Engine Compression with PI Swap 1996 Mustang GT - Ford Mustang Forum
 
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post #1 of 2 (permalink) Old 04-12-2010 Thread Starter
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Engine Compression with PI Swap 1996 Mustang GT

Hey guys I am working on the PI Swap on my 1996 Mustang GT but I have a couple questions. First off my car has 120XXX miles on it and I was told that with these miles I will not get the engine compression that I should. People have told me that the pistons may be warn out and will effect my engine compression. Is this true? If so can I get some know piston heads to get the compression back? What kind of piston heads should I get? Also I got some comp cam stage 1 cam shafts but I have a bolt issue. The PI heads that I got have the stock cam shafts and cam shaft gear wheels. When I tried putting the gear wheel on my new cam shafts the gear fit perfectly but the bolt that holds the gear in place with the camshaft does not fit. I have called summit racing to see if they got a bolt that will fit but they gave me a part number to give to a ford part store. I did that but ford does not have that bold. Does anyone know where I could get a bolt for the camshaft. Thanks for your time.


1996 Mustang GT (Sold to my brother to keep it in the Family)
2004 Mustang Mach 1
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post #2 of 2 (permalink) Old 04-12-2010
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10.4:1 roughly is the compression ratio for a PI swapped car. As long as the engine is in good running order, had good compression before the swap, and is well maintained, 120k miles and the 4.6 is just starting to get broken in.


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