LT1-LT4 Modifications 1993-97 Gen II Small Block V8

WTF... Why is my car so f-ing slow?????

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Old 04-17-2009 | 02:38 PM
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Default WTF... Why is my car so f-ing slow?????

95 T/a

Fully Forged Lt1, Comp Cams CC306 Cam, Comp R 7.2 Chromoly Pushrods, ISKY Adj. Guideplates, Comp Gold 1.6 Aluminum Roller Rockers, Manley Valves, Hell-Fire Piston Rings, Clevite 77 Bearings, ARP Main Studs, ARP Head Bolts, ARP Rod Bolts, Cloyes Dual Roller Timing Chain, Underdrive crank pulley, CSI Electric Water Pump, Custom PCM 4 Less Tune, LT1 Edit Software, LT4 Knock Module, Throttle Body Bypass, MSD 6AL ignition, Accell Pro-Billet Optispark 2 Distributor, MSD Coil, Accell 300+ wires, TR55's, New 02 sensors, K&N Cone Filter, G2 Cold Air Intake, Power Products Polished 58mm Throttle Body, Vortech Polished Elbow, Air Foil, JETHOT Hooker Super-Comp Headers, 3" True Duals, Dual Twister Race Mufflers, Jennings Engineering Racing Viper T56, Fidenza Aluminum Flywheel, Spec Stage 3+ Clutch, Braided Steel Clutch Line, Strange 3:73 Gears, Moser 12, Black Powdercoated ZR1 Rims 17x9 Fronts W/ 275/40/17 Fuzion ZRi's, Rears 17x11 315/35/17 Nitto 555r Drag Radials, Energy Suspension Transmission Mount, Motor Mounts, Sway Bar Links, Sway Bar Brackets, Hotchkis Sway Bars, Lower Control Arm Relocation Brackets.



I ran a 12.9..... WTF... 2.5 60ft sucks but STILL!!! any ideas???

Are the stock heads really holding back that much?
Maybe it not tuned? i bought the car under the impression it was.

help?
Old 04-17-2009 | 02:48 PM
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Yep that car should be running better, how many times have you taken it down the track? That 60ft is horrible, looks like you spun the whole way there. Spinning isnt winning!

Could just be seat time...
Old 04-17-2009 | 02:52 PM
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Originally Posted by candyblueta
95 T/a

Fully Forged Lt1, Comp Cams CC306 Cam, Comp R 7.2 Chromoly Pushrods, ISKY Adj. Guideplates, Comp Gold 1.6 Aluminum Roller Rockers, Manley Valves, Hell-Fire Piston Rings, Clevite 77 Bearings, ARP Main Studs, ARP Head Bolts, ARP Rod Bolts, Cloyes Dual Roller Timing Chain, Underdrive crank pulley, CSI Electric Water Pump, Custom PCM 4 Less Tune, LT1 Edit Software, LT4 Knock Module, Throttle Body Bypass, MSD 6AL ignition, Accell Pro-Billet Optispark 2 Distributor, MSD Coil, Accell 300+ wires, TR55's, New 02 sensors, K&N Cone Filter, G2 Cold Air Intake, Power Products Polished 58mm Throttle Body, Vortech Polished Elbow, Air Foil, JETHOT Hooker Super-Comp Headers, 3" True Duals, Dual Twister Race Mufflers, Jennings Engineering Racing Viper T56, Fidenza Aluminum Flywheel, Spec Stage 3+ Clutch, Braided Steel Clutch Line, Strange 3:73 Gears, Moser 12, Black Powdercoated ZR1 Rims 17x9 Fronts W/ 275/40/17 Fuzion ZRi's, Rears 17x11 315/35/17 Nitto 555r Drag Radials, Energy Suspension Transmission Mount, Motor Mounts, Sway Bar Links, Sway Bar Brackets, Hotchkis Sway Bars, Lower Control Arm Relocation Brackets.



I ran a 12.9..... WTF... 2.5 60ft sucks but STILL!!! any ideas???

Are the stock heads really holding back that much?
Maybe it not tuned? i bought the car under the impression it was.

help?
You have to figure every tenth of a second lost in the 60 equals about .2 tenths off your e.t. so if you got it down to a average 1.9 you could go low 12's maybe high 11's with 1.7-1.8's
Old 04-17-2009 | 02:54 PM
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Yea, get that 60' down to a 1.8-1.9 and your running low 12's. You didn't list your trap speed, that what'll really tell if you making good power. You'll never get a decent ET with a short time like that, you can approxmiate .1 in 60' is worth .2 at the end of the track. So for you, drop .5 off your 60', you'll easily run low 12's. I bet you trapped pretty high, right?

Either the suspension needs some serious attention, or you need some more seat time. The driver mod can really do things for an ET, especially in an M6 car.
Old 04-17-2009 | 02:55 PM
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what was you mph
Old 04-17-2009 | 02:56 PM
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You need to just walk that thing out slow and the lay into or get some slicks and get some real nice 60's.
Old 04-17-2009 | 03:00 PM
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Originally Posted by jankie93z
what was you mph
That is the real question. Your 60' is beyond terrible and is the reason for your crappy ET's, but what is your MPH, as this gauges HP.
Old 04-17-2009 | 03:00 PM
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you must be flooring it as soon as the light changes and spinning out like stroked96bowtie said more seat time will help also get the car all dialed in
Old 04-17-2009 | 03:01 PM
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MPH? Stock heads have ANY work? Where is this car shifting? Anything below 6400 is a waste with that cam.
Old 04-17-2009 | 03:10 PM
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Not to mention I'm not sure how you spin that much with 315 DRs unless you don't heat them up at all.
Old 04-17-2009 | 03:10 PM
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if you have a 12 bolt why are you wasting time with nittos?

get a real tire on there

also like everyone else said, mph is a gauge of power-to-weight, ET is just how efficiently you are making use of that power so what did it trap?
Old 04-17-2009 | 03:11 PM
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Driver mod..get you some practice, or some Drag Radials that are worth a ****.
Old 04-17-2009 | 03:41 PM
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MPH was 109 i believe.... and this is my 5th track car. im not a professional by anymeans, but i can drive the **** out of this car!... it spins extremely easy so i usually feather the clutch.... I HAVE HORRIBLE wheel hop tho..... i just ordered some LCA's and PHB
Old 04-17-2009 | 03:45 PM
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Originally Posted by candyblueta
MPH was 109 i believe.... and this is my 5th track car. im not a professional by anymeans, but i can drive the **** out of this car!... it spins extremely easy so i usually feather the clutch.... I HAVE HORRIBLE wheel hop tho..... i just ordered some LCA's and PHB
Add adj. shocks to that list
Old 04-17-2009 | 03:51 PM
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Originally Posted by myltwon
if you have a 12 bolt why are you wasting time with nittos?

get a real tire on there

also like everyone else said, mph is a gauge of power-to-weight, ET is just how efficiently you are making use of that power so what did it trap?
Exactly.
Old 04-17-2009 | 04:31 PM
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Sounds like you need suspension and some M/T ET Street Radials or ET Streets
Old 04-17-2009 | 05:51 PM
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Originally Posted by candyblueta
MPH was 109 i believe....
Yea, that's a low 12 trap once you get it to hook up.
Old 04-17-2009 | 09:16 PM
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not enough gear. a m6 needs 4.11 at least. 4.33 or 4.56 would be better.
Old 04-17-2009 | 09:21 PM
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Sounds like a solid car. You just need the good driver mod.
Old 04-17-2009 | 10:06 PM
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Originally Posted by toby
not enough gear. a m6 needs 4.11 at least. 4.33 or 4.56 would be better.
Depends on what tire you are running and how much power you are making. I run a 26" Tire, I'll run-out a 4.11 Gear, I need 3.89's to get max performance.


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