[Z06] Back on the dyno today
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
http://www.cadillacforums.com/forums...ke-w-90mm.html
This doesn't show how the FAST acts on an engine with headers though. The lightweight clutch certainly did have an effect on the torque, as evidenced by this before and after article. So even if the numbers are still somehow inflated, there's not a doubt in my mind that he'll put down over 400whp no matter where he goes with torque that'll nearly match it.
http://www.vetteweb.com/tech/0407vet...l_information/
Melting Slicks
Joined: Jul 2010
Posts: 3,355
Likes: 113
From: Los Angeles
Racer
Joined: Nov 2004
Posts: 412
Likes: 26
I'm not really a dyno guy especially after watching my 03 Cobra lay down 420 and my friend with more mods lay down almost 480 the same night and then the next morning at the track I went 11.40s @121 and he went 11.70s @120.
The thing that has me wondering about his power is that someone said that he went 128 at the track. That MPH is huge for a bolt on Z. BUT,,,,,
his MPH does match my mph with my Cobra at the same power with the weight difference. Makes me wonder if it does have something else done to it that he doesnt know about.
OP Who cares what the dyno says,your car went 128 MPH. Thats all I would care about.
The thing that has me wondering about his power is that someone said that he went 128 at the track. That MPH is huge for a bolt on Z. BUT,,,,,
his MPH does match my mph with my Cobra at the same power with the weight difference. Makes me wonder if it does have something else done to it that he doesnt know about.OP Who cares what the dyno says,your car went 128 MPH. Thats all I would care about.
Thread Starter
Racer
Joined: Sep 2009
Posts: 388
Likes: 0
From: Manassas VA
OP Who cares what the dyno says,your car went 128 MPH. Thats all I would care about.
FWIW - I don't believe there's been a cam installed. I'm the 3rd owner of the car and see the previous owner every few weeks at the local car show. He is unaware of any mods other than what he installed. I'm pleased with the numbers and am looking forward to seeing what it can do in the 1/4 mile.
Burning Brakes
Joined: Aug 2009
Posts: 816
Likes: 0
From: Virginia Beach Virginia
I'm with you on that one. I'm hoping to get over to MIR sometime soon for a test and tune session. When I do, I'll post my timeslips.
FWIW - I don't believe there's been a cam installed. I'm the 3rd owner of the car and see the previous owner every few weeks at the local car show. He is unaware of any mods other than what he installed. I'm pleased with the numbers and am looking forward to seeing what it can do in the 1/4 mile.
FWIW - I don't believe there's been a cam installed. I'm the 3rd owner of the car and see the previous owner every few weeks at the local car show. He is unaware of any mods other than what he installed. I'm pleased with the numbers and am looking forward to seeing what it can do in the 1/4 mile.
It is really fast. I have the Textralia OZ700 clutch and flywheel, LG Pro with high flow CATS and a Corsa Extreme exhaust, HS Trunion upgrade, Donaldson Blackwing air intake and 18/19 iforged rims...It is a light drivetrain.. I would be curious to see my numbers but it is not worth 80 bucks to me.
( I am sure you all know) Torque is generated from the downward force on the crank shaft from TDC to the horizontal centerline of the crank shaft. So in reality the length of your stroke determines TQ, and a cylinder bore and larger pistons would really benefit you more in the HP range than TQ. So were I to speculate on the mysteries of your engine I would lean more towards an aftermarket crank...or even best case a forged rotating assembly, it is not worth tearing your engine down to figure it out.
All I am going to say this time about your car is, you have a mystery part, Whish I knew what it was so I could get it LOL
nothing wrong with that!
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
I was pretty harsh on your numbers on your last thread. I think you have 1 hell of a car, I am really curious (as is everyone else) about your TQ numbers They are huge, too huge. I have your exact mods on my car, minus the FAST and the brand.
It is really fast. I have the Textralia OZ700 clutch and flywheel, LG Pro with high flow CATS and a Corsa Extreme exhaust, HS Trunion upgrade, Donaldson Blackwing air intake and 18/19 iforged rims...It is a light drivetrain.. I would be curious to see my numbers but it is not worth 80 bucks to me.
( I am sure you all know) Torque is generated from the downward force on the crank shaft from TDC to the horizontal centerline of the crank shaft. So in reality the length of your stroke determines TQ, and a cylinder bore and larger pistons would really benefit you more in the HP range than TQ. So were I to speculate on the mysteries of your engine I would lean more towards an aftermarket crank...or even best case a forged rotating assembly, it is not worth tearing your engine down to figure it out.
All I am going to say this time about your car is, you have a mystery part, Whish I knew what it was so I could get it LOL nothing wrong with that!
It is really fast. I have the Textralia OZ700 clutch and flywheel, LG Pro with high flow CATS and a Corsa Extreme exhaust, HS Trunion upgrade, Donaldson Blackwing air intake and 18/19 iforged rims...It is a light drivetrain.. I would be curious to see my numbers but it is not worth 80 bucks to me.
( I am sure you all know) Torque is generated from the downward force on the crank shaft from TDC to the horizontal centerline of the crank shaft. So in reality the length of your stroke determines TQ, and a cylinder bore and larger pistons would really benefit you more in the HP range than TQ. So were I to speculate on the mysteries of your engine I would lean more towards an aftermarket crank...or even best case a forged rotating assembly, it is not worth tearing your engine down to figure it out.
All I am going to say this time about your car is, you have a mystery part, Whish I knew what it was so I could get it LOL
nothing wrong with that!
Racer
Joined: May 2007
Posts: 323
Likes: 14
From: Avon, IN
OP has a FAST intake AND a lightweight clutch assembly. Everybody seems to be forgetting that when they post up their own cam only numbers with stock intake and stock heavy clutches. With stock exhaust, the FAST is good for 15whp which puts the OP at or over 400whp (notwithstanding the additional gains realized by the FAST with headers) before the clutch which is at least 10whp by itself. If we all agree that 385whp is reasonable before those 2 then the numbers don't seem all that unrealistic for a stock cammed engine. All these cammed numbers have torque lower than hp, whereas the OP's torque is pretty much there with the hp. I'm just sayin'. . . this is how I'd been planning to mod my car anyway, I'm glad to see the numbers are there.
Another thing I wanna say too, is tuning is overrated on these cars with bolt-ons. I saw a guy run my old bolt-on z on the dyno over 10 times and was only able to get about 7hp. This was with headers, cai, and borla stingers. I was at 377 untuned on 91 oct. gas and the tuner tried all kind of timing and a/f changes to make more power. Didn't make anymore power until he reduced the knock sensor activity (they kept pulling timing). Ended up with 385rwhp and 377 rwtq on crap cali gas. I eventully got rid of the cats and it easily felt like anothe 10hp at the wheels. But that's not a known fact.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Racer
Joined: Mar 2013
Posts: 325
Likes: 0
This isn't really "adding" horsepower - it is reducing the inefficiency of the motor at putting horsepower to the ground. We all know rear wheel horsepower is less than the actual horsepower the engine puts out - lighter components like flywheels or wheels reduce that inefficiency.
Drifting
Joined: Nov 2011
Posts: 1,279
Likes: 18
From: Oklahoma
In the same way a lighter wheel means more horsepower to the wheels because of less unsprung weight, so to does a clutch.
This isn't really "adding" horsepower - it is reducing the inefficiency of the motor at putting horsepower to the ground. We all know rear wheel horsepower is less than the actual horsepower the engine puts out - lighter components like flywheels or wheels reduce that inefficiency.
This isn't really "adding" horsepower - it is reducing the inefficiency of the motor at putting horsepower to the ground. We all know rear wheel horsepower is less than the actual horsepower the engine puts out - lighter components like flywheels or wheels reduce that inefficiency.