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<blockquote data-quote="tt335ci03cobra" data-source="post: 12539639" data-attributes="member: 68944"><p><img src="http://img.tapatalk.com/d/12/12/21/nu6yjejy.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://img.tapatalk.com/d/12/12/21/6e2a7y8u.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>-9.2/1 Kellogg crank, manly rods/pistons </p><p>-arp studs, gaskets, </p><p>-mildly improved stock 03 cobra heads and cams, valves, etc.</p><p>-canton 7 qt, catch can/drain back</p><p>-dual in/out twin oval 4" inlet cold side with 65* iats after an hour of dyno tuning. Hit 70* iats after 2 hours. </p><p>-2.5" down (horribly too small)</p><p>-twin 57/48's (terribly small hotside)</p><p>-920wtq but the hotside's and 2.5" turbo back choke it to 885whp.</p><p></p><p></p><p></p><p>It's the 48mm hot sides on the 57's that are holding it back coupled with the puny 2.5" down pipes. It'll pick 150whp+ with the 61/60's and 3-3.25" turbo back we're planning to do in 2-3 months. It made 860whp on 16psi and 91 octane (4500ft altitude, no 93 octane either hurts). </p><p></p><p>It's so torquy now that I'm running a 3.08 rear and 28" tall drag radials. I have viper 5th/6ths and it pulls adequately from 1400rpms at 50-80 in either overdrive. (.74,.50) On the dyno we have to ramp into power in 4th around 3500rpms because if we just hit it wot rom 2000rpms, it's spins around 3200 when it pulls 18psi and messes up the pull. In other words it makes much more low end torque than the pulls show, the na mill made 400+whp at 1900rpms till about 4500 then tapered off slightly till redline.</p><p></p><p>The cool thing is it makes 850-885 from 4800 or so till well past 6500 so it's kinda easy to pull on stringy powerband cars like 950whp supra's that only hit it 200rpms before redline but fall to 750whp every time they shift gears.</p><p></p><p>With the 3.08 it goes from 50-100 just in 2nd from around 3800rpms till 6800 or so and it's just like 50-80-100 kinda instantly, it's hard to explain. </p><p></p><p>I'm hoping the 61/60's still have flat plateau power from 5400-6500+ because I love staying in 3rd and going 100-140 in 3rd. I might go 60/58's if I have to to keep that rev range</p><p></p><p>It was tuned with 3.55's though so it'll lose 10-15whp in the read out now vs these numbers but its just the mechanical maths, not really an actual change.</p></blockquote><p></p>
[QUOTE="tt335ci03cobra, post: 12539639, member: 68944"] [IMG]http://img.tapatalk.com/d/12/12/21/nu6yjejy.jpg[/IMG] [IMG]http://img.tapatalk.com/d/12/12/21/6e2a7y8u.jpg[/IMG] -9.2/1 Kellogg crank, manly rods/pistons -arp studs, gaskets, -mildly improved stock 03 cobra heads and cams, valves, etc. -canton 7 qt, catch can/drain back -dual in/out twin oval 4" inlet cold side with 65* iats after an hour of dyno tuning. Hit 70* iats after 2 hours. -2.5" down (horribly too small) -twin 57/48's (terribly small hotside) -920wtq but the hotside's and 2.5" turbo back choke it to 885whp. It's the 48mm hot sides on the 57's that are holding it back coupled with the puny 2.5" down pipes. It'll pick 150whp+ with the 61/60's and 3-3.25" turbo back we're planning to do in 2-3 months. It made 860whp on 16psi and 91 octane (4500ft altitude, no 93 octane either hurts). It's so torquy now that I'm running a 3.08 rear and 28" tall drag radials. I have viper 5th/6ths and it pulls adequately from 1400rpms at 50-80 in either overdrive. (.74,.50) On the dyno we have to ramp into power in 4th around 3500rpms because if we just hit it wot rom 2000rpms, it's spins around 3200 when it pulls 18psi and messes up the pull. In other words it makes much more low end torque than the pulls show, the na mill made 400+whp at 1900rpms till about 4500 then tapered off slightly till redline. The cool thing is it makes 850-885 from 4800 or so till well past 6500 so it's kinda easy to pull on stringy powerband cars like 950whp supra's that only hit it 200rpms before redline but fall to 750whp every time they shift gears. With the 3.08 it goes from 50-100 just in 2nd from around 3800rpms till 6800 or so and it's just like 50-80-100 kinda instantly, it's hard to explain. I'm hoping the 61/60's still have flat plateau power from 5400-6500+ because I love staying in 3rd and going 100-140 in 3rd. I might go 60/58's if I have to to keep that rev range It was tuned with 3.55's though so it'll lose 10-15whp in the read out now vs these numbers but its just the mechanical maths, not really an actual change. [/QUOTE]
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