68 Valiant Hellcat Swap

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@Buford19 Yes I will be running a hydraulic clutch set up right from american powertrain. Haven't bought the clutch as of yet, but I am just mocking everything up as of now.

@davescuda Yes I will be running Mopar's standalone harness which comes with a factory unlocked pcm with the harness, bcm and fly-by-wire throttle cable.

@hemitheus I'm currently running a manual Wilwood master cylinder, it is what I used with the 340 and it worked very well. I will however, be converting the car to 4 piston Wilwood disc brakes on the front as well as a disc brake conversion in the rear. The stock disc brakes on the front will not cut it anymore lol.

@abodyjoe They are from US Cartool and they worked out great!

@Hellcat Cuda Over the weekend I'll try and get better shots of the firewall. Car is covered up during the work week. As for the supercharger cooling system, I will be using the factory Hellcat Challenger system and modify my car to accept all the lines. Its proven to work so I don't want to mess with it. Looking forward to checking out your build in the future. Sounds like you have an awesome car!

@Chuckbizkits Car already has the Hotchkis frame connectors which I installed the first time I did the car. Stiffened it up a bunch! Your 64 is coming out awesome as well just checked out the build. Look forward to seeing your progress!

@Dartnut Thanks a lot I appreciate it! The car will definitely be much faster, toying around with the idea of caging it in the future for a little more rigidity and for safety. I've also looked into a few A-body chassis stiffening kits. We'll see what happens lol.
 
hemivaliant57 said:
Thanks everyone! I will be working on it again this weekend, so hopefully a lot will get done. As for @Biff, sheet metal for this car was very hard to come by. A lot of hand fabricating was done on this build. For quarter panels I molded 67-69 Dart sheet metal brand new from year one. The passenger side fender needed alot of fabrication - I couldn't find any good donor cars. Luckily for me the hood, trunk and doors were in good shape. As for the floors I was also able to buy a lot of new sheet metal from year one. Looking back now I believe Duster quarters from the top line down are very similar to the valiant and those can be purchased brand new. Even Duster fenders are very similar to the 67-69 Valiant and may be a better alternative. Hope that helps!
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Thank you yes definitely helps !
 
The factory heat exchanger system is pretty simple, yet effective. I had plans to use the factory stuff too, and still may. For me, it all depends on how well it fits into the front of the car, not as well as the Challenger I suspect. In the meantime, I'm researching good quality aftermarket stuff that may fit better and possibly be even more effective.

One of the things I'm also researching and drawing in my mind is the use of the killer chiller system similar to what's used in the Demon, or an ice tank, that I'd only use at the track. I'd have a diverter valve that would divert the coolant through the tank (after the heat exchangers) before re-entering the blower.

The first HC engine in an A body (that I know of) is a guy here in the Bay Area who had a really nice, custom '68 Dart convertible built by Dominator Street Rods. It was first built with a 440 and toured around a bit and was shown in a Mopar magazine or two. He took it back sometime last year and had them put a HC engine in it. A friend of mine saw it at Reno's Hot August Nights last year. I've since heard it was seen at a local (to me) Cars and Coffee meet one weekend. I want to hunt this guy down and check out his Dart. It's pretty nicely done from what pictures I've seen. From the pictures however, I could not see what mods they maybe performed on the firewall.
 
Hellcat Cuda said:
The factory heat exchanger system is pretty simple, yet effective. I had plans to use the factory stuff too, and still may. For me, it all depends on how well it fits into the front of the car, not as well as the Challenger I suspect. In the meantime, I'm researching good quality aftermarket stuff that may fit better and possibly be even more effective.

One of the things I'm also researching and drawing in my mind is the use of the killer chiller system similar to what's used in the Demon, or an ice tank, that I'd only use at the track. I'd have a diverter valve that would divert the coolant through the tank (after the heat exchangers) before re-entering the blower.

The first HC engine in an A body (that I know of) is a guy here in the Bay Area who had a really nice, custom '68 Dart convertible built by Dominator Street Rods. It was first built with a 440 and toured around a bit and was shown in a Mopar magazine or two. He took it back sometime last year and had them put a HC engine in it. A friend of mine saw it at Reno's Hot August Nights last year. I've since heard it was seen at a local (to me) Cars and Coffee meet one weekend. I want to hunt this guy down and check out his Dart. It's pretty nicely done from what pictures I've seen. From the pictures however, I could not see what mods they maybe performed on the firewall.
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A chiller system would be a pretty slick idea especially if you're going to be tracking the car. Definitely would be interested to see how that turns out. And I believe the car your talking about was nicknamed "Hell Dart". Very nice car from what I see. Unfortunately I am on the east coast and probably won't get the chance to see it in person. Here's a link of their build on the shop page...
http://dominatorstreetrods.com/dons-1967-dart/c1wu019z67ilm5iqrqvbsdj0o89k82
 
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I will definitely be following your progress closely. Is there any k member or aftermarket k member that will allow you to place the engine slightly forward so that you do not have the clearance issues requiring modification of the firewall/heater?
Thank you and keep up the great work.
 
hemivaliant57 said:
And fast forward to last weekend...
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This powertrain cart we made, made the job much easier when lowering the car onto the K frame
View attachment 1715163983 View attachment 1715163985
With the supercharger on some cutting to the firewall needed to be done in order to clear the charge air cooler fittings and the supercharger coolant sensor.
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I decided to cut the whole heater box section of the firewall out until I figure out how I want to modify my firewall/heater box. (I still want heat lol)
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Im curious to the wiper motor you used.
 
Please be near Rochester. Please be near Rochester. Please be near Rochester. :eek:
 
rapidtransitric said:
Isn't that the one used on the dodge ram?


Morphed
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Different bolt pattern
This picture is one from a dodge van I think if the mounting bracket comes off you can interchange with a newer style.

Wiper Motor Interchange List with part numbers/years/body styles...

dodge van.png
 
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all I can say is I’m hooked. Been waiting to see someone try and shove a demon engine in one but wow. You got a huge chore ahead of you but bet that thing will fly!!!
 
69dodgedart360 said:
I will definitely be following your progress closely. Is there any k member or aftermarket k member that will allow you to place the engine slightly forward so that you do not have the clearance issues requiring modification of the firewall/heater?
Thank you and keep up the great work.
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Not that I am aware of at the moment. Without the supercharger the Gen III Hemi fits like a glove. Most builds I have seen so far have done firewall modifications for the Hellcat supercharger
 
duster44d said:
Im curious to the wiper motor you used.
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Currently I have no idea what wiper motor I will be using haha. All I know is that I will be mounting it on the inside of the car. I have heard Dodge Neon wiper motors are a good alternative.
 
More progress on the build in the past few weeks;
Here are the parts I used for the oil pan swap.
Milodon Oil Pan 31030
OEM Hellcat Oil Pan Gasket
Milodon Pickup Tube 18341
Milodon Oil Pan Bolts 85025

When using the Milodon center sump oil pan the pickup tube is moved further back as well, changing the placement for the support bolt for the pickup tube.
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In the picture below you can see the original location for the pickup tube support bolt which is really just a stud on one of the main bearing cap bolts.
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Using a deep 15mm socket I removed the bolt and placed it further back, swapping it with another main cap bolt. I torqued both bolts as per Dodge specifications.
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When using the new Milodon oil pan, additional bolts are used. In order to be on the safe side I drilled the oil pan gasket where the additional bolts are needed. Luckily there were small indentations on the gasket where the extra bolts are located.
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A small strip of Mopar RTV silicon was applied to all 4 corners of the block and the pan bolts were all torqued down to spec. It is also important to note that the original Hellcat oil pan bolts are too long to be used on the Milodon oil pan. Milodon has the right bolts for this application.
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