#11
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Sounds more like a 4.10 gear, with about ~300rpm of converter slip.
If you have a high RPM stall converter though, it could be 3.73 with 550rpm of converter slip... hope you have a big trans cooler if that's the case.
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Derek Kiefer, member of Minnesota's Northstar Chevelle Club 69 Malibu Pro-Touring - 69 SS396 3spd - 23 Model T roadster pickup |
#12
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Don't forget to allow for converter slippage. However, what the OP has for RPM vs. MPH would = excessive slippage. I am with you, needs to take it somewhere and have the speedometer certified.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi 1969 Malibu COPO L72/M20/12 bolt 3.31 posi 1968 Malibu LQ9/4L80E/12 bolt 3.73 posi |
#13
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im not 100% sure about the gearing. and the speedo was used with a GPS. i just got the motor in and just need to work out a few bugs is all. I'll get er' right.
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#14
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im runnin 3.55's and a 215/75 rear tire and im around 70 at 3k, 2700 is about 60-65. And as far as getting off the line, the straight tracks are mine from nearly 2 weeks prior to the picture. 213 feet and I just stabbed it on green.
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72 Malibu-Built 468bb, turbo 400 w/ shift kit & 3000 stall, 12bolt eaton limited slip locker 3.55. Rocking the bench seat and rally rims. Last edited by BBChevelle; 09-17-2012 at 09:48 AM. |
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