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#1
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If you had a 400HP engine........
What would your transmission options be? Could you have LAN rebuild the stock tranny and use his latest TCU code or would that still not be good enough to handle the HP? What realistic options exist that could handle the HP? I'm talking about options that wouldn't require massive modifications to get the tranny to fit and mount.
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Tony 1996 Polo Green Subaru SVX LSi, 168,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 5W50 FS (3qt) and 5W30 High Mileage (4qt) Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, Centric Rotors, Power Stop Evolution Carbon Fiber Ceramic Brake Pads 2005 Gray Acura RL, 165,XXX miles, Redline D4 ATF with Lubegard Platinum Protectant, Mobil 1 5W20 High Mileage Extended Performance Oil 2009 Red Toyota Venza, 123,XXX, Mobil 1 5W30 High Mileage Oil 1992 Red Ferrari 348 ts, 82,XXX, Redline everything |
#2
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Re: If you had a 400HP engine........
Is a manual conversion considered too large a modification? A early 2007 6MT would be my choice for that kind of power level.
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl |
#3
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Re: If you had a 400HP engine........
The problem with the auto's under that much power seems to be that the front diffs tend to fail before anything else. The fully built trans can handle it, and the diff handles it for awhile, but over time, the stress, especially if the car is being used at the strip, takes it's toll. A built auto with a higher geared final drive would make a big difference since there are less teeth on the pinion gear which means each tooth is thicker, meaning it can withstand more torque, stress, etc. (4.44)
Other than that, the best option really seems to be a 6 spd. After all, the Shadow Machine has held up over quite awhile now in all different circumstances, and has never been treated "nicely" |
#4
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Re: If you had a 400HP engine........
6-speed. I have seen the gears, they're massive.
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#5
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Re: If you had a 400HP engine........
Quote:
Once the weather breaks, though, may God have mercy on its soul...
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Disclaimer: The above post is on the internet. Last edited by LetItSnow; 06-17-2011 at 12:14 PM. |
#6
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Re: If you had a 400HP engine........
Reading put the most stress on that transmission. I should know...I contributed
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#7
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Re: If you had a 400HP engine........
My plan with the LGT are to take a RS 5 mt tranny and tear it down and build it. A lot less to have to swap for a 6 speed conversion and will handle over 500 hp! I might have that with a turbo build down the road.
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#8
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Re: If you had a 400HP engine........
build automatic for dragracing/daily driving, 07-09 Spec-B 6spd for mixed normal driving/light track days, STi 6spd with DCCD for more hard core stuff.
The STi 6spd preference will also depend on car setup and desired use. 04 has very agressive front LSD, 34/66 split (dyno says its really more like 20/80 before center diff lock up) 05 has a more sane front diff, same 34/66 split, but oem DCCD auto mode is better. 06 gets a 41/59 split. 07 gets new better ratio pattern and torsen rear LSD. If you like the Spec B's tall ratios, the JDM forester XT uses them also, but has a front limited slip unlike our SpecB. Dunno about their legacy. Oh and the 2010+ legacy 6pd is based on the old 5spd, but past that I know little. |
#9
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Re: If you had a 400HP engine........
Quote:
I should have also asked what the final drive ratios are for these various options.......... You will see where I am going with this soon. I want to gather information and then I will post some calculations.
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Tony 1996 Polo Green Subaru SVX LSi, 168,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 5W50 FS (3qt) and 5W30 High Mileage (4qt) Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, Centric Rotors, Power Stop Evolution Carbon Fiber Ceramic Brake Pads 2005 Gray Acura RL, 165,XXX miles, Redline D4 ATF with Lubegard Platinum Protectant, Mobil 1 5W20 High Mileage Extended Performance Oil 2009 Red Toyota Venza, 123,XXX, Mobil 1 5W30 High Mileage Oil 1992 Red Ferrari 348 ts, 82,XXX, Redline everything |
#10
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Re: If you had a 400HP engine........
Quote:
If you're going to spend a ton of time/effort on the engine, use the right transmission for the job.
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#11
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Re: If you had a 400HP engine........
i did, it was called an evo 10 =>
440 hp is pretty easy in an evo, with minor bolt ons transmision solid as a rock=> keep ths svx clean and original, and leave the performance factor to another car,
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2008 evo x with sss package 430 hp 380 torque stock turbo with basic bolt ons 12.56 @ 109 fully weighted 3,500 lbs |
#12
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Re: If you had a 400HP engine........
Boooo!
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#13
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Re: If you had a 400HP engine........
It's true; big power SVXi are simply no fun.
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Disclaimer: The above post is on the internet. |
#14
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Re: If you had a 400HP engine........
Well that's disheartening.
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"That which can be asserted without evidence can be dismissed without evidence." '92 Dark Teal SVX LS-L, >146,000m 3 pedals, 5 speeds., restoration underway. 2012 Honda Insight, slow but cute. |
#15
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Re: If you had a 400HP engine........
I hope you're being sarcastic.
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
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