Quote:
Originally Posted by Pete
Here's what i think.
That auto car for example, lets say peak power is at 5500 rpm with the 3.50 gears it would finish the 1/4 at 4700 rpm with the 4.11 it would finish at 5500 this is the reason for the much better ET's.
My Z peak power 6900rpm with 3.45 i finish in 3rd gear at about 7400 rpm
With 4.10's i finish in 4th at 6800 below my power peak so either i god with 4.33's or 4.50's
My Z looses about 15hp from peak (6900) to 7400rpm so not much loss.
I went from 1.74 60ft to 1.59 you would think 1.5 at 60 foot would get me 2-3 tenths i can't shift that fast so i loose it at the extra shift even if i got 11.00 it still did nothing for me.
Pete
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So,you're going through the lights in 3rd gear,not 4th? If your stock displacement LT5 makes peak at 6,900,I agree a 4.30 cog might work better than a 4.10 for your combo. A 4.56 would probably be too much gear.