11-06-2020, 03:53 PM | #1 |
Drives: 2018 Rs Camaro Join Date: May 2020
Location: HI
Posts: 28
|
*UPDATE* Supercharged LGX new Dyno figures, and questions about the 8Spd Trans
Hey guys, it's been a moment or two.
I haven't updated everyone on what's been going on, as well, not a lot had happened due to covid. As a quick recap, I bought the Edelbrock 1.7L roots supercharger for my LGX Camaro. It came stock with a 6lb 3.5" pully. I got about 80ish WHP from it going from 260WHP to 340ish WHP. I wasn't very happy with their extremely fat tune, and my pipes were being blackened by the amount of unburnt fuel. That said, the performance increase was significant, and the physical equipment was quality stuff. So I bought an 3.25", 8lb pully, and had my shop retune the car. They wanted to push for more, but due to spark knock, they had to take timing out and we ended around 353WHP. Another small increase, while they told me "You need to go to these cattless downpipes, the engine is being choked. This will fix a lot of your issues." Soooo, I waited on that. Until I realized the other possible problem they warned me about manifested and "forced" my hand, I started to blow my cats out. I bought the American Racing Headers, 2016-2020+ Catless downpipes. I got those installed, and they re-tuned the car and I got another solid 30WHP. I went from 353WHP to 383WHP, and it's still a very conservative tune. It pulls really hard now, if it doesn't spin the tires. The only "worry" I have is it will slip the clutch really hard between 1st and 2nd when WOT sometimes. Or when rolling into the throttle and shifting it'll so something similar. There aren't many options to fix this, and I don't think spending $800 on "transmission tuning." will fix that, will it? I probably need to upgrade the internals, or swap to a heavier duty transmission? Unless it is rated for the same load the SS made, and just needs to be tuned to expect that power? Here is a video, it doesn't show the slipping but it does show the acceleration. Make sure to turn the sound on. https://gfycat.com/spiffyuntriedappaloosa |
11-06-2020, 03:56 PM | #2 |
Drives: 2018 Rs Camaro Join Date: May 2020
Location: HI
Posts: 28
|
Crap, realized I posted this in the wrong section. Probably needed to post this in the forced induction section?
My primary goal here is asking if the Trans tuning that is being offered, would make a difference in my transmissions ability to cope with the significant increase in power? |
11-06-2020, 03:56 PM | #3 |
Drives: 2018 Camaro V6/RS Join Date: Nov 2018
Location: MI
Posts: 1,596
|
Very nice. So you're running about 8 psi on 93 octane?
|
11-06-2020, 04:02 PM | #4 |
Drives: 2018 Rs Camaro Join Date: May 2020
Location: HI
Posts: 28
|
We only have up to 92 here, but yes. With the downpipes they're able to do a whole bunch more.
I'd like to push to 10 or 12lbs and get up to around 425WHP, but with the integrated headers, I'm not sure how much more I can really do with this engine without E85 or Meth spray. |
11-06-2020, 05:11 PM | #5 |
Drives: 2018 Camaro V6/RS Join Date: Nov 2018
Location: MI
Posts: 1,596
|
Good deal. Those numbers are right there with a stock LT1
|
11-10-2020, 03:26 AM | #6 |
Drives: 2015 Camaro 1SS Join Date: Dec 2017
Location: Antelope, CA
Posts: 208
|
Even got a little blower wine, nice.
|
11-15-2020, 01:49 AM | #7 |
Drives: 2018 Rs Camaro Join Date: May 2020
Location: HI
Posts: 28
|
So the question begs
How do I deal with the transmission slipping? If I do a manual mode, WOT pull from a dig, if I shift at 7k, it'll slip real bad into 2nd, and then I'll early shift into 3rd to deal with it. Will a "Trans tune" help this, do I just need to check the fluids? Is there any mechanical upgrades I can do to it, or is a trans swap(to like the current 10spd) the only viable solution? |
11-15-2020, 05:00 AM | #8 |
Drives: 2015 Camaro 1SS Join Date: Dec 2017
Location: Antelope, CA
Posts: 208
|
I'd start with a tune, at the least it should help with the slip. Looks like the gearbox is rated at 400 lb-ft and looking at your WHP I'm sure your close to that. That's what sucks about the non V8 Camaro's. The torque that the rest of the drivetrain can handle is barely more that the engine's produce stock.
|
11-24-2020, 05:50 PM | #9 |
Drives: 2018 Rs Camaro Join Date: May 2020
Location: HI
Posts: 28
|
|
11-24-2020, 05:53 PM | #10 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,760
|
Quote:
__________________
2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
|
|
11-24-2020, 06:03 PM | #11 |
Drives: 2018 Camaro V6/RS Join Date: Nov 2018
Location: MI
Posts: 1,596
|
On the topic of the transmission, I take it you had the latest fluid and flush procedure done?
|
11-24-2020, 06:36 PM | #12 |
Drives: 2018 Rs Camaro Join Date: May 2020
Location: HI
Posts: 28
|
|
11-24-2020, 06:43 PM | #13 |
Drives: 2018 Camaro V6/RS Join Date: Nov 2018
Location: MI
Posts: 1,596
|
Reason I ask that is because if it hasn't been done that could be part of the problem. If not caught in time it will damage the torque converter and that's obviously not good
|
11-24-2020, 07:21 PM | #14 | |
waddupdgriff
Drives: Supercharged 2016 2LT RS Join Date: Sep 2017
Location: IG: waddupdgriff
Posts: 213
|
Quote:
Another friend of mine did similar to you but went down to a 3 inch. I’m gonna be a little more conservative and do a 3.25 inch myself. Did you swap the pulley and belt or the shop did that as well? Hoping to see what I’m about to get into lol
__________________
2016 Chevrolet Camaro 2LT RS
• Edelbrock E-Force Stage 1 Supercharger • Custom tune by Overkill Motorsports • AFE Momentum GT Pro Dry Cold Air Intake • MBRP SS Cat Back Exhaust • iROC-z Wheels • Nitto NT555 G2 Tires (275 fronts, 305 rears) |
|
|
|
Post Reply
|
|
|