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| Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here. |
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#1
07-30-2021, 11:00 AM
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REAR GEAR CHANGE
Hey guys looking for advice. Wanting to change my rear gear from a 3:08 to either a 3:42 or 3:73 , I am running a 29” tall tire now and with my turbo set up i want to kept my rpms at the end of the 1/4 mile around 6,000 also. I have a 4l80e so not worried about freeway rpm …
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#2
07-30-2021, 11:35 AM
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What et and MPH will it run? What are you seeing for convertor slippage?
3.42:1, 6000 RPM, 29" tire, no / zero convertor slippage - 3rd gear 151.4 MPH - 4th gear 201.8 MPH 3.73:1, 6000 RPM, 29" tire, no / zero convertor slippage - 3rd gear 138.8 MPH - 4th gear 185 MPH Stan
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#3
07-30-2021, 03:13 PM
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Gears
Quote:
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#4
08-01-2021, 04:10 PM
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#5
08-01-2021, 04:13 PM
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#6
08-01-2021, 05:13 PM
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got it. I just listed the 3.55's for an 8.2. Good luck with your search!
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