Does a cam swap kill MPG?
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- Опубліковано 11 вер 2024
- In this video I try an experiment to test what gas mileage I can get from my cammed 2009 Challenger. The motor is the 5.7 hemi and the cam is an HRT Stage 2 cam Duration 273/279, Lift 0.596/0.582 which would be considered a moderate cam. 432 WHP with this setup for reference.
Mods:
Comp Cams HRT Stage 2 Cam w/phase lock
Stainless Works long tube headers
Magnaflow 3" Catback exhaust
Corsa closed lid style air box
Whiteline cradle bushings
Hotchkis front and rear sway bars
432 whp, 422 lb/ft tq.
Instagram: @trackpackrt - Авто та транспорт
Glad to see youre still making videos! MPG is a common thought but frequently shut down. Thanks for the input!
I've got a garage full of upgrades waiting to go in!
@TrackPackRT we are waiting for them. Ill look out for future videos. Good luck
@@how_long I promise this next one won’t be so long! Haha
@TrackPackRT longer video's just means more to watch haha.
Just finished the video. I was hoping youd slip in a "smiles per gallon/liter" joke 🤣. I definitely thought it a couple of times
@@how_long I think this video showed me I’ve been smiling per gallon a little too much. 😬
With a cam you have to experiment around to get the RPM that is most efficient range for cruising because of the overlap. A bit faster might be higher MPG'
I actually like Turbochargers for HP while retaining good MPG because cams (I love for the nasty sound) and superchargers have so much parasitic loss (takes 180 HP gain to show 100hp at the wheel) that they consume much more fuel.
Very true, turbo would be the ultimate for power and MPG!
Hey, I was wondering when you were going to come out of hibernation.
Glad to see some content. Does the car feel good after dropping the rear end awhile back?
Hey man thanks for stopping by! Yea, the car feels great with the cradle welded up and the new poly diff bushings! Best it's ever felt honestly!
Im having some trouble finding what tune i need after the long tube header install.
You'll have to talk to a remote tuner if you're going that way. Perhaps Hemifever, Jay Green come to mind.
You could also try Satera tuning. I've seen them work with other channels and do a great job
Hmmm… I’ve only ever gotten 22mpg max/19 city when the car wasn’t modified, and after my 392 cam I’m getting 16 city, but MY city driving is totally stop-n-go. YOUR city driving is like my Hwy driving.
I mean I only showed a short portion of my city cruise but it was light traffic, definitely not rush hour. In rush hour I could see that number dropping by a few mpg for sure, but I'd bet it's still around the 20-21 range when going gently. It was a fun experiment to do, definitely opened my eyes about my driving habits.
I have a HRT 2.0 comp cam in my 2018 300c and if I drive like a normal person it's still good economy
I think that's what I was missing, the normal person part. haha
@TrackPackRT Big factors to note: The Chrysler 300C has the 8 speed and I still have the stock 2.62 final drive rear end. So there's still a lot of good cruising ability there.
Have you ever done what the manual says ?
1st to 3rd to 5th
No mods I’m mid 27mpg highway and around 20-21 over all
Never done a all city
I definitely will on occasion. If I take one gear up a little higher in the rpm’s but traffic is slow or I’m hitting cruising speed I’ll just skip a gear and drop it right into 4th or 5th depending on the circumstances.
Those are some good numbers for mileage! More disciplined with your right foot than me!
In my 5.7 using a FRP Tomahawk and full exhaust 8lbs boost. If i drive normal on a longer trip ill avg 19mpg but shorter drive around 17..under boost im getting around 13.
Nice!
I really wanted to calculate everything to get as accurate as possible to really see what my mileage was, and what what possible. It was a fun experiment.
@TrackPackRT I'm currently doing dynos to see what numbers I get from different mods/stages I have done using the same dyno. Stock I was 340 whp and just procharger and prochargers tune I was 445 whp. I have done alot since then and will dyno again soon 2x for what it is now and a water/meth kit I have installed.
@@darrenkidd271 I’d be curious! Probably see some healthy numbers!
What are you paying for 94? I can get 110 from a sunoco near me but it's $10/gal, or about $2.86/L. I usually mix 2Gal of 110 with 10Gal of 93 and it gives me 12Gal of 96. I have a 5.7 to 397 stroker, ported heads, fbo at about 10.6:1. I can watch the fuel needle moving, i get about 175 miles to a tank city
94 here is floating around $1.89/L. Sounds like you have a pretty awesome setup! 💪
@@TrackPackRTthanks, it's pretty rowdy lol hopefully i can put a whipple on it one of these days. wow that's over $7/gal. I pay about 4.50/gal for 93, plus the 110 i mix in, it comes out to about $6/gal. My heart goes out to you, i thought it was pricey here in Michigan. Thanks for your content. Your cam series really helped me can the car a few years ago, now i can't stop lol. I will probably be over hauling the control arms and such, you're videos will help me there too!
Why? Were you knocking with 93?
@@bailey9r no, it’s just the highest octane we have available around here (besides race gas) so it gave us the most room as far as pulling the most power out of the tune while still being safe.
@@bailey9r i was getting burst knock on tip in with 93. Around me "93" isn't always "93". So to eliminate octane being the cause, i started by putting 5gal of 110 in a full tank. I got my timing where i wanted it with no knock and started dialing down the 110. I only put 2gal in a full tank now.
Have you gotten the barton short throw shifter yet? I started following your IG.
Still got the stock shifter! Thanks for the follow!
I'm still on the fence on the Barton as well. The stock one isn't bad to me and I've heard of noise and vibration issues with the Barton. @@TrackPackRT
@@bailey9r my good friend Matt has one in his R/T he’s let me drive it a lot and it is great. I think for me I just had more things I wanted to address first and my shifter for the most part hasn’t annoyed me too bad. It’s a big change from stock though but in a good way.