My LS7 results
07-17-2010, 05:51 AM
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My LS7 results Might create a bit of discussion, finished my 427 and been on engine dyno all today.... basics are 427ci, LS7 heads, 11.7 to 1, hydraulic roller, 248@ 0.050, 1.875 primary pipes with merge collector, T&D shaft 1.8 rockers, etc etc, GMPP intake manifold with carby and MSD ignition controller..... made 686hp @ 6700rpm and 585ft/lbs @ 5300rpm on gasoline and 705hp @ 6650 rpm and 613 ft/lbs at 5250rpm on alcohol, didnt really chase it much with alcohol, but done it easy with a safe tune.
07-17-2010, 06:54 AM
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VERY nice my friend! Congrats! Do you have any videos of it? I am kinda on the fence between going N/A or FI...is this supposed to be a street duty motor as well? Thanks!
07-17-2010, 06:59 AM
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Yes Dave, will be used as a street motor, going in my VE SS Commodore which is the G8 Pontiac where you are, I have a video and pics, will try and post them..... Garry
07-17-2010, 07:31 AM
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07-17-2010, 08:55 AM
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427 Nice Gaz...I have a tall deck Warhawk and am still trying to decide bore/stroke combos. I am shooting for 700 HP...your combo makes my decision a little easier..thx!
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07-17-2010, 05:47 PM
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The heads are GM cnc ported but we did improve them, intakes were ok and cross sectional areas ok, but the exhaust needed some work, mainly in the throat area, exhaust now flows 70% of intake @ .600 was nowhere near that before. Intakes are now 379cfm on our bench, there is still plenty of potential in the heads yet, just feeling my way at the moment. Cam has .673 lift on the intake and .668 on the exhaust. The dyno costs around 700 AU per day here.
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07-21-2010, 06:22 AM
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Time to buy the torque convertor, have spoke to Dave at Yank Convertors, seems like he knows his stuff, any advice??? what are you guys using there? thanks Gaz.
VERY NICE
07-21-2010, 05:59 PM
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07-21-2010, 06:04 PM
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