Z zZsKyZz Member Dec 1, 2005 503 0 17 Dec 24, 2006 #1 Dec 24, 2006 #1 Does anyone know the cc size of GT40 heads and the stock E7TE heads?
mstngjoe Founding Member Jul 26, 2002 428 0 0 Oregon Dec 24, 2006 #2 Dec 24, 2006 #2 FWIW, my 1993 Factory Service Manual lists the 5.0 head (E7TE) at 60.6-63.6 cc and the Cobra (GT40) head at 62.5 cc. I've not personally cc'd either myself and I'll guess that the numbers on the GT40 are nominal.
FWIW, my 1993 Factory Service Manual lists the 5.0 head (E7TE) at 60.6-63.6 cc and the Cobra (GT40) head at 62.5 cc. I've not personally cc'd either myself and I'll guess that the numbers on the GT40 are nominal.
blksn955.o Founding Member Mar 15, 2002 3,263 0 66 st.louis mo 314 Dec 24, 2006 #3 Dec 24, 2006 #3 There is a +/- 2 to 3cc production var. in actuall cc IIRC.
Z zZsKyZz Member Dec 1, 2005 503 0 17 Dec 24, 2006 #4 Dec 24, 2006 #4 ...So what makes the GT40 heads so much better? I was talking to a guy I know and he said the GT40 heads arn't worth $400.
...So what makes the GT40 heads so much better? I was talking to a guy I know and he said the GT40 heads arn't worth $400.
mstngjoe Founding Member Jul 26, 2002 428 0 0 Oregon Dec 24, 2006 #5 Dec 24, 2006 #5 There's some good comparison info on the GT40 & GT40P heads here: http://www.stangpro.com/html/articles/gt40p_files/gt40p1.htm#info The price of $400 may or may not be good. Are they ready to bolt on or do they need freshening? All things considered, I like the performance of the Thumper E7's for the money. I hope to be getting a set for my DD in the next few months.
There's some good comparison info on the GT40 & GT40P heads here: http://www.stangpro.com/html/articles/gt40p_files/gt40p1.htm#info The price of $400 may or may not be good. Are they ready to bolt on or do they need freshening? All things considered, I like the performance of the Thumper E7's for the money. I hope to be getting a set for my DD in the next few months.