|
| Search | Car Forums | Gallery | Articles | Helper | Air Dried Fresh Beef Dog Food | IgorSushko.com | Corporate |
|
#1
03-28-2003, 10:39 PM
|
|||
|
|||
|
non PI head swap to Pi heads
has anyone had experience with a non PI head swap to the PI heads, never actually done it myself and have a buddy with a 98 GT that wants to do the swap, i figured i would ask and maybe someone here has done it....so let me know..
|
|
#2
03-29-2003, 03:51 PM
|
||||
|
||||
|
I never did it but I know in a back issue of 5.0 about 6 months ago thier was a big article about it.
__________________
R.I.P. Hypsi- Andy your one of the best people I ever had the priviledge to know. AF and the world has lost one of the truly wonderful people... 
|
|
#3
03-30-2003, 11:38 AM
|
||||
|
||||
|
Ya it was in Muscle Mustangs and Fast Fords. Didnt look like to hard of a swap.
__________________
More photos and Info/website! 1994 Cobra -off road h-pipe -superchips power chips -mac cold air induction -BBK aluminum underdrive pullies -pro-m 75mm bullet MAF -18" konig wheels with nitto 555 zr tires -Ford Racing 65mm throttlebody -Ford Racing king cobra clutch -Ford Racing 3:73 Gears -Ford Racing Aluminum driveshaft -Bullit suspension/ springs,shocks,struts -Aubrun HD limited slip Diff. 2002 subaru Impreza RS - stock 1989 Toyota pickup 4x4 -K&N 
|
|
#4
03-30-2003, 10:24 PM
|
|||
|
|||
|
yeah the actual physical part of the swap should be no problem, i have rebuilt a few 281's....just cant remember if the ehaust manifolds will work and if im going to need a pcm or a calibrated chip..little stuff like that, thanks guys:smoker2:
|
|
#5
04-15-2003, 08:27 PM
|
|||
|
|||
|
have been digging and found that all the heads are interchangable, all that is needed to make the PI head swap is the intake manifold from a newer year that fit the PI ports
http://www.musclemustangfastfords.co...MMFF_MixMatch/ also complete sets are available http://powerheads.com/ |
|
#6
05-17-2003, 03:26 PM
|
|||
|
|||
|
the swap is complete on the 98 Gt 4.6..used the 03 heads, a 99 intake,99 coolant tube( the one that goes down the center of the block)
also needed a new dipstck tube due to damage on removal, fyi if anyone is going to do this swap your compression will be raised to 10.3.1(regular unleaded is no longer an option due to the raised compression low rpm pinging under load was noticed, premium works fine) After completion the idle was a bit irratic.We solved that problem by having a dialbo chip programmed for this set up..on the dyno this car went from 212rwhp to 265rwhp, not bad a all if you want to keep your car naturally aspirated.. Total cost on my part for parts and gaskets needed was less than $1000, $950 actually.:sun: |
|
#7
05-25-2003, 12:42 AM
|
|||
|
|||
|
The 99+ heads have a 44.75cc combustion chamber. The 96-98 Gt's have a 10.5cc dish while the 99+GT's have a 18.5cc dish.
44.75+10.50 = 55.25cc. The total volume of the cylinder is 574.46cc + 55.25cc. Therefore, the compression ratio (excluding the head gaskets) will be 10.4:1, assuming the heads are dead on. Unfortunately, the 44.75cc rating is +1.5/-1.5cc. In other words, the true compression ratio could vary from 10.1:1, to 10.7:1. In other words, I'd recommend having the heads cc'd. 
__________________
2002 Mustang GT Coupe 1993 Yamaha FZR 600 |
|
#8
03-11-2005, 06:06 PM
|
|||
|
|||
|
pi head swap
About the head swap. I am performing as we speak and am having trouble with the oil dipstick tube. Does ANYONE know how to get the tube back in the block without tearing it apart. If you do thanks.
|
|
 |
POST REPLY TO THIS THREAD |
 |
|
|
