This is topic wats the diff. between cobra and 4.6 dohc mark VIII engine in forum Tech Talk at Northern California Ford Owners  .


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Posted by foxstang (Member # 7447) on :
 
wat is the diff. between a 96-98 cobra engine angd a mark VIII engine and wat is the hp diff
 
Posted by RiverCityAuto (Member # 7664) on :
 
The biggest difference the Cobra has a forged crank.... with 8 bolts...... and the MK VIII has a cast crank with 6 bolts.... the intakes are different and the exhaust cams are different... but you are looking at only about 10-15 hp difference.......
 
Posted by JohnB (Member # 969) on :
 
Timing cover, Intake, oil pan, crank, exhaust manifolds, exhaust cams, and a few other small items. You won't see a difference if the existing Cobra parts are swapped over.
 
Posted by foxstang (Member # 7447) on :
 
thanks for the info
 
Posted by 1fast281 (Member # 4670) on :
 
The timing cover is the same as the Cobra. 93-95 Mark VIII's don't have Beehive valvesprings, only 96-98 have them.

[ May 23, 2007, 08:27 PM: Message edited by: 1fast281 ]
 
Posted by foxstang (Member # 7447) on :
 
would it be hard putting in a 98 gt and would it be worth it
 
Posted by 1fast281 (Member # 4670) on :
 
Depends on what your plans are for the car.
 
Posted by foxstang (Member # 7447) on :
 
my cuzin was thinking of doin it cuz his motors messed up. i'm not sure wat he wants. he wants to switch to a 4vi and wants to run it n/a right know ang get some good power out of it. but right know its just an option until he figures out wats wrong with motor.
 
Posted by 1fast281 (Member # 4670) on :
 
You can get the MK8 motor cheap, it's worth it.
 
Posted by foxstang (Member # 7447) on :
 
yeah i thoght so too cuz i saw some for pretty cheap on ebay. wat ecu would u use.98 cobra or mark 8

[ May 26, 2007, 11:36 PM: Message edited by: foxstang ]
 
Posted by 1fast281 (Member # 4670) on :
 
If the 98 GT has an auto you need the Mark VIII ECU to control the 4R70W and the IMRC's, if not you can use the Cobra ecu.
 
Posted by foxstang (Member # 7447) on :
 
thanks for the info
 




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