Cam Upgrade - Hemi 6.4 

Yes. Good info. Unfortunately they still didn't address the camshaft hardness issues. I've had cams fail before the lifters.

Cheers! The 6.1 should be a lot of fun with the nitrous.

Hi. I've done it reverse order on a Jeep, so cam first, then exhaust. Cam was up 40 engine hp over with stock exhaust. Exhaust added 20 more.

Thank you...👍

Thank you Jack! This was a very small cam, about 215 on the intake and 220 on the exh at 50, with just under 600lift, still running the stock springs.

Seems normal, about 15-20 percent power loss through the driveline to the wheels.

It’s done by adjusting idle control parameters in the tune. Lightly loading up the engine with small converter always helps.

Thanks! Yes does use a phase limiter and highly recommended to keep the phaser where possible. One of the reasons why a small cam actually works so well.

@@unigroupengineering thank you for the fast reply.

@@unigroupengineering does the cam idle and run ok on stock pcm/no tune?

@@unigroupengineeringprefer phase limiter or locker?

Hi Mike, it's the Cams 218/228 HRT Stg1 NSR.

@@unigroupengineering My 2013 392 had lifter failure at 43k miles. I am considering this cam but would it work with stock exhaust headers? I figured I'd be down about 15 hp or so. Which tuning device would you recommend for a 2013? Wish your shop was in the states! Keep up the good work

@@mikevoltz6947 Hi Mike, stock headers work well with this cam. Sedans have a decent header from stock, better than the cast ones on the Jeeps. We use HP tuners. What matters most however is the tuner, not the product. I’d pick my tuner first then go with his recommended product. Best of luck with the build.

@@yguven67 Will the car run well with no tune at all? Just asking, lol.... I would probably use MMX (Modern Muscle Xtreme)

It's my daily driver, I was really planning on keeping it stock but this cam is so tempting.

Hi Jonathan, typically we've had good reliability with transmissions, even supercharged with up to 650hp at the engine.

@@unigroupengineering hi thank you very much for your reply. The maximum torque rating for the 8HP70 is around 516 torque.. So your saying they hold up pretty well?

@@jonathanslim1486 I've had a good run with them, especially in a rear wheel drive car, where excess power usually goes to wheelspin. 4wd Jeeps are a little different with all wheel drive and traction due to weight. Perhaps I've been lucky, but with 650hp at the engine, I've never had problems on a transmission that was good to begin with.

@@unigroupengineering thank you very much for your honest reply, I appreciate it. keep up the great work!!!

Hi Kirby, we had them in Australia up to and including 2020 when this was filmed.

@@unigroupengineering I’m not going to lie I’m jealous

Haha, no way. You guys get all the nice Chargers and Challangers. We dream about those here in Sydney, Australia.

Hi. Runs different idle settings for P/N/D for the transmission.

@@unigroupengineeringyou mean the proportional table on hptuners?

Try this link, had some problems with the previous: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BMvHPGC3XD4.html 🙂

Got another vid coming, stage 1 Vs 2 Vs 3. Hopefully will have it edited in the next 2 weeks. Next cam up makes more above 5000rpm but loses under. Sounds lumpier and tougher at idle. This cam above is my personal favourite as the time of writing this.

@@unigroupengineering Thanks, I'll stay tuned! Maybe suggest which cams you could still run best with the stock transmission stall? Either 5 or the 8 speed. Either way, I look forward to it!

@@NHLGUITARMAN Sure. There was a section regarding the trans/converter with the different cams, but I'll see if we can expand on it a little more.

Hi Chris, I've never tried the Hellcat cam on a 6.4 naturally aspirated.

Compcams Stg1 HRT NSR

What are the mods?

@@unigroupengineering 6.4 legmaker intake 180tstat mid muffler delete 87mm TB ported intake manifold HP TUNERS

@@glockmodder I'd go smaller for those mods for a better spread of power. The one you're suggesting will make more power from 6000rpm and up, but will give away power to a smaller cam below 6.

@@unigroupengineering ok i will keep that in mind and talk to my tuner thanks for the info .

This one was about 215/220 @ 50 and as much lift as the stock springs would allow.

You might like this one too, bit of a comparison. Same cam vs bigger. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BMvHPGC3XD4.html

it's interesting that you mention a 12k service interval. I think that's too much also. Here in Saudi the local agency/dealer actually uses a service schedule specific to the 6.2L and 6.4L vehicles where service is done every 5k, possibly to cope with the hot and dusty climate.

@@malamri424 Much better... What oil grade do they recommend there?

@@unigroupengineering5W40