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Huron Twin Turbo C5 Build

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Old Mar 10, 2020 | 01:59 AM
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Default Huron Twin Turbo C5 Build

Was a 2200r ls1 blower car now an all new build with a Huron twin turbo kit. I’m new to the turbo game. What you think of my build and maybe power/ET potential. Mainly gonna be 1/8th-1/4 mile on the street with the occasional 60 roll stuff when nothing else is going on. Motor going in car this week. What you you think it will do and any suggestions are welcome. 2001 C5 original A4 car
408 dart 6 bolt block
Molnar power adder plus rods
Molnar forged crank
Diamond pistons
245 TFS cathedral cnc ported 6 bolt heads
BTR cathedral port intake
Ls2 ported 90mm throttle body
Haltech 2500 elite ECU
Haltech dual widebands
Haltech c02 setup (gonna push up to 30 lbs or more if they will take it)
Huron twin comp billet wheel 68/71 turbo’s
Turbo smart 45’s wastegates
50 mm bov
Dual meth
E85/100 % meth
Futral custom turbo cam
GM Cadillac racing lifters
A&A dual Holley fuel pump system
Racetronix 255 in tank pump (might add dual in tank 450’s)
Mighty Mouse catch can
ID1700cc fuel injectors (might go to 2000cc)
Coan convertor
Ecs Powerglide
Precision components shifter
Dss 3.5” aluminum couplerless driveshaft
Rpm billet flexplate
Rpm billet flexplate cone
Ecs transmission brace
Rick Wells differential brace
3.42 gear C5z diff. w/ C6 z06 guts
B&M transmission cooler
Carlyle 15” conversion spindles
Pro Brackets-track
Hoosier slicks -street








Attached Thumbnails Huron Twin Turbo C5 Build-c094787e-1363-4460-b229-14cc364f90b9.jpeg  

Last edited by Raven Mocker; Mar 17, 2020 at 11:54 AM. Reason: Sounded better
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Old Mar 10, 2020 | 06:51 AM
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Maybe 1100 ish. Glide kills dyno numbers.
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Old Mar 10, 2020 | 09:25 AM
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Originally Posted by Mavn
Maybe 1100 ish. Glide kills dyno numbers.
yea I’ve heard that about glide/dyno numbers. I hope to run a lot better than the 900 plus ls1 blower setup I had before which was a high 8-9.0 car.
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Old Mar 10, 2020 | 09:35 AM
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Cool car. But then I like C5 coupes!
I think you will want the dual 450’s.

Dyno results will depend on the torque converter characteristics.

Irregardless, it will make big power!

Hope the diff lives. Most guys go straight to the bigger C6 diff.

Ron
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Old Mar 10, 2020 | 09:50 AM
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I don't know the specifics of your current fuel system but it doesn't sound like enough. I'd look into to the dual 450's or even better yet the 525's. I'm not a fan of comp turbos at all. My car had one on it when purchased and it was a turd, worse yet their customer service was horrible. Should still be a solid set up for you though and capable of 1200 + with proper fueling and IAT control.
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Old Mar 10, 2020 | 10:07 AM
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Originally Posted by RonSSNova
Cool car. But then I like C5 coupes!
I think you will want the dual 450’s.

Dyno results will depend on the torque converter characteristics.

Irregardless, it will make big power!

Hope the diff lives. Most guys go straight to the bigger C6 diff.

Ron
man that’s the only thing I wish I could have squeezed in was the c6zo6 rear swap. Definitely gonna be in my future and see if I can get my glides main shaft swapped to a 30 spline as well.
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Old Mar 10, 2020 | 11:33 AM
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Originally Posted by blackdak318
I don't know the specifics of your current fuel system but it doesn't sound like enough. I'd look into to the dual 450's or even better yet the 525's. I'm not a fan of comp turbos at all. My car had one on it when purchased and it was a turd, worse yet their customer service was horrible. Should still be a solid set up for you though and capable of 1200 + with proper fueling and IAT control.
ive been looking into a dual 450 in tank setup actually. This is some info on my current dual Holley and single in tank Racetronix 255 pump. States good for 1100 on the A&A dual and 5-600 on the in tank..don’t know how accurate that is or if that still is enough either.




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Old Mar 10, 2020 | 03:06 PM
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Idk but should be interesting. I’ll say 1050rwhp.
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Old Mar 10, 2020 | 04:41 PM
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I missed the dual Holley in the orig post.

As long as those numbers apply to E85, could be fine
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Old Mar 10, 2020 | 05:34 PM
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Originally Posted by Detoxx03
Idk but should be interesting. I’ll say 1050rwhp.
thats heart breaking lol
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Old Mar 11, 2020 | 08:42 AM
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Simple math, really rough estimate is over 1800 flywheel, IF you have enough turbo(s) to push 30lbs . I would expect something like a pair of 75/83(74mm exhaust exducer) borgs at a minimum for moving that much air without creating high iats.
Sounds like its gonna be a crazy ride . That 408 with those heads should make 600+NA with enough cam .
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Old Mar 11, 2020 | 03:27 PM
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I just made 1165 rwhp on my 376 lsx ttix kit on pump 93 and meth.good luck should make some jam!
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Old Mar 12, 2020 | 12:26 PM
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Solid foundation. Fuel pump is current limiter. Cam details? Expected peak rpm? Will lifters handle 8500rpm? Turbos likely next limiter. Lastly, injectors might be on edge at 1400rwp? With enough cool air and fuel (e85/meth) the motor looks like it should hold around 1600whp. Maybe less, with a non CCW crank (main bearings will tell the story).

Last edited by tblentrprz; Mar 12, 2020 at 01:43 PM.
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Old Mar 12, 2020 | 01:37 PM
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Solid build, in for results!
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Old Mar 12, 2020 | 02:00 PM
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Originally Posted by tblentrprz
Solid foundation. Fuel pump is current limiter. Cam details? Expected peak rpm? Will lifters handle 8500rpm? Turbos likely next limiter. Lastly, injectors might be on edge at 1400rwp? With enough cool air and fuel (e85/meth) the motor looks like it should hold around 1600whp.
on the phone right now trying to find some options on the fueling. Looks like Racetronix has a dual 340 in tank setup I can use with my existing A&A external it looks like..still waiting on a phone call back. RIS has a dual 450 setup but a 6 week wait possibly. And as far as injectors..I can’t float another 2k for some ID’s at the moment..but vs racing has some Bosch 200-210’s for like $600 if I’m reading it right. But yea looks like I’m only gonna be making what my current fuel system is gonna allow. And lifters I should be ok it’s got the caddy lifters and rpm not sure.
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Old Mar 12, 2020 | 05:58 PM
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I have Triple walbro 450s , -8 feed -8 return, sep 1500cc injectors . And through a Glide and a 9" rear I made 900 wheel maxing out the fuel system
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Old Mar 13, 2020 | 05:43 AM
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Originally Posted by Mavn
I have Triple walbro 450s , -8 feed -8 return, sep 1500cc injectors . And through a Glide and a 9" rear I made 900 wheel maxing out the fuel system
Damn! I would have thought you had room to grow with triples..sounds like a bad *** ride! 9” and a glide..that’s sweet!
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Old Mar 13, 2020 | 10:10 AM
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Originally Posted by Mavn
I have Triple walbro 450s , -8 feed -8 return, sep 1500cc injectors . And through a Glide and a 9" rear I made 900 wheel maxing out the fuel system
Somethings not right Mavn. 1 450 functioning to spec should support 700whp without issue.
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Old Mar 13, 2020 | 10:18 AM
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Originally Posted by Mavn
I have Triple walbro 450s , -8 feed -8 return, sep 1500cc injectors . And through a Glide and a 9" rear I made 900 wheel maxing out the fuel system
You have an issue elsewhere, 2 pumps should support 900 easily, 3 is overkill. Maybe a voltage or flow through the hat/fitting issue?

Originally Posted by tblentrprz
Somethings not right Mavn. 1 450 functioning to spec should support 700whp without issue.
Exactly, have made 650-700 on a single multiple times, and well over 1000 on two.

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Old Mar 16, 2020 | 08:25 AM
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Taking the twin Holley dominators out the external which are only good for about 1100 I believe and replacing it with a Magnafuel pro star efi 750 “4703”. Gonna run around on the in tank 255 and have the Magnafuel come on at 4-5 lbs.
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