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Author
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Topic: Compression on 2000 v. 96
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CustomFastbackCA
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Member # 1369
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posted
 
 
Did they raise the compression ratio in the 2000 4.6 from the 96 4.6 (2v) enough so that I would not be able to use my 10lb vortech blower on the new engine?
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www.CustomFastbackCA.com
1995 Dinan M3 Avus Blue Metallic
1967 GT Mustang Fastback (Eleanor)
Ask questions if you have'em, anyone who thinks they're too cool, know's it all, or doesn't want to look stupid has more problems than you.
Posts: 346 | From: Santa Clara | Registered: Jun 2002
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Joshs Ford
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Member # 801
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Yes, the 96-96 4.6L SOHC engines have lower compression ratios then the 99+ SOHC engines. The simplest reason is becuase of the PI heads.
Josh
Posts: 692 | From: San Ramon CA, | Registered: Jan 2002
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Joshs Ford
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Member # 801
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posted
as for 10lb's of boost, you might have to lower it down just a little bit, to 8-9, some will say you are completly fine, others will say lower it to 6lb's of boost. I think you will be fine as long as u have the fuel to support them.
Josh
Posts: 692 | From: San Ramon CA, | Registered: Jan 2002
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Andrew WOT
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Member # 1249
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quote:
Originally posted by Chico Stang:
Yes, the 96-96 4.6L SOHC engines have lower compression ratios then the 99+ SOHC engines. The simplest reason is becuase of the PI heads.
Josh
Actually the compression is the same because simultaneously they switched to dished pistons (technically 96-98 pistons were also dished but with smaller dish). But if you bolt PI heads on 96-98 block you'll get higher compression (10.5:1 area), perhaps this fact created some confusion.
Posts: 79 | From: Sacramento | Registered: May 2002
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Stimson
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Member # 51
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Didn't they also raise compression in '00 or '01 on the SOHC motors compared to the '99's? If so- anyone know from what to what did they raise it from?
Posts: 2373 | Registered: Jun 2000
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