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Old 09-21-2013, 04:22 AM
SLP IROC-Z SLP IROC-Z is offline
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Originally Posted by ZFreie View Post
wtf, I wonder what an a4 would top out at with them gears lol

And thats crazy your first is that long, even with my 2.73s I would only get 45 our of it at 6k lol just noticed you 7k rev, explains more lol
if i had an automatic the 4.30s would be perfect or maybe a hair to much.

with 4% converter slip 4.57s and a 26.5" tire would go 116mph @ 7k.

4%, 4.30 & 26.5 = 123mph @ 7k.

i wouldnt be pushing it to that kind of RPM if it werent for the MN6 T56 close ratio gearing. first gear is 2.66:1 which is long, the car needs to be over geared in order to move out of the hole. its a compromise. over rev a few hundred rpm on the big end but have the right amount of torque in first, second & third gear.

it does 98mph in 3rd right now, im in high gear for less than half track when i should be in before the 1/8th

I will have roughly 4600ft lbs of torque at the rear axles with 4.57s in first gear as opposed to roughly 4300ft lbs with the 4.30s. More acceleration in 1st gear. Also less speed so less wheel spin. I bet i dont need as many rpm on the launch either.
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1999 Z28 T-Top M6 - LS6, Bolt Ons, Suspension, MWC Narrowed 9" - 415rwhp 385rwtq 10.847 @ 125.17

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2006 F350 SCSB 4x4 6.0L Diesel - Studs, EGR Delete, Powermax Turbo, Extreme Tuning & Exhaust - 13.23 @ 101
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  #12  
Old 09-21-2013, 04:34 PM
Slowhawk Slowhawk is offline
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You actually have to set the suspension/tire better so you can launch at 6000rpm and get a good 20' of wheel spin while loading the tire enough to excellerate.

use to do this on a Vette. If it hooked= 1.65 60'. Spin out of the hole= 1.42's.
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  #13  
Old 09-21-2013, 06:20 PM
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ZFreie ZFreie is offline
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Just crazy for me being in the lt1 world thinking about revving to 7k lol
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Old 09-25-2013, 06:54 PM
SLP IROC-Z SLP IROC-Z is offline
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Originally Posted by Slowhawk View Post
You actually have to set the suspension/tire better so you can launch at 6000rpm and get a good 20' of wheel spin while loading the tire enough to excellerate.

use to do this on a Vette. If it hooked= 1.65 60'. Spin out of the hole= 1.42's.
The rear suspension is stock right now and it still has a hard time with the 4.30s. I feel more traction is going to compound the issue.

I agree its about getting the right amount of wheel spin. Right now i need so much wheel spin to keep the revs up my 60s suffer.

Next year I hope to do more with the rear suspension, starting with a drag bar. There is definitly alot more left in this car
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1999 Z28 T-Top M6 - LS6, Bolt Ons, Suspension, MWC Narrowed 9" - 415rwhp 385rwtq 10.847 @ 125.17

1989 IROC-Z H/T M5
2006 F350 SCSB 4x4 6.0L Diesel - Studs, EGR Delete, Powermax Turbo, Extreme Tuning & Exhaust - 13.23 @ 101
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