SDPC 6.4 HEMI Camshaft Shootout

[@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

[@Formerlywarmer]

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

[@jtc1964x]

Me too

[@Donteatthehomies949]

I'd like to see the 6.4 cam in the 5.7

[@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

[@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

[@captainboose8788]

610hp NA 6.4, Hell yeah.

[@whatfreshhellawaits4865]

Glad to see someone has finally done this comparison with cams and intakes... I feel like it definitely answers a lot of questions and shows the differences. Hopefully no one just focuses on the HP/TQ numbers, look more at the percentages in gains and losses... only question I have is was the cam locked out and was anything done with the tuning during these test?

[@russschwerma1246]

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

[@r71cuda]

Great video! I like the stage 4 and the el choppo but how about the FRP Tomahawk 2.0 and the MMX Max Effort?

[@ShaneEstabrooks]

Awesome this is testing I've been looking for and to see the ft-lbs gains is also what interests me. I have a 6.4 Hemi truck and am looking for towing power to improve fuel while getting rid of the MDS ❤

[@HellcatKev]

Do you have to remove the heads on a hellat cam swap? My motor is currently on the engine stand. This would be the perfect time to swap the cam.

[@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

[@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

[@slowg9706]

Apache heads won’t clear a 5.7 bore.

[@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?

[@slowg9706]

So this kinda shows the 6.4 cam isn’t worthless in a 5.7?

[@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

[@robertsrt]

Wish cam specs were included.

[@Sdpartscenter]

Cam specs are listed on our website as well as dyno sheets where possible.

[@rogerchilds2538]

I have a 6.4 I am going to installing in my ram 1500. I have a 5.7 with scatpack cam in it now it's a 13 so it has the 6 speed trans. Will I need to change to torque converter if I do the el chopo cam. Thanks good video.

[@gordonpaden5951]

Elchopo doesnt need a converter for either the 5.7 or the 6.4

[@rogerchilds2538]

​@gordonpaden5951 why does the add say not recommended for 6.4?

[@rogerchilds2538]

El Chopo

[@gordonpaden5951]

@@rogerchilds2538 You can put it in it is just not a real big improvement over a stock 6.4 cam besides sound and a little power.

[@waynemoses3956]

What kind spring compressor are you using?

[@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?

[@gordonpaden5951]

Man we are getting there. Boost is next. The spicy special I need to try to install in a stock engine because I think that it will hit.

[@Big_Purr_RT]

@@gordonpaden5951 would definitely like to see how they pair in other applications

[@Big_Purr_RT]

@gordonpaden5951 would also like to see these bigger cams on the 5.7 in comparison. The stage 4, spicy special. Need to show gains for the smaller of the hemis

[@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.

[@gordonpaden5951]

This is why we do comparisons one vs the other.

[@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?

[@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

[@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

[@gordonpaden5951]

@@captainboose8788 2500 is a time bomb at that power on a normal BGE. They are super strong blocks. 1400-1500 is no problem, but north of 2000 things get hairy.

[@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.

[@gordonpaden5951]

@@Big_Purr_RT I dont doubt that it would. I would guess that the results would be similar to the 6.1 Ported manifold numbers but were not sure.

[@adamg3911]

Have you done cam testing like this for the Hellcat?

[@Sdpartscenter]

Stay tuned.

[@TxHammer757]

What about the Edelbrock Gen 3 Hemi intake ??

[@bovineknievel410]

It will be very similar to a ported 6.1.

[@brokelahomachickenfry6497]

What rpms did you use on the 5.7 cam testing?

[@Sdpartscenter]

6500rpm

[@4077661466jp]

Yeah but these are peak figure gains, if you look elsewhere in the rpm range I see considerable amount of gain and it's clearly more than 6hp ?

[@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

[@gom4ngo745]

Box stock Hi Ram?

[@Sdpartscenter]

@gom4ngo745 absolutely fresh out of the box.

[@turbofreek]

intake chokathon

[@Donteatthehomies949]

The people want to see the stock 6.4 cam in the the 5.7

[@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.

[@HemiHalfCentury]

why tf would you use J607 you should be using the most common and newest sae standard

[@gordonpaden5951]

Cars vs parts are rated differently. It doesn't matter how we do things we always have people that say we did it wrong. What we are more interested in is the change more than anything.

[@BrianNelson-tc3gr]

SAE has only been the standard for over 30 years. Give them time to adjust