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408/4L80E cars on the gas.

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Old 01-14-2008, 11:07 AM
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Default 408/4L80E cars on the gas.

I was curious as to how many folks out here are running 408/4L80E N2O combos and what their 1/8 and 1/4 mile times were. If you would include camshaft, gear ratio and how big of a hit (N2O) you are running it would be appreciated. Thank you in advance.

Jim C.
Old 01-14-2008, 04:21 PM
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Anyone? Anyone? Bueller?

Jim C.
Old 01-15-2008, 07:57 AM
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Only one I know of is Burbanman.

He has been 5.7 in the 1/8th and 8.8 in the 1/4.
4.11 gears, 30" tire and around 350-400 shot.
Old 01-15-2008, 04:33 PM
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Originally Posted by ATVracr
Only one I know of is Burbanman.

He has been 5.7 in the 1/8th and 8.8 in the 1/4.
4.11 gears, 30" tire and around 350-400 shot.
I appreciate it, I just went ahead and forged ahead with the turbo route. I will save the 6.0 block for a stroker when I get tired of the 347. Thanks again.

Jim C.
Old 01-15-2008, 08:19 PM
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All the cars I've seen in here are running 400s.
Old 01-16-2008, 11:28 AM
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Originally Posted by Big Geek
I was curious as to how many folks out here are running 408/4L80E N2O combos and what their 1/8 and 1/4 mile times were. If you would include camshaft, gear ratio and how big of a hit (N2O) you are running it would be appreciated. Thank you in advance.

Jim C.
send me a PM with your setup details, i use Precision Industries converters almost exclusively, and have spent quite a bit of time working with PI, testing what works and doesnt work.
I have found that the formulas used by most converter makers seem to be off a bit with LS based engines, compared to old skool SBC, but depending on your goals, I can probably help you figure it out
Old 01-16-2008, 09:58 PM
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Originally Posted by Big Geek
I appreciate it, I just went ahead and forged ahead with the turbo route. I will save the 6.0 block for a stroker when I get tired of the 347. Thanks again.

Jim C.
So I figured...
Old 01-17-2008, 09:04 PM
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Im running a 408 with a 4L80e.

4.11s here running 145mph in OD



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