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Unread 05-03-2013, 08:52 PM   #11
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Not bad, what's your R/T and 60'?
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Unread 05-03-2013, 09:06 PM   #12
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R/t .715 & .488

60' 2.283 & 2.268
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Unread 05-03-2013, 09:30 PM   #13
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Managed a 16.748
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Unread 05-03-2013, 10:24 PM   #14
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16.63
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Unread 05-03-2013, 11:21 PM   #15
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Excellent 60', must've launched very well.
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Unread 05-04-2013, 12:13 AM   #16
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Quote:
Originally Posted by Mike View Post
Excellent 60', must've launched very well.
For a 2 ton 6 cylinder SUV it's not too bad.

Final run was a 16.653 @ 79.63 MPH.

I think I discovered the best 1/4 mile performance upgrade, remove the speed governor. Stock governed speed is 100 MPH. With my lower than stock gears and short tires I coasted the last 100' through the lights. My top speed is 79 MPH.
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Unread 05-04-2013, 12:44 AM   #17
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LS motor will fix that
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Unread 05-04-2013, 11:43 AM   #18
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Wait what? It's governed at 100 mph (just a hair under on mine actually) so what's that got to do with 79 mph?

Mine pulls up to 97 mph and cuts injectors.
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Unread 05-04-2013, 11:53 AM   #19
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I changed my gearing from 3.42 to 3.73 and my tires from 235/75 to 245/45 so the speedo is reading high. At 70 MPH the PCM thinks I'm doing 100 so it cuts the injectors.

I coasted across the finish line. I think it would be good for a 1/2 second if I get the gearing and tire size reprogrammed.
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Unread 05-04-2013, 01:42 PM   #20
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Ah. I noticed the lower profile tires, didn't think that would make a huge difference. But the gearing explains it. I've got 3.73s.
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