combustion chamber size of.....

avbcon12 · 02-12-2002, 08:00 PM

stock heads (E7TE) vs. (normal) GT-40 heads??

what will my compression do if i just change the heads??

thanks,
adam

Unit 5302 · 02-12-2002, 08:15 PM

E7TE = 64cc
GT40 = 65.5cc

Compression will drop from 9.0:1 to about 8.8:1.

avbcon12 · 02-12-2002, 08:22 PM

unit: will that hurt anything going a little lower in compression?? i dont intend on ever putting a blower on the car so keep that in mind.

thanks,
adam

Unit 5302 · 02-12-2002, 08:35 PM

It didn't hurt the Cobra.

02-12-2002, 08:00 PM	#1
avbcon12 Registered Member Join Date: Jul 2001 Location: West Bloomfield, MI Posts: 391	combustion chamber size of..... stock heads (E7TE) vs. (normal) GT-40 heads?? what will my compression do if i just change the heads?? thanks, adam __________________ 90 GT black/ grey leather ported GT-40 heads w/ 1.7RR, Cobra intake w/ ported lower, 24# injectors, 190LPH pump, 75mm Pro-M MAF, 65mm TB, K&N panel, BBK long tubes, Off road H-pipe, 2 ch. Flowmaster, Black magic fan, Kirban FPR, 180 deg. T-stat, 3.73's, Steeda Tri-Ax, 130 amp alt. Accell 8.8 race wires/cap/rotor, motorcraft plugs, Factory Five suspension, etc etc etc.... http://avbcon12.stangnet.com

02-12-2002, 08:22 PM	#3
avbcon12 Registered Member Join Date: Jul 2001 Location: West Bloomfield, MI Posts: 391	unit: will that hurt anything going a little lower in compression?? i dont intend on ever putting a blower on the car so keep that in mind. thanks, adam __________________ 90 GT black/ grey leather ported GT-40 heads w/ 1.7RR, Cobra intake w/ ported lower, 24# injectors, 190LPH pump, 75mm Pro-M MAF, 65mm TB, K&N panel, BBK long tubes, Off road H-pipe, 2 ch. Flowmaster, Black magic fan, Kirban FPR, 180 deg. T-stat, 3.73's, Steeda Tri-Ax, 130 amp alt. Accell 8.8 race wires/cap/rotor, motorcraft plugs, Factory Five suspension, etc etc etc.... http://avbcon12.stangnet.com

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02-12-2002, 08:15 PM	#2
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	E7TE = 64cc GT40 = 65.5cc Compression will drop from 9.0:1 to about 8.8:1.

02-12-2002, 08:35 PM	#4
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	It didn't hurt the Cobra.