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Hello all,, just an update.. I got my baby back today. The car runs like a rocket! It took about 30 days. Installed by apex performance in Marysville, Wa. Here is the final dyno sheet. Dyno tuning was remote from Paragon. I’m extremely pleased with the set up👍🔥
we saw 587 rwhp on one pull but this was the final.
I would take your keys and your 26k check down to the local Chevy store and trade your car on a new Z06 if you are needing a power bump similar to this.
your comment makes sense but I don't understand why does one have to be so negative and discount OPs quest to make his car better. Yes, plenty of options to do something better but let's appreciate and encourage his efforts. He is not asking if its worth it. Just sharing what he did to his C8. Don't need the negative energy to bring down his parade.
Let's assume your C8 engine made 495 HP at the crank. The dyno chart showed 443.06 HP at the wheels:
443.06 / 495 = .895 (drive train losses)
If you take the new wheel HP number, 581.95, and divide it by .895, you get 650.22 HP.
If you believe that 581.95 wheel HP number translates to 710 crank HP, that stock 443.06 wheel HP number translates to 540 crank horsepower. Do you think the stock C8 makes 540 HP even though GM says it makes 490 or 495?
Let's assume your C8 engine made 495 HP at the crank. The dyno chart showed 443.06 HP at the wheels:
443.06 / 495 = .895 (drive train losses)
If you take the new wheel HP number, 581.95, and divide it by .895, you get 650.22 HP.
If you believe that 581.95 wheel HP number translates to 710 crank HP, that stock 443.06 wheel HP number translates to 540 crank horsepower. Do you think the stock C8 makes 540 HP even though GM says it makes 490 or 495?
chassis dyno sheets sure are cute
What would you like it to read…. Change this, change that…. Correction factor this, and that.
What would you like it to read…. Change this, change that…. Correction factor this, and that.
I am assuming same settings and correction factors. If that Magnusson supercharger setup makes 710HP at the crank, then the stock setup makes 540HP at the crank. Is GM conservative with the C8 Stingray HP ratings or are the Magnuson setup numbers optimistic by a healthy amount?
I am assuming same settings and correction factors. If that Magnusson supercharger setup makes 710HP at the crank, then the stock setup makes 540HP at the crank. Is GM conservative with the C8 Stingray HP ratings or are the Magnuson setup numbers optimistic by a healthy amount?
I think they are a little conservative, DCT's don't soak up as much HP as tradional auto's, but a ~10% power loss to the wheels is really efficient, you'd expect 420ish at 15%...i think the LT2 is probably more around 505-510 hp
I think they’re conservative as well. I gained closed to 150 rwhp with the Magnuson. I was running low 11’s before the install. Hoping for 10.7’s. I’ll be fine w that. Anything faster I’d be extremely happy. It’s a 91 octane tune which is obviously lower hp than the 93 octane they’ve been using for their advertising. I am running headers, and halltech CAI.. I believe the tune is very tame. Ie not aggressive. The car feels great, sounds like a mean beast. Hoping to run on October 5 at the strip. Wx permitting. Will post numbers good bad or ugly 🍻
I think they’re conservative as well. I gained closed to 150 rwhp with the Magnuson. I was running low 11’s before the install. Hoping for 10.7’s. I’ll be fine w that. Anything faster I’d be extremely happy. It’s a 91 octane tune which is obviously lower hp than the 93 octane they’ve been using for their advertising. I am running headers, and halltech CAI.. I believe the tune is very tame. Ie not aggressive. The car feels great, sounds like a mean beast. Hoping to run on October 5 at the strip. Wx permitting. Will post numbers good bad or ugly 🍻
Let's assume your C8 engine made 495 HP at the crank. The dyno chart showed 443.06 HP at the wheels:
443.06 / 495 = .895 (drive train losses)
If you take the new wheel HP number, 581.95, and divide it by .895, you get 650.22 HP.
If you believe that 581.95 wheel HP number translates to 710 crank HP, that stock 443.06 wheel HP number translates to 540 crank horsepower. Do you think the stock C8 makes 540 HP even though GM says it makes 490 or 495?
This is closer to the truth. He probably has about 660 flywheel hp. You loose a bit more to the rear wheels the more power you make but you are just about spot on.
I haven’t run it at the track/strip yet. Only a few track events left in our neck of the woods. Including this weekend. Lots of rain in the forecast.
car is running great. Will definitely update when I’m able to get it down the track.
If you'd be willing to share the costs and the total amount of this modification, I'd really like to see it. I live in western PA and if the numbers look good, I'd then need to find a really knowable C8 mechanic. I'm sure liking what you've told us so far. Thanks...
I’m into the build about $26k. That includes:
Magnuson super charger kit. $15k
East coast superchargers custom headers. $1800
Haltech CAI $700
HP tuners unlock? I need to look it up. It wasn’t cheap. it was a between $800-$1400.
Throttle body was about $250
piggy back Harness $380
Paragon remote tuning? Need to look that up as well. Under $800
Labor $6500
these prices are close not exact.
I’m very pleased w how the car is running after 1 month of driving it. It is truly a beast, and runs awesome.
New Magnuson SC install completed..
