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View Full Version : PI heads question ?????????


stryker
06-13-2011, 12:46 PM
Ok Marauderers, here's my doubt to present to all. when the Panthers start to comes with PI heads ? I need to know because I heard that 2000 Panthers don't have PI heads, answers are very welcome please mangs. :burnout:
SC Cheesehead
06-13-2011, 01:08 PM
Ok Marauderers, here's my doubt to present to all. when the Panthers start to comes with PI heads ? I need to know because I heard that 2000 Panthers don't have PI heads, answers are very welcome please mangs. :burnout:

If gdmjoe doesn't respond to this post, send him a PM, he's very knowledgeable on all things Panther.
RF Overlord
06-13-2011, 01:17 PM
Also try JohnE.

I think PI heads came out in '01, but one of those guys will know for sure.
ctrlraven
06-13-2011, 01:41 PM
If you have to change the heads I believe you'll need to change the intake as well. It's a good upgrade if you can find the parts cheap and someone to do the work cheap as well.
RF Overlord
06-13-2011, 02:34 PM
If you have to change the heads I believe you'll need to change the intake as well. I do believe you are correct, sir.
ctrlraven
06-13-2011, 03:40 PM
Link to a nice write-up about it
http://www.stangnet.com/mustang-forums/717166-pi-headswap-write-up.html
LANDY
06-13-2011, 04:20 PM
I don't think panthers came with PI heads but mustangs did since '99.
TFB
06-13-2011, 05:56 PM
I don't think panthers came with PI heads but mustangs did since '99.

Panthers got PI heads begnning in '01...
LANDY
06-13-2011, 06:54 PM
Panthers got PI heads begnning in '01... good to know, this is the answer to all the questions. Thanks
yjmud
06-14-2011, 06:31 AM
+1 on tfb 01 is the first year for the panther to have pi heads
Bradley G
06-14-2011, 07:42 AM
Probably the most common hard part mod for pre 01 Panthers
gdmjoe
06-14-2011, 08:23 AM
PM Re:(ply) that was sent last night .....

In the Panther ( Crown Victoria / Grand Marquis / etc. ) the heads were not PI ( Performance Improved ) until 2001.
http://moldyrabbit.com/liquid/power_chart.jpg
*Courtesy of Liquid.

Here are a couple of articles that will provide more than enough information to answer all of your what's-the-difference questions ...
The Ford 4.6L (281 CID) Engine (http://www.therangerstation.com/Magazine/Summer2010/Ford_4-6.htm) ллл -click-

Rebuilding the Ford 4.6L (http://www.enginebuildermag.com/Article/3541/rebuilding_the_ford_46l.aspx) ллл -click-