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bolt on 03 cobra vs bolt on 06 vette

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Old 09-04-2012, 02:16 PM
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Default bolt on 03 cobra vs bolt on 06 vette

so my buddy bought a stock ls2 vette about a month or so ago and so far he has but long tubes on x pipe with magnaflow mufflers, cai, plugs wires and a 160 t stat. ended up putting down 385rwhp and 373tq they were only able to get 1lb ft of tq off the stock tune. 03 cobra has shorty headers, with 3 inch duals into flowmaster, stage 1 ported blower, 2.8 pulley, cai, ported plenum, etc... these races the cobra gets out on him but u can see the vette start pulling then he lets out vette has 1 passenger cobra doesnt. They raced again a day later with no passengers and the vette won by a car.


video starts late


this is prolly the best one
Old 09-04-2012, 05:41 PM
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Maybe the slowest ported, pullied Terminator on earth.
Old 09-04-2012, 06:00 PM
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Originally Posted by 93 LT1 Vette
Maybe the slowest ported, pullied Terminator on earth.
Old 09-04-2012, 06:41 PM
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what was the outside temps? I'm thinking that cobra was running hot as he should have walked you easily with just a pulley/basic boltons.

Now is the time to tell your buddy all about doing the LS3/L92 head and intake swap over on his LS2. By far the best upgrade you can do to a LS2 powered vehicle: power increase directly equivalent to dropping in 235 AFR heads/FAST intake but for a fraction of the cost (unported heads/intake $1200 with all gaskets needed, $700 more for ported heads/intake and ilifter trunnion upgrade along with LS7 lifters). Just tell him to PM me about how to do it.
Old 09-04-2012, 06:44 PM
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*******!

x2 on l92 top end swap
Old 09-04-2012, 08:45 PM
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Is that Vette m6? Isn't 385 low for a Bolton ls2 Vette? Good run though
Old 09-05-2012, 08:51 AM
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It was hot prolly 95 degrees cobra also has 3.90 gears. The vette will prolly be getting a very stout heads and cam combo real soon and cobra getting whippled when gets back from wyotech. The vette runs damn good
Old 09-05-2012, 11:10 AM
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Sounds like the Cobra has a slipping belt?
Old 09-05-2012, 11:19 AM
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a stage 1 ported blower with a 2.8 upper pulley with a factory crank pulley isnt as aggressive as people are making it out to be. Not to mention hes a savagely poor shifter. And there is no mention of the factory x pipe being replaced. Losing the cats on these cars is worth a solid 30whp. But either way. With a full exhaust... thats a 470ishwhp setup for the cobra. Vette is significantly lighter and more aero with a much faster shifter. Seems completely normal to me...
Old 09-05-2012, 11:26 AM
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I feel the vette should've walked him earlier. Why did the cobra let out as the vette started to pull?
Old 09-05-2012, 11:27 AM
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Originally Posted by HioSSilver
I feel the vette should've walked him earlier. Why did the cobra let out as the vette started to pull?
he sensed his inability to win up top is my guess.... its a ford thing... dont ask... i couldnt tell you why..
Old 09-05-2012, 01:08 PM
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exactly i didnt see anything wrong the reason the vette didnt pull at beginning is becuase he was in 3rd at 60 which isnt that good of a hit. it has a brand new belt on there we just put on a month ago due to the old one snapping. also if he goes up to like 6800rpm the supercharger just hits a wall and falls on his face now he started shifting right before that to keep it goin.
Old 09-06-2012, 09:41 AM
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Good runs, that is about right really, I'd love to run a ls2 or ls3 vette in my cobra but there just aren't any around my area other than a couple auto ls1s.
Old 09-06-2012, 09:51 AM
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Originally Posted by Sticks n Stones
what was the outside temps? I'm thinking that cobra was running hot as he should have walked you easily with just a pulley/basic boltons.

Now is the time to tell your buddy all about doing the LS3/L92 head and intake swap over on his LS2. By far the best upgrade you can do to a LS2 powered vehicle: power increase directly equivalent to dropping in 235 AFR heads/FAST intake but for a fraction of the cost (unported heads/intake $1200 with all gaskets needed, $700 more for ported heads/intake and ilifter trunnion upgrade along with LS7 lifters). Just tell him to PM me about how to do it.
Dang, I wish I knew this before. But I put ported stock 6.0 heads on for a 20 RWHP gain and they only cost me 300. I would like to get the ls3 combo as it would make a Big diff in my car as I still have stock ls1 valves. I make 406 on a Mustang Dyno on motor.



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