This is topic Stock Compression in forum Tech Talk at Northern California Ford Owners .
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Posted by stateokunfusion (Member # 5439) on
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HEy guys what is the stock compression on a 88 GT 5.0
Is 10:13:1 too high to run pump gas?
What makes the compression? Is it the pistions or is it...?
Posted by 89 FAKE SNAKE (Member # 4531) on
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i think stock is 9.5...and i have 10.5 and run 91...but mostly goin to run 100..but ya is 10.5 to high for pump gas?
Posted by Motorhead6T5 (Member # 4969) on
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The piston dome/dish,the combustion chamber on the heads,and the Cubic inches all effect the compression ratio. I think stock is 8.5-9:1,but its been so long I can't remember. You could run all the way up to about 11:1 on pump gas if your tuned correctly.
Posted by cheap (Member # 858) on
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If you have a chiltons it's in the book at one of the end of the chapters.
Posted by AJBlackGT (Member # 3936) on
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You should be able to get away with 11:1 especially if you have aluminum heads and a good tune.
Posted by stateokunfusion (Member # 5439) on
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Will the increase in compression give me a good HP boost?
Posted by CDT (Member # 5004) on
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you have to figure out your dynamic compression to really see what you can run.
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