87 Mustang 5.0 H.O

jk37 · 07-29-2002, 01:38 PM

Hallo can someone help me please.i have just put new head casgets on my 5.0 87 . the heads were cleaned at the shop .the car has dynomax mufflers and headers 8mm wires splitfire plugs the smog pump is not conected to anything pluged the holes in the heads.no air cilencer k&n filter. the car is runing hot. and pops at take off not much power either.There are two vacuum lines from the pleneam were do they go i have one hanging lose

please HELP THANK YOU

QUIN · 07-29-2002, 05:33 PM

im afraid youll have to be a bit more specific. there are quite a few vacuum hoses that come off your upper intake. are they coming from the rear? how long? what size? can you take any pics?
dont be driving it until you figure out where they go. you have a sensor on the center of the firewall that takes one, the vacuum tree in front of the drivers side firewall takes one. one runs off of the pvc valve on the rear of the intake and attaches to the upper intake on the underside. one attaches to the throttle body and i believe if you still have it, one to the smog pump. im probably forgetting a couple but im trying. the pvc one is easy to miss. give us more detail, sounds like your losing of have no vacuum.
Q

QUIN · 07-29-2002, 05:34 PM

by the way, exchange them splitfires with the trash for some autolites or something equivalent.
Q

QUIN · 07-29-2002, 05:36 PM

rereading your post,,, if the smog pump is not connected you should remove it. did you plug the holes in your exhaust pipes where the tube coming off the thermactor valve connects?

jk37 · 07-29-2002, 07:06 PM

thankyou for your interest. the vacuum lines i am talking about are two very small ones on the under side of the pleneam

jk37 · 07-29-2002, 07:13 PM

i still have the smog pump on how whould i take it off which belt would iuse Ido not no what the thermactor valve is. again THANK YOU

jason 95gts · 07-29-2002, 07:24 PM

The pop sounds like it could be fuel related.Check and see if the vaccum line is connected to the fuel pressure regulator, the other posibbly could go to the egr valve.The overheating problem, did you install the head gaskets properly they should both say front and they have to be put on correctly or you will cut off water flow, or it could be the thermostat, timing, did you re check your timing after you reinstalled everything.

jason 95gts · 07-29-2002, 07:34 PM

One more thing check forheader leaks at the heads and h-pipe,if youplug the back of the heads where the smog tubes go I believe you can use a 1/2 inch set screw. Good Luck

Kamaro Killer · 07-29-2002, 07:38 PM

Do you have an off-road h-pipe? If not, you need the smog pump. You'll clog the catalitic converters if you don't run the smog pump. The thermactor valve is the pipe running from the smog pump to the center of the h-pipe. It is only about a 1/2" pipe. -Keith

QUIN · 07-30-2002, 10:06 AM

easiest way for you to figure out them two lines you have loose is to pull another stang up next to yours. you should know somebody i hope who has one. then you can see where his/hers go and check for any you might have mixed up as well.
i removed my a/c with the smog pump so im not sure but i think you can simply remove it and run a shorter belt. i had to move the tensioner pulley to where the a/c used to be, but i dont think you will have to. use a string to find out what length belt you need.
later,
Q

jk37 · 07-30-2002, 10:52 AM

yes have off-road H-pipe no catalitic converters .can anyone tell me how much Hp i can expect from my setup when it runs right.And how much a new camero z28 has. i just got smoked

QUIN · 07-30-2002, 11:16 AM

i cant beleive your driving that car (let alone racing it) with vacuum lines hanging loose. please tell me you found where to connect them before this??
Q

jk37 · 07-30-2002, 11:32 AM

yes found vacuum lines the one i was asking about used to go to the smog stuff i naw have it gaped off

07-29-2002, 01:38 PM	#1
jk37 Registered Member Join Date: Jul 2002 Location: Florida Posts: 9	87 Mustang 5.0 H.O Hallo can someone help me please.i have just put new head casgets on my 5.0 87 . the heads were cleaned at the shop .the car has dynomax mufflers and headers 8mm wires splitfire plugs the smog pump is not conected to anything pluged the holes in the heads.no air cilencer k&n filter. the car is runing hot. and pops at take off not much power either.There are two vacuum lines from the pleneam were do they go i have one hanging lose please HELP THANK YOU

07-29-2002, 05:33 PM	#2
QUIN Registered Member Join Date: May 1999 Location: Chillicothe, OH. Posts: 1,289	im afraid youll have to be a bit more specific. there are quite a few vacuum hoses that come off your upper intake. are they coming from the rear? how long? what size? can you take any pics? dont be driving it until you figure out where they go. you have a sensor on the center of the firewall that takes one, the vacuum tree in front of the drivers side firewall takes one. one runs off of the pvc valve on the rear of the intake and attaches to the upper intake on the underside. one attaches to the throttle body and i believe if you still have it, one to the smog pump. im probably forgetting a couple but im trying. the pvc one is easy to miss. give us more detail, sounds like your losing of have no vacuum. Q __________________ Quin, 87 GT,306,forged/cut pistons,edelbrock head\intake,steeda#18cam,1.7rr,MSD Blaster tfi coil,A9L,pro-m75mm,24#inj,accufab65mm,2.5"pipes,hooker headers,dynomax exhaust,3.73 gr,110 lph fp,moroso cold air,ASP pullies, weld rims See my engine on user rides. I see your shwartz is as big as mine, now lets see how well you handle it!

07-29-2002, 05:34 PM	#3
QUIN Registered Member Join Date: May 1999 Location: Chillicothe, OH. Posts: 1,289	by the way, exchange them splitfires with the trash for some autolites or something equivalent. Q __________________ Quin, 87 GT,306,forged/cut pistons,edelbrock head\intake,steeda#18cam,1.7rr,MSD Blaster tfi coil,A9L,pro-m75mm,24#inj,accufab65mm,2.5"pipes,hooker headers,dynomax exhaust,3.73 gr,110 lph fp,moroso cold air,ASP pullies, weld rims See my engine on user rides. I see your shwartz is as big as mine, now lets see how well you handle it!

07-29-2002, 05:36 PM	#4
QUIN Registered Member Join Date: May 1999 Location: Chillicothe, OH. Posts: 1,289	rereading your post,,, if the smog pump is not connected you should remove it. did you plug the holes in your exhaust pipes where the tube coming off the thermactor valve connects? __________________ Quin, 87 GT,306,forged/cut pistons,edelbrock head\intake,steeda#18cam,1.7rr,MSD Blaster tfi coil,A9L,pro-m75mm,24#inj,accufab65mm,2.5"pipes,hooker headers,dynomax exhaust,3.73 gr,110 lph fp,moroso cold air,ASP pullies, weld rims See my engine on user rides. I see your shwartz is as big as mine, now lets see how well you handle it!

07-29-2002, 07:06 PM	#5
jk37 Registered Member Join Date: Jul 2002 Location: Florida Posts: 9	more info thankyou for your interest. the vacuum lines i am talking about are two very small ones on the under side of the pleneam

07-29-2002, 07:13 PM	#6
jk37 Registered Member Join Date: Jul 2002 Location: Florida Posts: 9	more i still have the smog pump on how whould i take it off which belt would iuse Ido not no what the thermactor valve is. again THANK YOU

07-29-2002, 07:24 PM	#7
jason 95gts Registered Member Join Date: Jul 2002 Location: belle chasse La. Posts: 47	vaccum lines The pop sounds like it could be fuel related.Check and see if the vaccum line is connected to the fuel pressure regulator, the other posibbly could go to the egr valve.The overheating problem, did you install the head gaskets properly they should both say front and they have to be put on correctly or you will cut off water flow, or it could be the thermostat, timing, did you re check your timing after you reinstalled everything.

07-29-2002, 07:34 PM	#8
jason 95gts Registered Member Join Date: Jul 2002 Location: belle chasse La. Posts: 47	pop One more thing check forheader leaks at the heads and h-pipe,if youplug the back of the heads where the smog tubes go I believe you can use a 1/2 inch set screw. Good Luck

07-29-2002, 07:38 PM	#9
Kamaro Killer Mustang Enthusiast Join Date: Mar 2002 Posts: 528	thermactor valve Do you have an off-road h-pipe? If not, you need the smog pump. You'll clog the catalitic converters if you don't run the smog pump. The thermactor valve is the pipe running from the smog pump to the center of the h-pipe. It is only about a 1/2" pipe. -Keith __________________ 1993 GT 5.0-My Stang Rice Hater's Club Member 22

07-30-2002, 10:06 AM	#10
QUIN Registered Member Join Date: May 1999 Location: Chillicothe, OH. Posts: 1,289	easiest way for you to figure out them two lines you have loose is to pull another stang up next to yours. you should know somebody i hope who has one. then you can see where his/hers go and check for any you might have mixed up as well. i removed my a/c with the smog pump so im not sure but i think you can simply remove it and run a shorter belt. i had to move the tensioner pulley to where the a/c used to be, but i dont think you will have to. use a string to find out what length belt you need. later, Q __________________ Quin, 87 GT,306,forged/cut pistons,edelbrock head\intake,steeda#18cam,1.7rr,MSD Blaster tfi coil,A9L,pro-m75mm,24#inj,accufab65mm,2.5"pipes,hooker headers,dynomax exhaust,3.73 gr,110 lph fp,moroso cold air,ASP pullies, weld rims See my engine on user rides. I see your shwartz is as big as mine, now lets see how well you handle it!

07-30-2002, 10:52 AM	#11
jk37 Registered Member Join Date: Jul 2002 Location: Florida Posts: 9	h-pipe yes have off-road H-pipe no catalitic converters .can anyone tell me how much Hp i can expect from my setup when it runs right.And how much a new camero z28 has. i just got smoked

07-30-2002, 11:16 AM	#12
QUIN Registered Member Join Date: May 1999 Location: Chillicothe, OH. Posts: 1,289	i cant beleive your driving that car (let alone racing it) with vacuum lines hanging loose. please tell me you found where to connect them before this?? Q __________________ Quin, 87 GT,306,forged/cut pistons,edelbrock head\intake,steeda#18cam,1.7rr,MSD Blaster tfi coil,A9L,pro-m75mm,24#inj,accufab65mm,2.5"pipes,hooker headers,dynomax exhaust,3.73 gr,110 lph fp,moroso cold air,ASP pullies, weld rims See my engine on user rides. I see your shwartz is as big as mine, now lets see how well you handle it!

07-30-2002, 11:32 AM	#13
jk37 Registered Member Join Date: Jul 2002 Location: Florida Posts: 9	yes found vacuum lines the one i was asking about used to go to the smog stuff i naw have it gaped off

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Safety Issue 64 - 70 Mustangs	Mach1 Cobra Jet	Classic Mustangs	20	07-11-2005 08:06 PM
Yellow Mustang Stampede TULSA OK August 17	stylin99	Ford Show & Go	2	11-09-2004 11:19 PM
Myrtle Beach Mustang Week 7/22-28/2002	GreenMachine93	Ford Show & Go	0	06-21-2002 05:59 PM
89-Mustang pulling trailer -vs- 2000 Mustang	Five0	Stang Stories	7	04-01-2001 02:50 AM
Salaeen, Shelby, Cobra please define these for me.	Taqus	Blue Oval Lounge	3	01-17-2001 02:39 AM