My build - Lots of pics
10 Second Club
Joined: Dec 2008
Posts: 330
Likes: 1
Thanks for the comments guys. So, i am starting to think that my dyno numbers were inflated last year, by the converter having 20% slip. I am not sure if that is how it works, but @ the same boost lvls the car seems to be down about the slip we had. @ 9 psi we went from 590 last year, to 500 this year. But @ 6700 rpms the car was doing 155 mph, and last year @ 7,000 rpms the car was doing 134.
I have calculated out the slip and it is right at 4% on the dyno. I will check it again while its on the track. We ran out of fuel around 15-16 psi. The Fuel pumps would start off base 60, rise to around 75psi and then they would fall to around 45-50psi. The only explanation i have for this is the fuel pumps. They are both wired separate. They each have there own 30amp relay, and there own 20amp fuse. Because of the fuel pressure falling off we hit 102% duty cycle on the 60# injectors on 15 psi. Once we get the fuel pressure to stay, we should be able to get close to 20psi of boost on the 60's. If need be, then i might go to 80's, but we will see how close the turbo is to getting maxed out.
Even though the numbers seem lower then last year, the car is going to be faster this year!
I have calculated out the slip and it is right at 4% on the dyno. I will check it again while its on the track. We ran out of fuel around 15-16 psi. The Fuel pumps would start off base 60, rise to around 75psi and then they would fall to around 45-50psi. The only explanation i have for this is the fuel pumps. They are both wired separate. They each have there own 30amp relay, and there own 20amp fuse. Because of the fuel pressure falling off we hit 102% duty cycle on the 60# injectors on 15 psi. Once we get the fuel pressure to stay, we should be able to get close to 20psi of boost on the 60's. If need be, then i might go to 80's, but we will see how close the turbo is to getting maxed out.
Even though the numbers seem lower then last year, the car is going to be faster this year!
Please get new injectors, I tried 15 psi on the 60s and I was at 100 - 110 IDC then swapped to the 80s and I'm at 70 percent.
So since I am back as an LS owner I finally created an account. Car is looking great guys! Cant wait to come and visit (and get a ride of course). Im looking to put a supercharger on the CTS-V and maybe I will come up there to do the work? Well see, anyways good luck on the dyno this weekend!
Jeff
Jeff
He actually just picked up a 2011 cts-v for his wifes car.Im sure you will be one of the first to know how the car does tomorrow
Chris
New billet converter, new 95# injectors, 2 new gss 340 fuel pumps, new intake, ams 1000 with 2.5# c02 tank, and as much boost as we can make. I dont know if i will ever make the actual number public from this point on.
It was tuned up till about 16 psi and fuel pumps couldn't keep up.. One of them was bad we think, because they have been proven to do alot more then we have done.
Thanks, Chris
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Ok. The car made 761 whp @ 17 psi with the th400 and 9 inch. Fuel pumps worked perfect we ran a base pressure of 40#, and the duty cycle on the 95# injectors was right at 70%.
With a 6 speed the car should be around 900whp were guessing. Th400 and the 9 inch dont dyno very high. I am very happy with the numbers, now we need to get to the track.
Thanks, Chris
With a 6 speed the car should be around 900whp were guessing. Th400 and the 9 inch dont dyno very high. I am very happy with the numbers, now we need to get to the track.
Thanks, Chris
Thats the plan. I think it might be a lot of playing with the ams 1000 to get the absolute best time possible but i dont think bottom 9's will be a problem.
If the weather is nice, we will be at the track next weekend.
Thanks, Chris
If the weather is nice, we will be at the track next weekend.
Thanks, Chris
Thats what I like to hear! Glad it all went smoothly and some great numbers. I looked at the graph and the tune looks real solid! Now I cant wait to see what kind of numbers you guys pull at the track....
Jeff
Jeff
Ok. The car made 761 whp @ 17 psi with the th400 and 9 inch. Fuel pumps worked perfect we ran a base pressure of 40#, and the duty cycle on the 95# injectors was right at 70%.
With a 6 speed the car should be around 900whp were guessing. Th400 and the 9 inch dont dyno very high. I am very happy with the numbers, now we need to get to the track.
Thanks, Chris
With a 6 speed the car should be around 900whp were guessing. Th400 and the 9 inch dont dyno very high. I am very happy with the numbers, now we need to get to the track.
Thanks, Chris
What tracks do you go to? Maybe we will see you around someone. Love the build
9 Second Club
Joined: Oct 2006
Posts: 1,192
Likes: 243
From: IL
Thanks! We mostly run at Byron since its close to where the car is. We actually made some shake down runs this past weekend. We ran a best of 9.868 @ 146.69 with a horrible 1.67 60' time. We have some small things to change around, and we will be back in the next couple of weeks to get the short times down! In the mean time, here are a couple pics from this past weekend.
Sean
Sean
nice pics, car looks real good. Glad to see it out makin passes now. That hood give it way more of a mean look, I like 
Any plans for paint or is it staying black? How much clearance do you have now with the pro-flo intake?
Just noticed the front and the pins, you gunna paint those red for the front clip too or leave um?
Any plans for paint or is it staying black? How much clearance do you have now with the pro-flo intake?
Just noticed the front and the pins, you gunna paint those red for the front clip too or leave um?
Hood pins will not get painted. I might pain the hood one day. I actually would like to re spray the whole car in the next couple of years, so we will see.
Thanks, Chris
