HERES THE DEAL!! GT40's
03-17-2007, 02:36 AM
#13
4th Gear Member
Join Date: Mar 2006
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Posts: 1,467
RE: HERES THE DEAL!! GT40's
ORIGINAL: black89gt
now that we're on gt40 topic.. what year explorers can i get gt40 heads of off? not the gt40p's.
now that we're on gt40 topic.. what year explorers can i get gt40 heads of off? not the gt40p's.
But the gt40's are found on explorers and mountaineers until 1997 1/2 and the p's are on exploerers and mountaineers 1997 1/2 and up.
03-17-2007, 02:38 AM
#14
5th Gear Member
Join Date: Jun 2005
Location: Frederick, Maryland.
Posts: 2,118
RE: HERES THE DEAL!! GT40's
ORIGINAL: BlackBetty93GT
the only reason im askin is cause i thought you could get them at a junk yard for like $100
the only reason im askin is cause i thought you could get them at a junk yard for like $100
03-17-2007, 03:59 PM
#18
Banned
Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
RE: HERES THE DEAL!! GT40's
ORIGINAL: black89gt
now that we're on gt40 topic.. what year explorers can i get gt40 heads of off? not the gt40p's.
now that we're on gt40 topic.. what year explorers can i get gt40 heads of off? not the gt40p's.
96-97.5 explorers and mountaineers had a 302 engine with GT-40 heads and intake. the motor ran 8.8:1 compression so regular GT-40 heads from an explorer MUST be milled .025 to give them the proper compression ratio on a mustang 5.0HO.
97.5-2000 Exploders and Mountaineers had GT-40P heads on their 302 motors. these will raise your compression to 9.5:1 and will slightly out-flow the regular GT-40's
03-17-2007, 04:25 PM
#20
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Join Date: Dec 2005
Location: Lil' Rhody
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RE: HERES THE DEAL!! GT40's
did I say anything about milling the cobra heads???? no. I said you HAVE to mill the EXPLORER heads.
It would be wise of you to atleast take them to a machine shop for a cleaning/resurfacing/pressure check
maybe even a valve job.... maybe get the thermactor bumps smoothed out in the exhaust ports.... hell.. Might as well gasket match the heads... then do the same to your lower intake......
but I like doing extra work that makes HP..... I realize that not everyone is like me.
It would be wise of you to atleast take them to a machine shop for a cleaning/resurfacing/pressure check
maybe even a valve job.... maybe get the thermactor bumps smoothed out in the exhaust ports.... hell.. Might as well gasket match the heads... then do the same to your lower intake......
but I like doing extra work that makes HP..... I realize that not everyone is like me.