Srt8 6.4 manifolds

[Nebraskan22]

I never found a definitive answer on this and am hoping to get one. Can one successfully install Cherokee srt8 manifolds onto a 6.4 in a 3500 pickup?

 

[Wild one]

I never found a definitive answer on this and am hoping to get one. Can one successfully install Cherokee srt8 manifolds onto a 6.4 in a 3500 pickup?

With enough money anything is possible,lol.You might have to suck it up and be the guinea pig on this one to find out,make sure you update us if they do fit.You'll have to at the very least have your Y pipe modded to fit

 

[Brandon-w]

I'm with wildone but they will probly bolt up and clear no problem but yeah depending on trans you'd need y pipes lengthened to fit I think.
Send pics.
I can say the 5th Gen ram exhaust fits on 4th Gen hemis. Just needed to extend the O2 sensor wires.

 

[Fast69Mopar]

I never found a definitive answer on this and am hoping to get one. Can one successfully install Cherokee srt8 manifolds onto a 6.4 in a 3500 pickup?

I have done this once on a 2018 Ram 3500 6.4 truck and I have seen a few of them up close with these exhaust manifolds installed. Like @Wild one and @Brandon-w stated they will fit and clear but modifications to the existing Y-Pipe will be necessary. Fabricating a connection from the exhaust manifold to the Y-Pipe is pretty simple with the correct tools and parts.

When I did this I was able to cut the ball flanges off of the exhaust from the SRT Grand Cherokee so I could use them on the truck.

 

[Nebraskan22]

That’s all I needed to hear. We had a 6.4 go bad that had headers on it. We are replacing the motor and will not be using the headers but wanted something different than the original log manifolds. I would need a y pipe made anyway since the original went mia when headers were installed. It looked like there was potential of hitting the frame and steering shaft with the srt manifolds.

 

[Fast69Mopar]

That’s all I needed to hear. We had a 6.4 go bad that had headers on it. We are replacing the motor and will not be using the headers but wanted something different than the original log manifolds. I would need a y pipe made anyway since the original went mia when headers were installed. It looked like there was potential of hitting the frame and steering shaft with the srt manifolds.

On the truck I performed the install on I had minimal clearance between the steering shaft and the #3 exhaust port but it did not hit. If it made contact I was going to use my die grinder and massage the edges of the steering shaft at the bolt and the sides of the u-joint and if that didn't work I was going to use a rounded tip chisel on my air hammer and massage the port where the contact was but I didn't have any problems.

 

[Wild one]

That’s all I needed to hear. We had a 6.4 go bad that had headers on it. We are replacing the motor and will not be using the headers but wanted something different than the original log manifolds. I would need a y pipe made anyway since the original went mia when headers were installed. It looked like there was potential of hitting the frame and steering shaft with the srt manifolds.

If you do have clearance issues with the steering shaft,you can use a body lift steering shaft extension to move the knuckle up and out of the way.They aren't exactly cheap,but they should work,as i've used them on 1500's that had interferance issues with JBA long tubes

 

[HEMIMANN]

Check to see if you got a egr bleeder pipe b u n g on the driver side manifold. These are on the truck 6.4, dunno if they're on the car 6.4.

I just went through a huge ordeal about this.

 

[diymirage]

The Y pipe is the biggest issue with the truck exhaust (not counting the warped manifolds of course)
So it should be the first part to be replaced

 

[CanuckRam1313]

The Y pipe is the biggest issue with the truck exhaust (not counting the warped manifolds of course)
So it should be the first part to be replaced

Exactly!!!

I honestly couldn't believe the improvement immediately felt the moment I drove out of the performance exhaust shop after they fabricated a custom y-pipe for me!!

It was literally night and day!!!!!!!

My new Warlock wasn't even 48hrs old when I took it to Hot Rod Scott's in Toronto and had them fabricate one for my Ram.

I had them do it to my previous 19', too!

If anyone was to ever do one single thing to let their HEMI breathe better, it's to have a custom y-pipe fabricated!

 

[Wild one]

Check to see if you got a egr bleeder pipe b u n g on the driver side manifold. These are on the truck 6.4, dunno if they're on the car 6.4.

I just went through a huge ordeal about this.

The car and Jeep 6.4 manifolds don't utilize the EGR system,only the truck 6.4's still utilize an EGR.I never even thought about his truck having the EGR tube,not sure how that would factor into the equation now that you mention it,Good catch Brian

 

[diymirage]

The car and Jeep 6.4 manifolds don't utilize the EGR system,only the truck 6.4's still utilize an EGR.I never even thought about his truck having the EGR tube,not sure how that would factor into the equation now that you mention it,Good catch Brian

My ARH headers had a EGR tube on it, we just welded it shut before installing the headers

 

[HEMIMANN]

My ARH headers had a EGR tube on it, we just welded it shut before installing

You can drill out the weld cap and use for the truck, then.

 

[Nebraskan22]

It’s been egr mds delete since I put an srt 6.4 in it so no worries there. Sadly enough it bent a rod on startup the other morning. Have no clue why. I’m putting a non srt back engine in it but just hate this ****** log manifolds. Engine on it way as well as Cherokee srt manifolds so I’ll have good info on them fitting shortly

 

[Fast69Mopar]

It’s been egr mds delete since I put an srt 6.4 in it so no worries there. Sadly enough it bent a rod on startup the other morning. Have no clue why. I’m putting a non srt back engine in it but just hate this ****** log manifolds. Engine on it way as well as Cherokee srt manifolds so I’ll have good info on them fitting shortly

Dang man. That sucks. Was the head gasket leaking coolant into the cylinder and creating a hydrolock condition or maybe and injector leaking down into the cylinder?

 

[Nebraskan22]

Negative on the coolant. My guess is injector. I could have put a rod and piston in it but I didn’t like the higher compression engine pulling trailers on hot days. Had to run premium constantly. Just wasn’t a great idea in a heavy farm pickup. It has a pretty nasty Texas Speed cam, sounded good! It was running 383 at the tires, not too bad considering the drivetrain loss on these pickups.

 

[Fast69Mopar]

Negative on the coolant. My guess is injector. I could have put a rod and piston in it but I didn’t like the higher compression engine pulling trailers on hot days. Had to run premium constantly. Just wasn’t a great idea in a heavy farm pickup. It has a pretty nasty Texas Speed cam, sounded good! It was running 383 at the tires, not too bad considering the drivetrain loss on these pickups.

Yeah, if no coolant in the cylinder I would suspect an injector leaking leaking in to the cylinder. If I had gone to the trouble of swapping to the SRT long block and had to run pump 93 for fuel I would have really looked towards a water/methanol injection system to keep the cylinder temps down while towing.

Hope you get it worked out soon.