gt40 cast iron heads
10-28-2007, 12:34 AM
#2
3rd Gear Member
Join Date: May 2006
Location:
Posts: 668
RE: gt40 cast iron heads
google it. i have the heads but i forgot what chamber size. i think its either 64 or 58. those numbers stand out to me and if you know your stuff its the number that will make the compression lower. i THINK its 58.
10-28-2007, 09:52 AM
#4
2nd Gear Member
Join Date: Jun 2007
Location: Roseville, CA
Posts: 444
RE: gt40 cast iron heads
ORIGINAL: vtecwho
google it. i have the heads but i forgot what chamber size. i think its either 64 or 58. those numbers stand out to me and if you know your stuff its the number that will make the compression lower. i THINK its 58.
google it. i have the heads but i forgot what chamber size. i think its either 64 or 58. those numbers stand out to me and if you know your stuff its the number that will make the compression lower. i THINK its 58.
10-28-2007, 10:23 AM
#5
Banned
Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
RE: gt40 cast iron heads
ORIGINAL: tooslow5.0
so gt40 irons will lower your compression on a stock ho bottom end?
ORIGINAL: vtecwho
google it. i have the heads but i forgot what chamber size. i think its either 64 or 58. those numbers stand out to me and if you know your stuff its the number that will make the compression lower. i THINK its 58.
google it. i have the heads but i forgot what chamber size. i think its either 64 or 58. those numbers stand out to me and if you know your stuff its the number that will make the compression lower. i THINK its 58.
Cobra GT40's are ~64cc
Exploder GT40's are ~66cc
Exploder GT40P's are ~58-59
they will give you 9:1, 8.8:1, and 9.5:1 compression.. respectively
