V10 heads
Cargo Master
Joined: May 2002
Posts: 3,271
Likes: 229
From: Gulf Coast, FL
They made some changes to the cam profile as well as the PCM program. This has been looked at before and you would better off trying to swap in a complete motor & assoc. parts.
I can't remember the year they changed the HP&TQ ratings. As long as your truck falls within that change you should be okay to swap heads. Any early 99 or 99.5 cannot be have the heads swapped. You can look at the motor and there will be a PI (performance inhanced) casted in the heads/block on the higher HP motors.
I can't remember the year they changed the HP&TQ ratings. As long as your truck falls within that change you should be okay to swap heads. Any early 99 or 99.5 cannot be have the heads swapped. You can look at the motor and there will be a PI (performance inhanced) casted in the heads/block on the higher HP motors.
Cargo Master
Joined: May 2002
Posts: 3,271
Likes: 229
From: Gulf Coast, FL
The parts may be the same in all V10s but the PCM and cams may make the difference. You would need to check part numbers between the years to find what is different between the motors.
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Posting Guru
Joined: Mar 2002
Posts: 2,245
Likes: 16
From: Vancouver Wash USA
Originally Posted by jhemr
Have a '99 V10, want to know if I can put a set of
heads for an '02 or newer on it without any problems ?
heads for an '02 or newer on it without any problems ?
Here's a guy with an older motor that with just a few mods, made 337 rear wheel hp in his Mustang; http://www.highlander.stangnet.com/v10.htm Ken
Last edited by ken04; Jun 21, 2004 at 02:37 PM.
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Elder User
Joined: Feb 2004
Posts: 946
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From: Orange
I think that it's basically the same as doing a PI swap on the 4.6 Mustangs. The heads, cams, manifold, and PCM must all be swapped. The actual combustion chamber on PI heads is is much smaller. The PI heads also flow better than the standard ones. I'm not sure, but I believe the intake port shape might also be different on PI heads as well.
Laughing Gas
Joined: Jan 2004
Posts: 1,142
Likes: 2
From: Denver, CO
Muscle Mustangs & Fast Fords did a 4.6 PI vs non PI story. With a little work the non-PI heads out flowed the PI heads. So the same should be true for the V10. But like someone else said just go with a SC or other up grades. I don't like to dig into a motor unless there is something wrong with it. My 2 cents on the subject.
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