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#1
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Join Date: Jun 2010
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98 Mark VIII Heavy "Bolt Ons"
After insurance came through, I ended up with more than I could have sold my 98 gt for, so I'm happy.
Sooo, I got a very clean 1998 Lincoln Mark VIII ![]() ![]() ![]() ![]() The plans are as follows: Cobra intake and cams 4.10 gears Police Interceptor MMC driveshaft Now just to track down the parts!
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1998 Gt full pi swap -Dead and gone 1998 Mark VIII 4.30s, 125 shot, 93 d/s-Daily Driver 1998 BAB Cobra-Project |
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#2 |
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Regular
1970 Mercury Cougar.
Join Date: Nov 2009
Location: DFW, TX
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Awesome. Do yourself a favor, rip out the air ride BS and replace with coil overs. There is 0 ride quality difference and it eliminates a major headache. Also, toss on some chrome cobra R's and chop a coil off from the springs to lower it a bit.
I honestly wouldn't go with the Cobra cams, they don't add jack for power and it's too much trouble. The intake for sure. Also, get some short tube or long tube headers and a true 2.5" dual exhaust. The exhaust is the single biggest power killer on these cars, way too restrictive.
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1970 Cougar. |
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#3 | |
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The cobra cams have 10ish more degrees of duration. If i find a cobra shortbock (ahemm kimo), I will just take stuff I need off of that. I will be converting the exhaust later to true dual (off road x piped with flowmasters off my mustang) The intake is also restrictive as well. It has a resonator right next to the maf to silence whatever air is going into the engine. It will be replaced with I do the cobra manifold.
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1998 Gt full pi swap -Dead and gone 1998 Mark VIII 4.30s, 125 shot, 93 d/s-Daily Driver 1998 BAB Cobra-Project |
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#4 | |
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Regular
1970 Mercury Cougar.
Join Date: Nov 2009
Location: DFW, TX
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Most people dyno around 220HP to the wheels on a stock Mark VIII. In a 96 mustang with Cobra exhaust manifolds and an ORX pipe, a completely stock 97 motor put down 275 HP to the wheels. Granted that was going through a manual transmission, but you get the idea. Hell, say the auto is taking you down to 250HP, that is still a 30HP gain with stock manifolds and a high flow midpipe. That is what I call one restrictive exhaust.
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1970 Cougar. |
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#5 |
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MM Fanatic
2003 gt
5.4 32v on the way
Join Date: May 2007
Location: Omaha
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nice find, skip the gears, intake, and cams, find a cobra bracket and head unit and run some boost through it.
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2003 Mustang gt - usual mods - slowly working on 5.4 swap 2004 srt4 - Stock DD/winter beater Click here for your tuning needs Before asking a gearing related question click THIS link and enjoy all your saved time. |
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#6 |
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Regular
1970 Mercury Cougar.
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The gears are a must on these cars. They came with 3.08 base and 3.27 LSC. Nowhere near enough gear with an IMRC delete.
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1970 Cougar. |
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#7 | |
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Then its build time ![]() Of course all the work (except machining and balancing) will be done by me and posted on the forum. I'm surprised nobody has asked what an MMC driveshaft is.... lol
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1998 Gt full pi swap -Dead and gone 1998 Mark VIII 4.30s, 125 shot, 93 d/s-Daily Driver 1998 BAB Cobra-Project |
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#8 | |
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Am I just reading this wrong, or are you saying that a 1997 Mustang GT, with a NPI 2 valve 4.6 motor will make 275 rear wheel horsepower with just an offroad x pipe, and cobra manifolds? I thought headers, catback exhaust, intake, and tune on those put you at around 220-240rwhp? |
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#9 | |
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1970 Mercury Cougar.
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Location: DFW, TX
Posts: 210
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1970 Cougar. |
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#10 |
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Figured I was, it's just that since there was no mention made of it actually being a swapped 1997 Mustang I was like what the hell.
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#11 |
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MM Fanatic
2003 gt
5.4 32v on the way
Join Date: May 2007
Location: Omaha
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Here is an idea, before investing too much into cams and a manifold, consider a C head swap? Mark viii internals and transmission wont allow for the revs that the B heads need so you are stuck without power. Get hands on some C heads and a manifold and power should improve a fair amount.
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2003 Mustang gt - usual mods - slowly working on 5.4 swap 2004 srt4 - Stock DD/winter beater Click here for your tuning needs Before asking a gearing related question click THIS link and enjoy all your saved time. |
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#12 | |
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For now, I'm just looking to spend 800-1000 The aluminum driveshaft I'm swapping in would probably give more rwhp than a c head swap. I guess I'll bring the car to hooters for a full exhaust swap on monday because I'm having trouble finding a trashed 96-98 cobra block.
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1998 Gt full pi swap -Dead and gone 1998 Mark VIII 4.30s, 125 shot, 93 d/s-Daily Driver 1998 BAB Cobra-Project Last edited by majorownage; September 25th, 2010 at 12:08 PM. |
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#13 |
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*update*
just traded my PI swap for cobra intake cams and heads (circa 1998) Will take pictures when received
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1998 Gt full pi swap -Dead and gone 1998 Mark VIII 4.30s, 125 shot, 93 d/s-Daily Driver 1998 BAB Cobra-Project |
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LinkBack to this Thread: http://www.moddedmustangs.com/forums/4v-svt/184954-98-mark-viii-heavy-bolt-ons.html
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| Posted By | For | Type | Date | |
| Thread 98 Mark VIII Heavy | This thread | Refback | November 12th, 2010 10:53 PM | |
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