trans, 8.8 rear.

Post by RWD4G63 »

I've been driving a RWD 4G63 powered car since 2003. I had my swapped 1981 Dodge Challenger for a long time, and due to fact that for the majority of the time I owned it, I didnt have a garage, it sat outside for quite a few years and began to develop quite a bit of rust. So I decided to look for another chassis to swap my drivetrain over to. First, I found a really clean 89 Mighty Max that I was going to swap the 4G into. However, after my trip to the 2014 DSM Shootout, where I saw 6 swapped Max's, I decided to go with something a little more uncommon...

That's when fate stepped in, the day I got home from Ohio, I went on my local Craigslist page and found a 1975 Dodge Colt for sale less than 2 miles from my house. It was a hideous yellow, with hacked up front fenders, and cut up front suspension, but the chassis was solid.

Image

Image

My plan for the car was a little different than the Challenger Build. I was going to keep the 2.4 liter G4CS engine, turbo, intake, and Intercooler, but I wanted to go back to a manual transmission, instead of the TH350 that was in the Challenger. I was also planning to keep the 8.8 Ford rear from the Challenger, but it of course would have to be narrowed to fit the Colt. I wanted this car to be a driver, things like, heat, windsheild wipers, street tires, etc... would need to be kept functional.

Here's a few pics of the original engine and the start of the tear down process...

Image

Image

Image

After the old engine was removed, and the bay cleaned and sanded down, I decided to paint the entire engine bay with GM Trunk Paint. It is similar to bed liner, or undercoat. It's a thick, textured paint that is very durable, and clean looking.

Image

Image

...and with the ETS 4" intercooler mocked up...

Image

...now with the aluminum C&R Radiator...

Image

Image

Since I was going with a manual transmission I had to work out a Hydraulic Clutch, and pedal assembly. I decided to go with a Wilwood set up. I sandwiched a 2 mil. thick plate in between the pedal assembly, and master cylinder to strengthen the firewall.

Image

The underbody of the Colt was in great shape, but I decided to give it a new coat of underbody spray.

Image

Now that the engine bay was prepped, It was time to mount the heart of the Colt in there. I wanted to move the engine forward in the bay about 2 inches to clear the CAS. I didn't want to have to modify the firewall, and I wanted to be able to remove the CAS if needed. I used some 3/8" steel plate and trimmed, spaced, and welded the stock motor mount brackets 2" forward.

Image

Image

Image

So, since I was going with a Manual Transmission, I needed a Bill Hincher bell housing to be able to bolt up my T5 transmission to the 4G63. I decided to use a South Bend clutch, and a T5 out of a 1994 GT with a .68 5th gear.

Image

Image

Image

Now it was time to try and fit it in the engine bay. I decided to try and maneuver the engine/trans combo it into place together. It was tricky, but I was able to get enough tilt on the cherry picker to squeeze it in there. Looks right at home....

Image

Image

Here's the Turbo, Forced Performance 3065...

Image

I guess Im pretty good at that whole Math thing, because the shifter ended up in the right place. I had to do quite a bit of trimming of the trans tunnel to fit the T5, but it sort of fit...

Image

Image

Now back to the rear end... As I mentioned, it was a bit too wide...

Image

I had it narrowed by a nearby shop call ProFab Chassis, they did a beautiful job...
I installed my .411 gears, Eaton Diff, and custom 31 spline axles.

Image

Image

Image

Image

For the front, I decided to go with 1994 Toyota MR2 KYB Gr2 shock inserts, (they fit, weird), all new bearings, bushings etc... and poly sway bar bushings. The brakes were puny up front so Charlie for the Colt forums made me some custom caliper brackets to fit 1994 Eclipse dual piston calipers with 11.7" rotors.

Image

Image

Image

Image

Of course the factory dash, and gauges would not work with the 4G63 so I decided it would be cool if a 1975 car had a fully digital dashboard.
I went with Intelletronix guages for the main cluster, as well as an innovative LC1 wideband gauge, and a Greddy Profec Boost Controller.

Image

Image

Image

Now that the car was running and driving. (sort of) it was off to the Body Shop. the front fenders were hacked beyond repair, so I had to find another pair that was unmolested. I actually found a guy in PA selling a set of Fiberglass front fenders for a 75 Colt on craigslist. Really??!! I bought them immediately.
The quarters were in much worse shape than we thought, and needed a ton of work.

Image

Image

Image

After about 40 hours of sanding it was time to roll it in the paint booth...

Image

Image

Image

Image

The color is a 2015 Corvette color called "Tiger Shark Grey" it looks almost silver in the sun, and dark grey in the shade. I love it!
The wheels I decided to go with were Enkei Compe Gunmetal (coated black) in 16x7 with 0 offset in the rear, and +25 up front.

Image

I also decided to do the Bumpers, and grille in Satin Black. here is the final product...

Image

Image

Image

Image

Image

Image

The car is amazing to drive, and I am still driving around at 15lbs of boost, the car is currently back at the Chassis shop getting a custom steering centerlink. (had a clearance issue), and a 4 point roll cage. As soon as it comes back, and there is no salt on the roads, I plan to really put it through its paces. Thanks for looking...
1975 Dodge Colt (4G63)
turbostellar
Addict
Posts: 102
Joined: Sun Jan 07, 2007 10:09 pm
Location: Bowmanville, Ontario Canada

Post by turbostellar »

Very nice work. The car looks great
DJpowerHaus
Sir Post A Lot
Posts: 1779
Joined: Wed Apr 07, 2004 3:24 pm
Location: Baltimore, MD
Contact:

Post by DJpowerHaus »

Thanks for posting. Looks great! What engine management are you using? I can't imagine you're using a stock ECU on there.
Image
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
RWD4G63
Knowlege Seeker
Posts: 10
Joined: Sat Apr 09, 2005 2:56 pm

Post by RWD4G63 »

I'm using DSM Link V3, with Speed Density. I know everyone loves AEM, but for simplicity on a street car, you can't beat ECM Link...
1975 Dodge Colt (4G63)
turbostellar
Addict
Posts: 102
Joined: Sun Jan 07, 2007 10:09 pm
Location: Bowmanville, Ontario Canada

Post by turbostellar »

Car looks awesome. Very nice clean work.
cruuz
Knowlege Seeker
Posts: 38
Joined: Wed Oct 12, 2011 9:33 pm
Location: Pittsburgh, PA

Post by cruuz »

Awesome work! Maybe we can meet up this coming year to drive to the shootout, I imagine you pass pretty close to me in Pittsburgh if you're coming from NJ
seblake
Knowlege Seeker
Posts: 9
Joined: Mon Jun 12, 2017 10:16 pm

Post by seblake »

Everything looks great. I also have Enkei Compe wheels on another car and I like them.
Post Reply