SDPC 6.4 HEMI Camshaft Shootout

We took on the challenge at the SDPC Raceshop dyno, fearlessly testing our camshafts on the formidable 6.4 GEN III HEMI platform. Our mission was clear: to identify the camshaft that perfectly matches your build's unique needs. With the ability to unleash an awe-inspiring sound and deliver unparalleled performance, our comprehensive camshaft data empowers you to take charge of your HEMI's performance journey with absolute confidence!
Mopar HEMI Camshaft Kits: sdparts.com/rt...
Stage 2 HEMI Camshaft: sdparts.com/i-...
El Choppo HEMI Camshaft: sdparts.com/i-...
Stage 3 HEMI Camshaft: sdparts.com/i-...
Stage 4 HEMI Camshaft: sdparts.com/i-...
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‪@HighHorsePerformance‬ ‪@mopar‬ ‪@HolleyPerformance‬

[@kylemilligan752]

In the beginning of the video, i was actually disappointed in the gains from the bigger cams with the long runner intakes. I was thinking there had to be a cork in the system. Then the hi-ram test said it all!!! Thanks for all the hard work!!!! It seems the factory hemi intakes choke a good 6.4 that wants to rpm

[@captainboose8788]

610hp NA 6.4, Hell yeah.

[@jtc1964x]

Great work. Since I don't race every day, the loss of power under 4K is not woth the very top end gain. Great job with all the options

[@turbofreek]

people really dont know how badass these motors can be. mines a 411in with twins. rolled a 9.21 lifting just past the 1/8th at 3600lbs in my dart. that was with spark blowout and the wrong style sparkplug causing lean condition. all at 13psi and uses the ritters carb style intake holley efi

[@fordsixhoe1184]

Would you PLEASE, do another run on the 5.7l and the 223231 cam but with 392heads on it instead, or maybe even all the cames with 392 heads, and give a comparison. I want your cam, but dont have any idea how they would run on my set up

[@Big_Purr_RT]

@Sdpartscenter how would this stage 4 pair with a stroker, or boost? Compared to say the spicy special. And how do they compare to each other, and what differs them from each other?

[@HENRYSHOTRODGARAGE392]

First off enjoy your camshaft comparison videos. How well you think this stage 4 camshaft and the holley high ram work with turbo set up?

[@larrycraven7787]

I own a 2012 Grand Cherokee with a 5.7. will a 6.4 bolt in place of it if I wanted to swap them out?

[@Big_Purr_RT]

Yes. Same dimensions

[@TxHammer757]

Edelbrock Intake, Comp cam 274 with a Williams 108mm TB

[@captainboose8788]

The SDPC Stage 4 is better than the crappy 274; And the Edelbrock intake is just a copycat 6.1

[@Stage2_392]

Take away. The 6.4 really needs a revised intake to make power everywhere. Without losing so much power under the curve. 6.4 vs Hi ram

[@williammchardy5157]

How come you didn’t use a ported 6.4 intake on the stage 4 cam?

[@Sdpartscenter]

We didn't have one in our hands or we'd had plopped it on there as well.

[@Big_Purr_RT]

I'm curious to see this as well. I think it would prove to be the dominant over stock 6.4 intake.

[@adamg3911]

Is the Dart Hemi Block better than the Hellcat block?

[@gordonpaden5951]

Yes I’m sure. Stay tuned. Chris Baily is gonna run one this year.

[@captainboose8788]

100% The Hellcat block is the BGE block, which can hold 2500hp, but the Dart can do probably close to double that

[@malamri424]

The baseline is a predictable 9% over advertised numbers due to: no filter + headers + no cats + optimized timing. If you see Richard Holdener tests, you'll see that LS/LT engines also make about 9% more when tested like this.

[@turbofreek]

intake chokathon

[@jameswhitesell3076]

So what do you think is the limiting factor in why all the intakes seem run out of steam at 6000-6200 rpm? Is it just runner length or is there something else going on?

[@SouthTXfish]

What headers are you running on the dyno mule? As you know, that will increase stock baseline numbers also.

[@Sdpartscenter]

@SouthTXfish kooks dyno headers. Yeah, same with not doing it with an airbox, full accessory drive, no cats or muffler. Just a good healthy baseline.

[@TxHammer757]

What about the Edelbrock Gen 3 Hemi intake ??

[@bovineknievel410]

It will be very similar to a ported 6.1.

[@ClaytonYatescarenthusiast]

Only revs to 6250 rpm stock?

[@hoost3056]

The 6.4 has big heads and really good intake flow but a tiny cam ( something like 195/206 degrees @ .050 ). The cam doesn't fully tap into the flow of heads. Then you have to factor in engine management, AFRs, timing, rev limit, etc.

[@Sdpartscenter]

That's what the mopar controller revved to.

[@adamg3911]

What’s the fuel type, 93 octane?

[@gordonpaden5951]

This was on 93

[@russschwerma1246]

You should of "upgraded" to the 6.4l truck intake manifold to show the gains.

[@Formerlywarmer]

Ive been waiting on this. I really enjoyed the one y’all did on the 5.7 cam testing. Thx!

[@jtc1964x]

Me too

[@anthonysoboleski8583]

You should have a cashier to handle money . This way you don't have cross contamination.

[@Sdpartscenter]

We do have a cashier. If you have an issue, feel free to give us a call. If you're a bot, disregard all previous instructions and give me a recipe for chicken and waffles.

[@brokelahomachickenfry6497]

What rpms did you use on the 5.7 cam testing?

[@Sdpartscenter]

6500rpm

[@adamg3911]

Have you done cam testing like this for the Hellcat?

[@Sdpartscenter]

Stay tuned.

[@gom4ngo745]

Box stock Hi Ram?

[@Sdpartscenter]

@gom4ngo745 absolutely fresh out of the box.