WHP guessing game!

Future1LE · 03-21-2023, 12:50 PM

Recap on the car and mod. The car is a ZL1 1LE with the A10 transmission. Currently has magnuson 2650, stock headers,stock cam, stock lt4 fueling with the dsx aux low side, Rotofab big gulp, NW 103 TB. Car made 670whp on pump 91 on 15# of boost. We were at the limit of the high side fueling.

New mods: toohighpsi port injection with reflex controller, 2 inch headers with cat delete and x pipe, 85mm upper pulley, tcm unlock/tune.

What are your guesses on pump 93 and E85? Car will be taken apart soon and hope to be on the dyno in a month.

For those who have a similar build, please share your number.

*radz28* · 03-21-2023, 01:05 PM

My guess is 730/810.

Future1LE · 03-21-2023, 01:33 PM

Quote:

Originally Posted by radz28

My guess is 730/810.

Radz, thanks alot for your help with fittings and the information on your thread! When do you think yours will be ready to be on a dyno?

laynlo15 · 03-21-2023, 02:37 PM

If you can run 15 psi on E85 you should make over 850. I wouldn't even consider running 91 or 93 octane with your setup.

Future1LE · 03-21-2023, 02:44 PM

Not trying to chase after number but it would be awesome if I can get 850whp on E85. I agree that I probably would not be running on 93 much, only for longer drive incase some gas station doesn't have pump E85.

KingLT1 · 03-21-2023, 04:16 PM

My guess is 780-800whp on E85 @ 15psi. I am not even throwing a 93 number out there...that is A to B fuel when you are in a pinch.

laynlo15 · 03-21-2023, 05:10 PM

My 850 is probably high, Kings probably closer to right at 800 and I agree 93 octane shouldn't even be used with port injection, never if you have E85 in your area.

Future1LE · 03-21-2023, 05:58 PM

800whp on E would still be awesome. Guessing I won't be able to hit 850-900 without heads/cam? If I am already doing port for fueling, is meth injection still beneficial? I'm trying to stay away from it but I know alot of people run it.

KingLT1 · 03-21-2023, 06:34 PM

I think you could hit 850, just pulley down even further. 2650 can make quite a bit more boost than 15psi.

Quote:

Originally Posted by laynlo15

My 850 is probably high, Kings probably closer to right at 800 and I agree 93 octane shouldn't even be used with port injection, never if you have E85 in your area.

If he was at LT1 compression 15 psi would get close but LT4 10:1 compression will need a few more psi. Look at the ZR1, makes 750bhp @ 15psi on 93 octane. I believe they dyno upper 6's. bolt-ons and E with stock pulleys make around 760-780whp.

Future1LE · 03-21-2023, 07:12 PM

Quote:

Originally Posted by KingLT1

I think you could hit 850, just pulley down even further. 2650 can make quite a bit more boost than 15psi.

If he was at LT1 compression 15 psi would get close but LT4 10:1 compression will need a few more psi. Look at the ZR1, makes 750bhp @ 15psi on 93 octane. I believe they dyno upper 6's. bolt-ons and E with stock pulleys make around 760-780whp.

Yea that make sense. Do you think a 80mm upper pulley then? Or do you think i should do a lower pulley?

KingLT1 · 03-22-2023, 07:55 AM

Quote:

Originally Posted by Future1LE

Yea that make sense. Do you think a 80mm upper pulley then? Or do you think i should do a lower pulley?

I would probably do a lower.

laynlo15 · 03-22-2023, 10:04 AM

Quote:

Originally Posted by KingLT1

I would probably do a lower.

I would switch to the THPSI 10 Rib with a 9.25 lower like I have. You get the Lt5 tensioner with it and you can still run an 8 rib belt if you want to.

Future1LE · 03-22-2023, 11:11 AM

Quote:

Originally Posted by laynlo15

I would switch to the THPSI 10 Rib with a 9.25 lower like I have. You get the Lt5 tensioner with it and you can still run an 8 rib belt if you want to.

Does sound like a good plan. I might have to save the lower pulley for another time and just be excited for what the car is about to make lol. Probably going to do cooling mods next.

03-21-2023, 12:50 PM	#1
Future1LE Drives: 2020 Chevy Camaro ZL1 1LE Join Date: Nov 2017 Location: Earth Posts: 108	WHP guessing game! Recap on the car and mod. The car is a ZL1 1LE with the A10 transmission. Currently has magnuson 2650, stock headers,stock cam, stock lt4 fueling with the dsx aux low side, Rotofab big gulp, NW 103 TB. Car made 670whp on pump 91 on 15# of boost. We were at the limit of the high side fueling. New mods: toohighpsi port injection with reflex controller, 2 inch headers with cat delete and x pipe, 85mm upper pulley, tcm unlock/tune. What are your guesses on pump 93 and E85? Car will be taken apart soon and hope to be on the dyno in a month. For those who have a similar build, please share your number.

03-21-2023, 01:05 PM	#2
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,240 View My Garage	My guess is 730/810. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

03-21-2023, 02:37 PM	#4
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,862	If you can run 15 psi on E85 you should make over 850. I wouldn't even consider running 91 or 93 octane with your setup. __________________ 2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff

03-21-2023, 04:16 PM	#6
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,849	My guess is 780-800whp on E85 @ 15psi. I am not even throwing a 93 number out there...that is A to B fuel when you are in a pinch. __________________ 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

03-21-2023, 05:10 PM	#7
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,862	My 850 is probably high, Kings probably closer to right at 800 and I agree 93 octane shouldn't even be used with port injection, never if you have E85 in your area. __________________ 2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff

03-21-2023, 02:44 PM	#5
Future1LE Drives: 2020 Chevy Camaro ZL1 1LE Join Date: Nov 2017 Location: Earth Posts: 108	Not trying to chase after number but it would be awesome if I can get 850whp on E85. I agree that I probably would not be running on 93 much, only for longer drive incase some gas station doesn't have pump E85.

03-21-2023, 05:58 PM	#8
Future1LE Drives: 2020 Chevy Camaro ZL1 1LE Join Date: Nov 2017 Location: Earth Posts: 108	800whp on E would still be awesome. Guessing I won't be able to hit 850-900 without heads/cam? If I am already doing port for fueling, is meth injection still beneficial? I'm trying to stay away from it but I know alot of people run it.

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