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Thread: Why is my car slow?
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03-09-2008, 06:18 PM #1
Why is my car slow?
I have an 02 WS6 Pat stg II heads, cheater cam, jet hot headers, ls7 clutch, upgraded t-56 with stock 3.42's. 394rwhp, 386 tq. I can't whip a stock 03 Z06, I even switched cars. Also, I tested myself against a firehawk vert. and only pulled him by a car. I'm thinking traction may be one of my issues given when I drove the vert and punched from 3grand, the car digs and pulls, My car wheel hops and roast the tires at 3, 5, and 6k. I actually have the better tires. The car just doesn't seem to pull hard inspite of the dyno torque numbers being above stock everywhere. What can be the problem. I need to fix it quick. The ZO6 raped me on the highway. I used to run with Z06's when I was stock. .
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03-09-2008, 06:21 PM #2
- Join Date
- Nov 2006
- Location
- Broken Arrow, OK
- Age
- 49
- Posts
- 23,345
Pewter metallic- 2000 Camaro SS
Who did your tuning?
394 RWHP isn't very good for your mods.
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03-09-2008, 06:25 PM #3
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03-09-2008, 06:32 PM #4
- Join Date
- Nov 2006
- Location
- Broken Arrow, OK
- Age
- 49
- Posts
- 23,345
Pewter metallic- 2000 Camaro SS
Lot of reasons why your car might be slow. How is your rearend? It could be going out causing you to be slow. What intake are you running, LS6 intake? Do you know what your air/fuel ratio is? Maybe your tranny isn't healthy, even though you had it upgraded. A heads/cam M6 LS1 should be putting down 420 RWHP range.
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03-09-2008, 06:34 PM #5
That car should be well over 400rwhp with those kind of mods, 390 sounds pretty weak. I would take it to a good shop and have them check everything over and then redyno. Something is wrong dude.
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03-09-2008, 06:37 PM #6
- Join Date
- Aug 2007
- Location
- Corn and Soybean fields
- Posts
- 5,483
Gray/ White- 09Ram 1500 83 Thunderturd
Start with getting rid of that stock 10 bolt and get something stronger and 4.10s. Second get a new tuner
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03-09-2008, 06:37 PM #7
friend of mine has the same cam and heads you have... I think he is putting down around 430's
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03-09-2008, 06:41 PM #8
His rear could be shot, but this isnt why he is about 50 horses short at the wheels lol I wonder if his engine is completely healthy and whether or not his a/f is correct.
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03-09-2008, 06:42 PM #9
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03-09-2008, 06:42 PM #10
the tranny was stock, then I sent it to T56 rebuilds. No improvement. The rearend is roaring or anything. I know that if I removed my cats and went with a FAST over an ls6 then I should get at least into the 410-415 range. However, even with 390, I should be able to run a 360 hp Z06 shouldn't I?
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03-09-2008, 06:43 PM #11
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03-09-2008, 06:43 PM #12
I'll look for the dyno sheet and try to post it, However, the local mustang shop Dynospeed said the af could be slightly improved but was pretty good.
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03-09-2008, 06:44 PM #13
- Join Date
- Sep 2006
- Location
- Canby, Oregon
- Age
- 36
- Posts
- 2,121
Pewter- 1999 Camaro SS-M6 #1775
What kind of suspension mods do you have?
1999 Camaro SS/ Pewter/ #1775 - LS1 6-speed - Predator 3 Custom Tune - Pro 5.0 - LS7 Clutch - 3.90's - Koni's - Strano Springs and Sway Bars - SFC's - Full UMI Chassis and Suspension - LS6 Intake PnP TB - ARH LT's and Kitty Ran Away - Magnaflow.
12.6 at 112
http://www.fquick.com/Tyler_LS1
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03-09-2008, 06:44 PM #14
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03-09-2008, 06:45 PM #15
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03-09-2008, 06:47 PM #16
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03-09-2008, 06:48 PM #17
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03-09-2008, 07:16 PM #18
you say it was a mustang dyno?
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03-09-2008, 07:41 PM #19
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03-09-2008, 07:43 PM #20
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