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60 MPH @ 4,000 RPM's HELP!!!!!

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Old 11-02-10, 04:34 PM
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Deceptik1
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You could have a SC4 cluster. I just did the swap last month and for reference at 3k rpm my speedo reads about 75mph. I'm still using the auto cluster and the 4.27 auto diff with manual ecu. The car feels torqueier with the auto diff but the 4.08 manual diff should be used if you want better mileage.
Old 11-03-10, 12:14 PM
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cartmill
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there is only one speed sensor for the trans. it's at the tail shaft. 3 wire hall-effect sensor.
Old 11-03-10, 12:14 PM
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cartmill
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Originally Posted by Deceptik1
You could have a SC4 cluster. I just did the swap last month and for reference at 3k rpm my speedo reads about 75mph. I'm still using the auto cluster and the 4.27 auto diff with manual ecu. The car feels torqueier with the auto diff but the 4.08 manual diff should be used if you want better mileage.
man i am pretty damn sure the sc400 did not come with a 4.27 diff... that is a very big multiplier, especially for a v8...

me and stockhatch had some conflicting final drive information on the previous page, but 4.27 is a lot of torque multiplication for a v8 car........
Old 11-03-10, 01:08 PM
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BartleDoo
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Is this deja vu or is it just me?
Old 11-03-10, 01:44 PM
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stockhatch
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Originally Posted by BartleDoo
Is this deja vu or is it just me?
Yep. I dont know where the last thread went but we have been down this road once already.
Old 11-03-10, 06:56 PM
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Deceptik1
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Originally Posted by cartmill
man i am pretty damn sure the sc400 did not come with a 4.27 diff... that is a very big multiplier, especially for a v8...

me and stockhatch had some conflicting final drive information on the previous page, but 4.27 is a lot of torque multiplication for a v8 car........
I never said the SC400 came with a 4.27 diff. I'm referring to myself in which I have a SC300 and responded that he may have an SC400 cluster since throwing one on a SC300 gives your crazy readings no matter what.

Last edited by Deceptik1; 11-03-10 at 07:02 PM.
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