Performance Parts?

[dablack21]

What sort of performance parts are available for the 6.4 hemi? Obviously there's a bunch for the car version, but what about the truck version? I have found cold air intakes, MSD coil packs, after cat exhausts, and I think I saw a programmer a while back. What else is out there as far as bolt ons?

 

[lgarrison34]

Ported Throttle Body should make it feel faster. Claims to add 10-15 HP but I wouldn't count on it.

 

[Crusty old shellback]

The HD 6.4 hemi has true CAI from the factory. No need to spend money on one. Remove the cover over the radiator and you will see the big intake scoop.

Not sure how much the cat back exhaust will really do other than noise. I just cut off the ugly resonator and replaced it with a straight pipe. Little bit louder at idle and when you get on it. No drone and quiet when cruising.
Factory pipe is 3 1/2" so you cant do any better than that.

 

[dablack21]

I just have an after cat setup on my exhaust. Didn't want to mess with the intake, however I was going to put a good filter on it. I wouldn't mind getting an extra MPG or 2 out of this thing, that's for sure!

 

[dablack21]

Also, I just found the hemi performance section.

....oops.

I figure this will be deleted soon lol

 

[Squatch]

I think the only real deal performance gain you are going to get on the gasser is the procharger setup and it ain’t cheap. The rest seams like a waste of money to me, and who knows how that procharger would effect the longevity of the engine.

 

[Firebird]

Ported Throttle Body should make it feel faster. Claims to add 10-15 HP but I wouldn't count on it.

I have the Moe’s throttle body, and it definitely adds to the drivability of the 6.4

 

[jadmt]

I figure my power wagon weighs 7700lbs so it would take a lot of hp increase to actually feel a difference

 

[Gondul]

Not sure how much the cat back exhaust will really do other than noise. I just cut off the ugly resonator and replaced it with a straight pipe. Little bit louder at idle and when you get on it. No drone and quiet when cruising.
Factory pipe is 3 1/2" so you cant do any better than that.

I mean.. you did the same thing by taking off the resonator...
And I lost 30# by removing the stock exhaust

 

[Gondul]

I have the Moe’s throttle body, and it definitely adds to the drivability of the 6.4

Looks like all they've done is widen the top and not the whole thing through... I think you'd still have a restriction on the backend...

 

[Firebird]

Looks like all they've done is widen the top and not the whole thing through... I think you'd still have a restriction on the backend...

Probably so, but it definitely improves drivability. I'm not saying it adds HP, but the truck just drives and responds better. I had it from my 1500 I traded in, so decided to use it on the 6.4

 

[brv10]

Put some SRT parts on it,the Grand Wagoneer 6.4 has 471hp,same block,intake is different,maybe the cam also.

 

[Crusty old shellback]

Are you sure about that?

HD 6.4 hemis are different than the SRT 6.4 hemis.