04-01-2011, 06:29 PM | #85 | |
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the Pedders Camaro did not under go any weight reduction, it weighed 4197lbs and it was close to setting track records. It was using 305's all the way around but running a square setup is ideal for road racing. |
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04-01-2011, 08:25 PM | #86 | |
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04-01-2011, 08:41 PM | #87 | |
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(example) 1st: 3.48 2nd: 2.33 3rd: 1.59 4th: 1.21 5th: 1.00 6th: 0.61 R: 3:33 Final Drive: 3:73 Fuel economy would bite.. but it would be very responsive and be light years ahead of the SS's TR6060 M10.... per lap... |
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04-01-2011, 08:48 PM | #88 |
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Make those Forgeline 19x9.5's fr/ 19x20 rr. Probably be around 10lbs lighter per wheel not counting the tires. You could feel the entire 3.73 gear ratio with 19's, even better with 18's but they wouldn't look right with a 30-35 profile inside the wheel wells.
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04-01-2011, 09:14 PM | #89 | |
I used to be Dragoneye...
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Then the gearbox gets tricky...because there would A) Have to be an existing unit with those gear ratios, that been approved by GM's powertrain people or B) have to be a newly-designed unit in coordination with Tremec to produce... If they decide to go ahead and build a Z28 in addition to the looming ZL1...it's not going to be a 4-month parts-bin extravaganza...imo, anyways... |
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04-01-2011, 09:55 PM | #90 | |
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and I don't think Tremec runs anything that steep so it would have to be something new, I will look into it tomorrow when I get up... |
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04-02-2011, 07:38 AM | #91 |
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The emissions are a B-word for the LS engines, the 430hp E-Rod was a 50 state miracle let alone 475hp. I did find a turnkey LS3 Marine engine that is legal and ready to run. It is SAE certified at 450hp but I am wondering if the engine is seeing gains from the shorter exhaust setup. A typical boat engine has short exhaust correct?
Anyway, emissions above 430hp start to get real difficult as i'm seeing it... here's the LS3 Marine engine.. |
04-02-2011, 07:47 AM | #92 |
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The LS3 376/480hp Hot Cam looks ready to run. Anyone know if its 50 states? What about VVT? when is VVT going to be ready for these engines? Is there a problem with the LS3/6060 with misfire detection when using VVT? I know active fuel management presents a problem with the manual. Looks like there would have to be bigger valve reliefs to do so, It also looks like VVT cannot handle hign pressure valve springs that a Hot cam requires. the phaser uses oil to change the cam timing with VVT and would interfere with the valve spring operation. If these changes are made, then the LS3 would be a different engine somewhat.. Maybe an LSZ lol. With VVT, its either go with a low pressure valve spring in which big cam guys would hate or find a happy medium so you don't blow the VVT cam phaser up. Does anybody know how a cam phase limiter operates? High pressure springs or dual springs can work if a cam phase limiter is used but it seems like a cheap fix and could limit VVT range of operation.
Anyway, here's the LS3 376, 480hp about 475tq. Last edited by thePill; 04-02-2011 at 08:21 AM. |
04-02-2011, 08:42 AM | #93 |
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Now for the transmission, 1st let me say that Tremec's website blows, none of the TR6060's are on there because each specific gearset (MH3, M10, MG9 ect) has been developed for a specific engine (LS9, LS3, LSA ect). The only stats they have are for the the TR6060's predecessor the T56. The 6060 is the same transmission as the T56 (gearbox) but major internal beefing has been done and I believe the tailshafts have been beefed up too. Below, you can see (In Green) the only T56 that carries a decent 1st gear ratio of 3.36 but it still has a 5th gear overdrive (lame). It is kind of heavy for a T56, once in 6060 form it would be over 149lbs. Also, the torque capacity is 350 and that is a maximum torque capacity, NOT a sustained measurement. If we are going to build a new Z28 engine, then we would have to request that Tremec build a new TR6060 and without some kind of fuel saving measure (AFM, VVT) a double overdrive would be needed... even in a production Z28.
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04-02-2011, 08:48 AM | #94 |
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The LS3 as is would be fine, just add SS exhaust manifolds and dry sump.
CTS-V brakes, same weight, better performance. Pedders coilovers (-15lbs) High durometer bushings (eF! NVH) Light wheels (-25 lbs) Recaro front seats (-25 lbs) Removable back seat (-15 lbs?) Mod fuel tank pickup & smaller tank (-7+lbs per gallon) close ratio gearbox or 4.1+ rear gear ratio A/C delete... yeah right (-50 lbs) Radio delete (-10 lbs) Sound deadening delete and light carpet (-20 lbs?) ...I have more, credit to number3 for some good suggestions
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04-02-2011, 08:57 AM | #95 |
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True, they have to keep their avg. MPG up across the board. Could get away with a GM approved diff center section thru GMPP
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04-02-2011, 10:49 AM | #96 |
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04-02-2011, 10:56 AM | #97 |
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Embed FAIL about pwning ... you get 4
...Is this you? hmmm?
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04-02-2011, 11:46 AM | #98 |
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