Rebuilding the monster
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New User
Joined: Mar 2008
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Rebuilding the monster
Im a proud owner of a 99 F250SD V10 CC, with three spark plugs already spit out and time serted, im pulling the heads. Will my trucks computer be able to run the 05 three valve head? Is there a aftermarket cam for some good low end torque. Or any mods i can do to lets this monster breath?
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Not likely that your PCM will be compatible to the '05+ V10 3v. You would need the PCM with the heads...and even then it probably will not work. So many other variables involved.
IMO...scrap the '99 heads and install a set for a '00. That is when the PI head was introduced...which allows for better breathing. Of course...all things being equal...you should either replace or recalibrate your PCM for the newer heads.
Also...not worth adding after-market cams...unless you added the better flow PI heads.
Good luck...
biz
IMO...scrap the '99 heads and install a set for a '00. That is when the PI head was introduced...which allows for better breathing. Of course...all things being equal...you should either replace or recalibrate your PCM for the newer heads.
Also...not worth adding after-market cams...unless you added the better flow PI heads.
Good luck...
biz
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
What Biz said 
I don't remember if the '99 and '2000 pistons were the same, so if you're going to go to a PI head (2000-2004 F-series, 2000-up E-series and Excursions), make sure the pistons are the same, otherwise your compression may be way off.
The best thing to do? Port your existing heads, put inserts in all 10 holes and be done with it.
I remember many people on other forums saying that the 4.6/5.4 PI heads were not as good as a properly ported set of non-PI heads, but I'm not sure how that translates to the V10.
Get a set of good headers, and install them when you have the heads off
I think a good set of '99 heads with headers should be able to keep up with a 2000-up.
I don't remember if the '99 and '2000 pistons were the same, so if you're going to go to a PI head (2000-2004 F-series, 2000-up E-series and Excursions), make sure the pistons are the same, otherwise your compression may be way off.
The best thing to do? Port your existing heads, put inserts in all 10 holes and be done with it.
I remember many people on other forums saying that the 4.6/5.4 PI heads were not as good as a properly ported set of non-PI heads, but I'm not sure how that translates to the V10.
Get a set of good headers, and install them when you have the heads off
I think a good set of '99 heads with headers should be able to keep up with a 2000-up.
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by krewat
I remember many people on other forums saying that the 4.6/5.4 PI heads were not as good as a properly ported set of non-PI heads, but I'm not sure how that translates to the V10.
JL
Senior User
Joined: Oct 2006
Posts: 141
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Originally Posted by GlamisDude
Im a proud owner of a 99 F250SD V10 CC, with three spark plugs already spit out and time serted, im pulling the heads. Will my trucks computer be able to run the 05 three valve head? Is there a aftermarket cam for some good low end torque. Or any mods i can do to lets this monster breath?
Fleet Mechanic
Joined: Oct 2004
Posts: 1,394
Likes: 104
From: Southern KS
Johnny,
What is wrong with the intake? Ever since Ford went to port injection I thought the dry flow intakes were pretty good. Are the runner lengths too long for higher rpm hp? Is the TB opening too small for high rpms?
If anything I bet the restriction will be the TB or MAF before the intake design. The best way to fix that is to pressurize it. Ha Ha
What is wrong with the intake? Ever since Ford went to port injection I thought the dry flow intakes were pretty good. Are the runner lengths too long for higher rpm hp? Is the TB opening too small for high rpms?
If anything I bet the restriction will be the TB or MAF before the intake design. The best way to fix that is to pressurize it. Ha Ha
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by super 6.8
Johnny,
What is wrong with the intake? Ever since Ford went to port injection I thought the dry flow intakes were pretty good. Are the runner lengths too long for higher rpm hp? Is the TB opening too small for high rpms?
If anything I bet the restriction will be the TB or MAF before the intake design. The best way to fix that is to pressurize it. Ha Ha
What is wrong with the intake? Ever since Ford went to port injection I thought the dry flow intakes were pretty good. Are the runner lengths too long for higher rpm hp? Is the TB opening too small for high rpms?
If anything I bet the restriction will be the TB or MAF before the intake design. The best way to fix that is to pressurize it. Ha Ha
It's a long thread,with alot of factual information,and alot of assumptions by some folks,so be patinet and read it all.
http://forums.modulardepot.com/showthread.php?t=2634
There's another thread linked within that one that detailed the gains from intake only.
JL
