10-13-2021, 07:33 AM | #1 |
Drives: 2018 camaro 2SS Join Date: Jan 2020
Location: Baton Rouge,LA
Posts: 52
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2650 max hp & lb's on 93 and tuning questions
hey guys,
im wondering if anyone has a zl1 or SS with similar build, i just want an opinion on if my tuner is kind of putting a baby tune. i have a 2018 2SS A8. Current Mod List: 2650 edelbrock 2650 (non ported) ported and milled stock heads (gpi) forged wiseco pistons & k1 forged rods(lowered compression) 1-7/8 catless LT headers going to 3" mid pipe to stock NPP flex fuel sensor (which is pointless now) zl1 intank low side, zl1 HPFP, zl1 injectors, and DSX aux pump custom spec cam motion cam with 34 or 36% fuel lobe, I cant remember. 103mm TB 4" rotofab CAI (have the big gulp on order due to it dropping a lb of boost in the big end) MSD plug wire (not sure what spark plugs they used) DOD delete BTR .660 platinum springs w/ Trunnion kit GM performance CTSV lifters BTR pushrods Smith brothers bronze bushing rocker trunnion kit a bunch of seals and gaskets BTR lifter trays ATI Harmonic Dampers 9.1" lower & 3.5 upper Circle D converter 2800-3000 stall Im sure im missing a couple things, but the main issue im running into is the CAI. It starts out on the dyno running 12lb of boost then drops off a lb at the end of the pull. my tuner suggest its bc of the smaller CAI. its making a little upward of 700whp on 93 pump gas. My tuner is saying that he really doesn't want to go anymore due to the fact I'm not running any meth or port injection. I've seen multiple people claiming to be making 850whp on pump gas my question is why they can but i cant lol. The shop that I am using has tuned it before with FBO and I've had no problem. they're deff a reputable shop, and they know their shit. am just wondering if anybody is running more than 12lb of boost just on pump gas without anything else, and or if someone is breaking over 800whp on pump gas. 800-850 is my goal, i do not want to go much that because i drive the car during the weekends. I don't want a straight race car to where every time i drive it something breaks. i want to enjoy the car. end of the story my tuner said i have to be really careful on just pump gas, but i dont see why 800whp isn't achievable on pump gas.. whats the max whp people are making just on 93 with zl1 fuel system with an aux pump, and how many pounds of boost?
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2018 2ss A8-Forged Internals, heads/cam, fuel system, Edelbrock 2650
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10-13-2021, 08:03 AM | #2 |
Drives: 2016 Camaro 2SS Join Date: Apr 2018
Location: Central Texas
Posts: 1,011
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I don't think anybody on here has made 800 on pump 93 without any meth help using the Lt4 system. Even on E85 the Lt4 system taps out pretty quick. To get to the 800 you want you'll probably want to move to the Big Bore hpfp and some +30 fuel injectors. As far as making it a race car you're already there with all the work you've done so far. From 800 up your approaching the level where the 8spd becomes iffy and can let go whenever it feels like it.
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10-13-2021, 08:14 AM | #3 | |
Drives: 2018 camaro 2SS Join Date: Jan 2020
Location: Baton Rouge,LA
Posts: 52
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Quote:
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2018 2ss A8-Forged Internals, heads/cam, fuel system, Edelbrock 2650
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10-13-2021, 08:17 AM | #4 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,789
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LT4's have made right around 800whp on 93 octane with heads/cam/ported supercharger. Andrew @ CSP did a couple years ago. That being said since you lowered the compression I would think you could run 15psi on 93 octane and be ok. You are not really much different then a LT4 at this point with the lower compression forged pistons. Your dynamic compression is much lower as well with the cam.
In this case you can likely make as more power on 93 compared to E85 because you have greatly reduced dynamic compression which raises the octane wall. E85 would make more power all else equal but you will run out of fuel system on your current setup before you get to that point.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
10-13-2021, 08:24 AM | #5 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,554
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This annoying reality keeps circling back on me
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next. |
10-13-2021, 08:38 AM | #6 | |
Drives: 2018 camaro 2SS Join Date: Jan 2020
Location: Baton Rouge,LA
Posts: 52
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Quote:
i get it he doesn't want to push the limits, but is it really that risky to push more boost and make that kind of power on pump? he said there is no room for E content.
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2018 2ss A8-Forged Internals, heads/cam, fuel system, Edelbrock 2650
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10-13-2021, 09:47 AM | #7 | |
Drives: 2016 Camaro 2SS Join Date: Apr 2018
Location: Central Texas
Posts: 1,011
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Quote:
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10-13-2021, 10:14 AM | #8 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,789
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Quote:
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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10-13-2021, 10:28 PM | #9 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,739
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Quote:
I’m making 837 WHP on 93 only at 14.7 psi boost, so it’s very doable with the lower compression (I do have a bigger fuel system though). You don’t need meth to hit 800 WHP though, I did it with plain LT4 fueling and a JMS voltage booster previously. Going to E50 brought me to 927 WHP so it just goes to show how much power E is worth if you have the fuel system to support it.
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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
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10-14-2021, 08:02 AM | #10 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,554
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It's encouraging to see your 100 hp gain on E, because that's where I'm headed shortly except with FIC injectors and LPE's Big Boy pump. Any other fueling mods that aren't in your sig?
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next. |
10-14-2021, 04:20 PM | #11 |
Used to own a ZL1
Drives: '16 Z06 Join Date: Apr 2020
Location: TX
Posts: 279
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Don't know the comparison between the Edelbrock and Magnuson 2650s, but my car SBE is making 930 on 93 /w meth and another with a built bottom end is making 960 on 93 /w meth. Stock lt4 fueling, dsx lowside, cam, heads, fbo
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10-14-2021, 04:34 PM | #12 |
Drives: 2016 Camaro 2SS Join Date: Apr 2018
Location: Central Texas
Posts: 1,011
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You must be spraying a ton of meth. In one of your previous posts you said you were at 700 and your fuel was maxed out at that point.
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10-14-2021, 04:36 PM | #13 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,739
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Nope. Fore triple in tank, to LPE BB HPFP, to LPE +52% injectors. Pretty simple for the most part. No meth or port, just tune one ECU. If you need to just get 93 octane, it's no problem and if I have access to E the car automatically adds the extra timing in (and the extra 90 HP too...).
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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
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10-18-2021, 01:39 AM | #14 |
Used to own a ZL1
Drives: '16 Z06 Join Date: Apr 2020
Location: TX
Posts: 279
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I wouldn't say its spraying a ton of meth. The car makes power to redline so the cam aiding the high side that was limited(lowside was good) and allowing me to raise to redline from 6500 to 7200 really lets that HP bloom. The ported heads, meth, and pulley do help a lot too. I'm also at low elevation.
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