Ported E7 Or Stock gt40s

06GreenMachine · January 9th, 2012, 05:58 AM

So you think different heads cant give you slightly different power curves like anything else? But its cool im done on this thread. The OP's question was answered.

StangBanger302 · January 9th, 2012, 07:16 AM

You can get more power out of head A than you can out of head B if head A has more flow in the lower lift numbers....but that's only if everything is matched accordingly. Normally, a gt40 head will flow more cfms in the .200-.300 area opposed to even a ported E7.

nolife · January 9th, 2012, 12:33 PM

Dyno-Proven Small-Block Ford Performance - Richard Holdener - Google Books

Seems to be a direct before and after test between E7 and GT40 heads although this was not a stock cam and not EFI which will skew the results.

rockylammon · January 10th, 2012, 03:55 PM

thanks for ALL the comments... didnt mean to start so much crap! ive always been into gm's. this is my first mustang, so some things may sound dumb to some "experts"!!
the guy doing my machine work said after the e7's are ported they will "pretty much" flow as well as the gt40's! he was trying to save me a lil bit of $ for the time being becouse im going to go with a set of world product heads.... but thanks for all your advice

StangBanger302 · January 10th, 2012, 04:21 PM

World heads? They can be ported to flow nicely...but stock they aren't great. The Jr.s OR the Sr.s. I suggest getting used aluminum heads because pretty much any aftermarket aluminum head is going to be as good or better than the World castings. Plus, it will knocked an easy 50 pounds off of your nose.

ryanw · January 10th, 2012, 04:24 PM

The world product sr heads recomend 9.5.1 or higher compressionto see full power from them, thats what the direction on mine said before i sold them

January 9th, 2012, 05:58 AM	#21
06GreenMachine Regular 06 mustang GT 12.8 Join Date: Aug 2008 Location: Pennsburg, PA Posts: 310 iTrader: 0 reviews	So you think different heads cant give you slightly different power curves like anything else? But its cool im done on this thread. The OP's question was answered. __________________ 2006 Mustang GT 5-Speed,4:10 gears, Predator cold air and tune, SLP loudmouth exhaust,kooks LTs and Xpipe 275 street tires, FRPP hot rod cams, mgw STS, 1/2 inch drop,285drag radials, Steeda UDP's, 100 shot.

January 9th, 2012, 07:16 AM	#22
StangBanger302 Hardcore Enthusiast 1992 Mustang LX 13.0 @ 105 Join Date: Jun 2010 Location: New York Posts: 2,230 iTrader: 0 reviews	You can get more power out of head A than you can out of head B if head A has more flow in the lower lift numbers....but that's only if everything is matched accordingly. Normally, a gt40 head will flow more cfms in the .200-.300 area opposed to even a ported E7. __________________ As I lay rubber down the street I pray for traction I can keep But if I spin, and begin to slide Please dear God, protect my ride

January 9th, 2012, 12:33 PM	#23
nolife MM Fanatic 91GT, 88GT, 02GT Join Date: Dec 2006 Posts: 3,057 Blog Entries: 3 iTrader: 0 reviews	Dyno-Proven Small-Block Ford Performance - Richard Holdener - Google Books Seems to be a direct before and after test between E7 and GT40 heads although this was not a stock cam and not EFI which will skew the results. __________________

January 10th, 2012, 04:21 PM	#25
StangBanger302 Hardcore Enthusiast 1992 Mustang LX 13.0 @ 105 Join Date: Jun 2010 Location: New York Posts: 2,230 iTrader: 0 reviews	World heads? They can be ported to flow nicely...but stock they aren't great. The Jr.s OR the Sr.s. I suggest getting used aluminum heads because pretty much any aftermarket aluminum head is going to be as good or better than the World castings. Plus, it will knocked an easy 50 pounds off of your nose. __________________ As I lay rubber down the street I pray for traction I can keep But if I spin, and begin to slide Please dear God, protect my ride

January 10th, 2012, 04:24 PM	#26
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	The world product sr heads recomend 9.5.1 or higher compressionto see full power from them, thats what the direction on mine said before i sold them __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

January 10th, 2012, 03:55 PM	#24
rockylammon Newbie 1987 Mustang notchback to be determined Join Date: Dec 2011 Location: montgomery,al Posts: 25 iTrader: 0 reviews	thanks for ALL the comments... didnt mean to start so much crap! ive always been into gm's. this is my first mustang, so some things may sound dumb to some "experts"!! the guy doing my machine work said after the e7's are ported they will "pretty much" flow as well as the gt40's! he was trying to save me a lil bit of $ for the time being becouse im going to go with a set of world product heads.... but thanks for all your advice

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