Decking gt40 heads?
09-07-2009, 09:53 PM
3rd Gear Member
Thread Starter
Join Date: Mar 2006
Location: Harleysville PA
Posts: 956
Decking gt40 heads?
Does anyone deck or mill their gt40ps down to bump compression. Im not sure what it is stock. How much could I take off?
09-07-2009, 10:45 PM
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gt-40P's already run higher compression that stock. they have a ~59cc chamber which (on a stock shortblock) makes around 9.5:1
09-07-2009, 10:47 PM
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Location: new jersey
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im only milling mine to give them a fresh mating surface for the head gasket
09-07-2009, 10:54 PM
3rd Gear Member
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Join Date: Mar 2006
Location: Harleysville PA
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59cc, so what is the stock E7 comb. chamber size? If it will be at 9:5:1 ill just leave them alone.
09-07-2009, 10:59 PM
FudgeDrip
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a friend of mine is running gt40s that have been milled so much that the valves won't let the deck surface lay flat on a table.
09-08-2009, 12:13 AM
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Location: las vegas, nv
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Quote:
Originally Posted by
JayBanion
59cc, so what is the stock E7 comb. chamber size? If it will be at 9:5:1 ill just leave them alone.
i believe stock is 64cc and 9:1 cr
09-08-2009, 06:37 AM
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Quote:
Originally Posted by
luckythirteen13
i believe stock is 64cc and 9:1 cr
i thought stock compression was 8.5:1
09-08-2009, 09:10 AM
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Quote:
Originally Posted by
HACKGT350
i thought stock compression was 8.5:1
Nope... 9:1
09-08-2009, 09:14 AM
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Join Date: Dec 2006
Location: Citrus County, FL
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Quote:
a friend of mine is running gt40s that have been milled so much that the valves won't let the deck surface lay flat on a table.
good luck getting the intake to line up
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289 ,
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Decking gt40 heads?
