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Old 06-05-2007, 10:03 AM   #11
QWKSNKE
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Originally Posted by 88 Sleeper Coupe View Post
Lol so whats the answer? I got mixed oppinions. So just a HO or upgraded like b303 cam and changing the firing order of the distributor would convert it to HO?
cam swap is all you have to do
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Old 06-05-2007, 11:46 AM   #12
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sweet.. well i guess im gonna try to organize picking it up sometime then.. i'll go ahead and call the guy..

hey even though its not HO would it be forged bottom end since its a 1990 motor?
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Old 06-05-2007, 04:29 PM   #13
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Originally Posted by 88 Sleeper Coupe View Post
sweet.. well i guess im gonna try to organize picking it up sometime then.. i'll go ahead and call the guy..

hey even though its not HO would it be forged bottom end since its a 1990 motor?
I am not sure if it would be the same internals as a 90 mustang 5.0. For example I dont think the lincolns mark vii's came with forged pistons.

I am not correcting but want to make sure you arent misinformed. The mustangs didn't come with a forged bottom end in the 5.0's, only forged pistons. I believe the rods and crank were still cast pieces. In fact the only mustangs that I know of (I could very well be mistaken though) that came with a complete forged bottom end were the 03-04 cobras.
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Old 06-05-2007, 04:46 PM   #14
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In fact the only mustangs that I know of (I could very well be mistaken though) that came with a complete forged bottom end were the 03-04 cobras.
I believe that is correct.
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Old 06-05-2007, 05:19 PM   #15
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Originally Posted by Italian LX View Post
Yeah, you're right. I was thinking I had read somewhere that the cylinders actually hit in a different order on the crank, but I was apparently mistaken.

Yes, all you would need to do is swap cams and rewire the plugs.
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Old 06-05-2007, 08:05 PM   #16
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I am not sure if it would be the same internals as a 90 mustang 5.0. For example I dont think the lincolns mark vii's came with forged pistons.
I don't even know that
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Old 06-06-2007, 07:39 AM   #17
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well thats what I meant forged pistons... think they're forged?

So only thing different in this motor is gonna be the cam? even if its hyper bottom end it'll have just as much or more power output if I just swap in a b cam? and based on qwksnake I won't have to change the firing order of the plugs?
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Old 06-06-2007, 09:17 AM   #18
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3v's are slow
 
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b cam = ho firing order
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Old 06-06-2007, 11:42 AM   #19
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Mark lower end is the same, not sure about the Grand Marquis
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Old 06-09-2007, 07:30 PM   #20
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You will also have to get a custom chip. The firing order is different, therefore the EEC will not work the way it is programmed.

You can either re wire the injector harness or get a chip. As for the crank it is the same on both HO and Non HO. All you need is the CAM and the chip.
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