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Dirt track racer 81 goes 11.42

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Old 10-08-2012, 11:51 AM
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We still got quite a bit of room to work with on the fuel. The truck will run 11.20s or better on this nitrous jet once we get the tune cleaned up

The truck went 11.74 at 115 the first pass. We added a degree and picked up 2mph. So it's a little light on timing also.

More nitrous, lose some weight...10 second ecsb??? Are there any of those around here???
Old 10-08-2012, 11:53 AM
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That is a smoking time. Congrats
Old 10-08-2012, 12:47 PM
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yeah there's a 2wd 10 second ecsb turbo 5.3 around here somewhere.

is the 250 shot guess correct? who speced the cam? not the typical single plane cam that i've seen alot of guys work with. then again i havent paid much attention to the typical cams that single plane l92 setups run. larger exhaust bias and lower lsa is what i would expect to see (which may be why i dont spec cams for a living lol)

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Old 10-08-2012, 12:59 PM
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too rich? moar n2o jet!!
Old 10-08-2012, 01:10 PM
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Originally Posted by chevrolet all the way
too rich? Moar n2o jet!!
Old 10-08-2012, 01:34 PM
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Originally Posted by TXsilverado
yeah there's a 2wd 10 second ecsb turbo 5.3 around here somewhere.

is the 250 shot guess correct? who speced the cam? not the typical single plane cam that i've seen alot of guys work with. then again i havent paid much attention to the typical cams that single plane l92 setups run. larger exhaust bias and lower lsa is what i would expect to see (which may be why i dont spec cams for a living lol)
It's far from an l92 nitrous cam lol.. It came out of an all motor 408 with cathedral heads.. That one if the next things on the list is an actual nitrous cam for it..
Old 10-08-2012, 01:44 PM
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what rpm did it pull to on they dyno? seems like it should pull to the moon.
Old 10-08-2012, 01:48 PM
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Originally Posted by TXsilverado
yeah there's a 2wd 10 second ecsb turbo 5.3 around here somewhere.

is the 250 shot guess correct? who speced the cam? not the typical single plane cam that i've seen alot of guys work with. then again i havent paid much attention to the typical cams that single plane l92 setups run. larger exhaust bias and lower lsa is what i would expect to see (which may be why i dont spec cams for a living lol)
Maybe 225 when the tune is cleaned up.

On the phone with the cam guy right now for a cam more suited to this setup
Old 10-08-2012, 02:02 PM
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good deal. i think theres alot more MPH in that combo with a cam better suited to the heads. my lil ls1 with a rinky dink cam and patriot heads averaged 118mph on a 125 shot. i could never touch a 60' time like this though. a single plane on l92 heads and a 225 should be into the low/mid 22x mph area. a couple small tweaks and you guys will nail the 10.x time slip in a 2wd ecsb that i gave up on.
Old 10-08-2012, 02:18 PM
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Your cam don't look to bad Tyler, what you need is some better head flow, the intake and cam will work together nicely, but the ex runners will choke it bad at that high rpm.


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