Dyno'd my Mark VIII December 30, 2007, 03:05:51 PM The Car, a 1995 Mark VIII LSC: The hard numbers: * Stock: 232hp, 232lb-ft (approx) * Headers, exhaust, modified intake and gutted MAF from junkyard: 246hp, 265lb-ft(the red curve) * All of the above + SCT tune: 262hp, 279lb-ft (the blue curve)The funny thing is, the car feels slower because the powerband is smoother. I gained 20lb-ft of torque below 4000rpm and it really shows when you give part throttle to pass on the highway. Not to mention the transmission shifts are quicker, but never harsh. Well actually the 3-4 shift at 115 mph was kinda harsh...but I won't be doing that very often. The moral of the story is: chip and tune your daily driver, you won't regret it. :) Quote Selected
Dyno'd my Mark VIII Reply #1 – December 30, 2007, 03:19:07 PM I wanna see videos.Those are pretty good stock numbers, most ive seen are in the 215-220hp range stock. Quote Selected
Dyno'd my Mark VIII Reply #2 – December 30, 2007, 03:23:50 PM Nice car and numbers, I've gone through wanting alot of different cars this year but I think I want one of these! Been looking at them online alot in the past 3 or 4 months . Still keeping my 88. Nice car! Quote Selected
Dyno'd my Mark VIII Reply #3 – December 30, 2007, 03:41:39 PM Thanks guys!Yeah, I'm not selling my 88 Cougar for anything either. But now I have a DD that has some safety features (airbags, ABS) and looks somewhat modern and turns heads for all the right reasons. The stock HP figures weren't from a dyno, I would also expect 220hp at the wheels, but the LSCs had 290hp and that's the number I got when I added a 20% friction loss through the wheels.Either way, I love it. SCT rules. I can't wait to get the trac-lok installed and hit the drag strip again. It ran 14.9@95 when stock. I hope/wish/pray to trap 100mph this time. Quote Selected
Dyno'd my Mark VIII Reply #4 – December 30, 2007, 07:53:27 PM I have always loved those cars, might get me one someday too.Nice Car and decent numbers too. Quote Selected
Dyno'd my Mark VIII Reply #5 – December 30, 2007, 08:48:26 PM The engine is rated at 290hp. You lose 58hp through the drivetrain?My '98 LSC felt fast but not as fast as I thought it should. Quote Selected
Dyno'd my Mark VIII Reply #6 – December 30, 2007, 08:50:18 PM you put headers on that. i bet that was a good time. numbers look good! figure about 18% loss through the drivetrain. i never realy understood why that worked but it does. why would the same drivetrain take away a certain percentage reguardless of engine power instead of a fixed ammount? Quote Selected
Dyno'd my Mark VIII Reply #7 – December 30, 2007, 08:59:48 PM Impressive torque gains! Quote Selected
Dyno'd my Mark VIII Reply #8 – December 30, 2007, 09:15:15 PM Quote from: xjeffs;195070The engine is rated at 290hp. You lose 58hp through the drivetrain?My '98 LSC felt fast but not as fast as I thought it should.20% loss is commonplace for automatic transmissions. I seriously doubt this car is any different. I usually do 15% for manuals, except the T-56 in Corvettes...those guys insist on 17%. The 97-98s are complete turds compared to the older ones. (no offense) The fastest are the 1993-1994s, the 1995s (OBD I) are faster than the 1996s (OBD-II, don't know why but they neutered it), and they are all better than the 1997-98s (py intakes).shame302: no I didn't install them, I had the same guys who did the tune install them and make me a 2.5" exhaust from a buttload of mandrel bent tubing and a TIG welder. :) Quote Selected
Dyno'd my Mark VIII Reply #9 – December 30, 2007, 09:54:20 PM My mom had a 1994 Mark VIII with the 4.6 and that car would MOVE. Very quick car. Yours is lookin good :) . Quote Selected
Dyno'd my Mark VIII Reply #10 – December 31, 2007, 09:43:58 PM nice ride i want a LSC any year would be nice but i kind of want the 97-98 body. Quote Selected
Dyno'd my Mark VIII Reply #11 – January 01, 2008, 01:29:58 AM QuoteI usually do 15% for manuals, except the T-56 in CorvettesThat's because 'Vette #'s are inflated! :p Quote Selected
Dyno'd my Mark VIII Reply #12 – January 05, 2008, 11:30:26 PM Quote from: V8Demon;195272That's because 'Vette #'s are inflated! :pBe nice, I'm putting a T-56 in my Cougar. :) :p Quote Selected
Dyno'd my Mark VIII Reply #13 – January 06, 2008, 07:18:10 AM That wasn't a dig at the T-56. They use it on other cars and the 15% rule seems to work with the other cars.....Although I don't know if and what the differences are for a 'Vette T-56. Quote Selected
Dyno'd my Mark VIII Reply #14 – January 06, 2008, 09:12:43 AM Quote from: V8Demon;196011That wasn't a dig at the T-56. They use it on other cars and the 15% rule seems to work with the other cars.....Although I don't know if and what the differences are for a 'Vette T-56.I know, I'm just messin around. :)Actually I think all T-56s are closer to 17%, after talking to John Lingenfelter's son-in-law who runs one of his shops. They dyno so many T-56 cars and they are the most honest people around. (hence why their cars aren't the most aggressively tuned)It makes sense to tell everyone its 15%, that's good for business. But LPE doesn't lie to people. I like that. Quote Selected
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