HP Tuning on E85
Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS
I've spoke with Brett a couple times and he has no interest in working on the C8. Hopefully he changes his mind down the road. GPI I believe has a test car now, would be interesting to see if they install their cam in it. I 100% agree that those 2 shops would be the ones to watch for new info.
9.7 NA is my end goal for my C8.
C5Z in my avatar is Brett’s old car with me driving to a 10.3 way back in the day
Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS
Thanks. I’m still doing my bolt ons to hopefully achieve my desired results. Next phase is the heads/cam. I really don’t think 9.7 @ 137+ is not in the cards as tuning is available. Once the trans tune is available haha it’s only going to get better 😎
Thread Starter
Melting Slicks
Joined: Aug 2022
Posts: 2,784
Likes: 3,566
9.7s is the goal? That is moving out. That will be mighty impressive on stock displacement. I wish you all the luck in the world and hope your build goes smoothly! How much weight do you think you'll have to cut to get there?
edit: rough calculation says you'll need about 700hp. You shall be an inspiration to us all if you can get there.
edit: rough calculation says you'll need about 700hp. You shall be an inspiration to us all if you can get there.
Last edited by combatninja; Jul 29, 2023 at 09:10 AM.
Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS
9.7s is the goal? That is moving out. That will be mighty impressive on stock displacement. I wish you all the luck in the world and hope your build goes smoothly! How much weight do you think you'll have to cut to get there?
edit: rough calculation says you'll need about 700hp. You shall be an inspiration to us all if you can get there.
edit: rough calculation says you'll need about 700hp. You shall be an inspiration to us all if you can get there.
I think I can get 200 lbs out pretty easy. This fall I’ll start snooping around for more weight reduction
Thread Starter
Melting Slicks
Joined: Aug 2022
Posts: 2,784
Likes: 3,566
Is a drag pack part of your plan to get to 9.7? There is a significant weight savings right there.
Last edited by combatninja; Jul 29, 2023 at 01:05 PM.
Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS
The first hundred pounds is child's play with these cars and then it starts getting a bit more difficult. I started attacking rotational weight and dropped about 50 pounds tight off the bat. Could get another 50 or so out of the exhaust side components easily if I wanted to spend $8,000 to do it. Which I don't. The battery is an easy bit too. Li battery can easily drop 40 pounds.
Is a drag pack part of your plan to get to 9.7? There is a significant weight savings right there.
Is a drag pack part of your plan to get to 9.7? There is a significant weight savings right there.
Last edited by 123sugey; Jul 29, 2023 at 01:20 PM.
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Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS
Racer
Joined: Feb 2020
Posts: 387
Likes: 577
From: Philly
Finding the power to achieve the 9.7 @137+ is definitely doable. Getting the dct give you a solid 60' is gonna be the trick. You're gonna need a 1.40 or better to get there.
I've been 1.51 multiple times and traction is my big issue. You may have to account for suspension work in your quest for that #.
I've been 1.51 multiple times and traction is my big issue. You may have to account for suspension work in your quest for that #.
Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS
Finding the power to achieve the 9.7 @137+ is definitely doable. Getting the dct give you a solid 60' is gonna be the trick. You're gonna need a 1.40 or better to get there.
I've been 1.51 multiple times and traction is my big issue. You may have to account for suspension work in your quest for that #.
I've been 1.51 multiple times and traction is my big issue. You may have to account for suspension work in your quest for that #.
Thread Starter
Melting Slicks
Joined: Aug 2022
Posts: 2,784
Likes: 3,566
700 should be doable with 6.2L to work with. How 'streetable' do you need it to be? She may be getting a little ignorant at that power level of 112hp/L. Old rule of thumb for GM small blocks is anything over 100hp/L and your mom might object to riding in it. 
My NA goal is 90hp/L but mine is for raping backroads, not chasing tenths.
My NA goal is 90hp/L but mine is for raping backroads, not chasing tenths.
Last edited by combatninja; Jul 31, 2023 at 07:56 PM.
Pro
Joined: Apr 2019
Posts: 551
Likes: 263
I've got a 2020 so I've got a few more years of powertrain warranty. It's not worth 50 hp in a car that is already faster on the street than can be driven in a civilized way. So, maybe in a few years, and by then there will be heads and cam options that make sense as well.
Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS
700 should be doable with 6.2L to work with. How 'streetable' do you need it to be? She may be getting a little ignorant at that power level of 112hp/L. Old rule of thumb for GM small blocks is anything over 100hp/L and your mom might object to riding in it. My NA goal is 90hp/L but mine is for raping backroads, not chasing tenths.
My NA goal is 90hp/L but mine is for raping backroads, not chasing tenths.Here’s my old black NA C5Z from back in the day
Le Mans Master
Joined: Oct 2005
Posts: 5,039
Likes: 878
From: Tampa Florida
Big, loud and bumpy cams I love.
Here’s my old black NA C5Z from back in the day
https://youtu.be/97yVCwYfxYE
Here’s my old black NA C5Z from back in the day
https://youtu.be/97yVCwYfxYE
That was my track back in the days. I had a C5Z also and love it better than my C6.
Dig
Joined: Jan 2006
Posts: 5,455
Likes: 1,118
From: Port Saint Lucie FLORIDA & HONDURAS