MT ET Street Radials
Melting Slicks
Joined: May 2005
Posts: 2,826
Likes: 3
From: Tennessee
Thread Starter
Racer
Joined: Apr 2005
Posts: 259
Likes: 45
From: Columbus Mn
ajrothm: Thanks for the advice and encouragement. I agree, I'd exspect this thing to be "soft" on the bottom end. The blower is barely doing anything how it's setup right now (3psi). That's why I'm so surprised at it's low end and driveability. I don't really even see any boost until the top end.
The "chokemasters" (funny) have been on there for over a decade. They were hot in their day. I don't like the resonance at 2200 rpms, but like the way they sound at idle. I'll look into your suggestions.
So far no trailer. I'm waiting on my second option. A friends friend has one stored on his lot. He is supposed to be asking if I can use it. You said it, "nail the shifts". So so important. Another thing that has been bothering me is the tach drive cable. It's so unstable. I have a new cable but it's eratic. I'm thinking I should pull my autometer from my mud truck, and mount it in the Vette. It also has a shift light.
rj8806: I'll look into americanpowertrain.com thanks.
The "chokemasters" (funny) have been on there for over a decade. They were hot in their day. I don't like the resonance at 2200 rpms, but like the way they sound at idle. I'll look into your suggestions.
So far no trailer. I'm waiting on my second option. A friends friend has one stored on his lot. He is supposed to be asking if I can use it. You said it, "nail the shifts". So so important. Another thing that has been bothering me is the tach drive cable. It's so unstable. I have a new cable but it's eratic. I'm thinking I should pull my autometer from my mud truck, and mount it in the Vette. It also has a shift light.
rj8806: I'll look into americanpowertrain.com thanks.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
sigforty: I agree, I plan on discussing the primary length size, and collector size with Headers by Ed, and Stahl as I move forward. I may buy them direct from Stahl, or have Headers by Ed build be a custom set. The cost is about the same. My skill at that level of detailed welding, well, not so good. l had a 460 ford in a pig torino many moons ago that couldn't bark the tires. I installed a set of hooker super comps, and smoked the tires sideways down the street. My 500hp 144 blower motor picked up 15hp and 10trq across the whole powerband going from 1 5/8 to 1 3/4 headers. Of course the primary length was different also. Good comment and a good reworld example of proof. Nice.
My current setup has 1 3/4" super comps, with a 3" exhaust to 40 series flowmasters. I'm thinking I may keep the 3" exhaust and run some electric cutouts.
How did you figure out the optimum exhaust for your Z06?
My current setup has 1 3/4" super comps, with a 3" exhaust to 40 series flowmasters. I'm thinking I may keep the 3" exhaust and run some electric cutouts.
How did you figure out the optimum exhaust for your Z06?
Thread Starter
Racer
Joined: Apr 2005
Posts: 259
Likes: 45
From: Columbus Mn
I didn't get a trailer, I see there is a test and tune coming up on Oct 2nd and 3rd. I may check at a local rental to see if they have something appropriate to haul my vette to the track. I'm trying to install my Afr, boost, and fuel pressure gauges at the moment, and fix my dash lights. They quit working.
ajrothm: Looking at my dyno sheet, I see I'm a liar. I do have some boost showing up at lower rpms. Sorry about that.
We were confuse about the afr, and he figured it out some other way so don't worry about the odd lean numbers.
Heres what I have going on with my guages.
I figured I better get my afr and fuel pressure gauges hooked up if I'm gonna be playing around with NOS more aggressively. Not to mention I thought the shift light and Autometer tach might help out with some consistancy.
ajrothm: Looking at my dyno sheet, I see I'm a liar. I do have some boost showing up at lower rpms. Sorry about that.
We were confuse about the afr, and he figured it out some other way so don't worry about the odd lean numbers.
Heres what I have going on with my guages.
I figured I better get my afr and fuel pressure gauges hooked up if I'm gonna be playing around with NOS more aggressively. Not to mention I thought the shift light and Autometer tach might help out with some consistancy.
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
I'm suprised that the AFR is that lean (14s up to 5400, then 12.9 at 6000)....but the brake specifics are pretty high in the mid 5s(which I would expect for a big blown application with two carbs...)....thats kind of weird.....But sometimes the wideband O2s on the dynos are not that accurate because the are not using oxygen sensors to measure, they use fuel flow/consumption and calculate the air through the carb hat (turbine)....Though I don't see how they could do that on a blow application.
I would damn sure get the best wideband O2 you can on that think and jet it until your in the 11s from 4000 on....
I was hoping you would get some track numbers...Hopefully soon.
I drove mine to the track 80 miles round trip and raced it, two weekends in a row....I was definitely sweating it though with the stock rear end and drive shaft..... With my new stuff coming in, I won't worry about it....
I would damn sure get the best wideband O2 you can on that think and jet it until your in the 11s from 4000 on....
I was hoping you would get some track numbers...Hopefully soon.
I drove mine to the track 80 miles round trip and raced it, two weekends in a row....I was definitely sweating it though with the stock rear end and drive shaft..... With my new stuff coming in, I won't worry about it....
Thread Starter
Racer
Joined: Apr 2005
Posts: 259
Likes: 45
From: Columbus Mn
ajrothm: The AFR was reading as expected for a bit, and then the numbers got weird. The exhaust temps stayed the same, etc. We did put a large MAF sensor thingy on one of the two carbs, and measured 585cfm at the higher boost settings. I converted the carbs so they are boost referenced, that may be why it starts out lean. He was confident we were fat, in the mid 12's, and we jetted it fatter until it didn't make anymore power. It will be interesting to see what my innovate afr shows and what the chassis dyno shows. I already mentioned to my manager at work I'd be taking a half day off to dyno during one of the nicer upcoming days.
The track is 100miles from my house. So....I can't take the risk of breakng at the track. Towing it home 100 miles would hurt the pocket book. I'll have no problem cruising out there after I finish the drivetrain transformation. It'll be simliar to what you are doing right now. I"m gonna sell my little 500hp 144 blown baby motor to fund the upgrade this winter.
I'm installing the innovate afr guage today...with the other gauges.
The track is 100miles from my house. So....I can't take the risk of breakng at the track. Towing it home 100 miles would hurt the pocket book. I'll have no problem cruising out there after I finish the drivetrain transformation. It'll be simliar to what you are doing right now. I"m gonna sell my little 500hp 144 blown baby motor to fund the upgrade this winter.
I'm installing the innovate afr guage today...with the other gauges.
