This is topic GT40 heads and x cam question in forum Tech Talk at Northern California Ford Owners  .


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Posted by cobraman_1994 (Member # 467) on :
 
i need new springs, what should i get?
the set up i have is:
x cam
1.7 roller rockers
ported GT40 heads
_______ springs
 

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Posted by 93PONY (Member # 60) on :
 
Comp 987's installed at 1.800 inches.
Or equivilent.
~120lbs seat, 310lbs at .550 lift, & 330lbs at .600 lift
Coil bind at .650 lift with at the above installed height.
http://store.summitracing.com/partdetail.asp?part=CCA%2D987%2D16

BTW, these are dual springs so you'll have to get the spring seats machined to fit duals. Have them cut to fit a spring with .697 inch inner diameter. (any machine shop should be able to do this for like $40)

If you were using 1.6 rockers you could get away with these:
http://store.summitracing.com/partdetail.asp?part=TFS%2D2500100

[ January 25, 2004, 10:18 PM: Message edited by: 93PONY ]
 

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Posted by the50ho (Member # 73) on :
 
LMFAO!!! That combo sounds VERY familiar!
 

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Posted by cobraman_1994 (Member # 467) on :
 

quote:

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Originally posted by the50ho:
LMFAO!!! That combo sounds VERY familiar!

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dude, i got such a good deal on this shit. 200 for the heads, rockers, lifters, and pushrods. and 90 dollars shipped for the cam.
i finally have found some good deals!

oh, and the heads have been ported nicley too
is this the setup you had in your 87 before you parted it out and sent it to its doom?

[ January 25, 2004, 10:36 PM: Message edited by: cobraman_1994 ]
 

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Posted by cobraman_1994 (Member # 467) on :
 

quote:

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Originally posted by 93PONY:
Comp 987's installed at 1.800 inches.
Or equivilent.
~120lbs seat, 310lbs at .550 lift, & 330lbs at .600 lift
Coil bind at .650 lift with at the above installed height.
http://store.summitracing.com/partdetail.asp?part=CCA%2D987%2D16

BTW, these are dual springs so you'll have to get the spring seats machined to fit duals. Have them cut to fit a spring with .697 inch inner diameter. (any machine shop should be able to do this for like $40)

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ok, i just bought them!
can i still use the stock valve covers? or should i just find some aftermarket ones
 

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Posted by 93PONY (Member # 60) on :
 

quote:

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Originally posted by cobraman_1994:

quote:

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Originally posted by 93PONY:
Comp 987's installed at 1.800 inches.
Or equivilent.
~120lbs seat, 310lbs at .550 lift, & 330lbs at .600 lift
Coil bind at .650 lift with at the above installed height.
http://store.summitracing.com/partdetail.asp?part=CCA%2D987%2D16

BTW, these are dual springs so you'll have to get the spring seats machined to fit duals. Have them cut to fit a spring with .697 inch inner diameter. (any machine shop should be able to do this for like $40)

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ok, i just bought them!
can i still use the stock valve covers? or should i just find some aftermarket ones

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You should be able to use the stock covers....probably have to cut the baffle. Every setup is different. You'll have to check.
 

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Posted by cobraman_1994 (Member # 467) on :
 
ill pick up a set if i find some then, but i wont worry about it untill the time comes.
 

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Posted by Norgs (Member # 649) on :
 

quote:

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Originally posted by cobraman_1994:

quote:

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Originally posted by 93PONY:
Comp 987's installed at 1.800 inches.
Or equivilent.
~120lbs seat, 310lbs at .550 lift, & 330lbs at .600 lift
Coil bind at .650 lift with at the above installed height.
http://store.summitracing.com/partdetail.asp?part=CCA%2D987%2D16

BTW, these are dual springs so you'll have to get the spring seats machined to fit duals. Have them cut to fit a spring with .697 inch inner diameter. (any machine shop should be able to do this for like $40)

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ok, i just bought them!
can i still use the stock valve covers? or should i just find some aftermarket ones

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ur definately going to need tall valve covers and an intake spacer like 3/8 or so
 

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Posted by cobraman_1994 (Member # 467) on :
 
wich intake manifold should i go with?
 

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Posted by the50ho (Member # 73) on :
 
I used my gt40's, x cam with stock valve covers at first. I also used 1.6 rockers though. YOU MUST REMOVE THE BAFFLE!!!

It should clear otherwise.
 

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Posted by cobraman_1994 (Member # 467) on :
 
i guess we will find out pretty soon huh
now...about an intake manifold. should i just go with the GT40?
 

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Posted by 93PONY (Member # 60) on :
 
Edelbrock Performer manifold.

& on a fox you shouldn't have to get an intake spacer for aftermarket Valve Covers....unless they are a lot taller then stock.
I run 1.72 Scorpian rockers (large aluminums) with a custom cam that has .550 lift & those aluminum 'Cobra' valve covers from Ford. I had to remove 1 bolt from the VC baffle to get the rockers to clear. No intake spacer either.

There are also valve cover gaskets that are twice as thick as stock if you're real close to getting the stock valve covers to fit. My guess is you'll have to remove the baffle on the stock covers & other then that everything will clear.
 

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Posted by cobraman_1994 (Member # 467) on :
 
where should i send my heads? local prefered!
 

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Posted by 87 Saleen (Member # 1549) on :
 
to your local macheen chop
 

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Posted by 93PONY (Member # 60) on :
 

quote:

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Originally posted by cobraman_1994:
where should i send my heads? local prefered!

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quote:

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Originally posted by 93PONY:

quote:

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Originally posted by cobraman_1994:
where should i send my heads? local prefered!

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MotorMachine!

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quote:

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Originally posted by 93PONY:
Fair Oaks Blvd near Manzinita

My stang is up & running again. Got a few little bugs to work out & I still need to tune it. Should only be a few more weeks till she's ready to rock.

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great!
so how much are you going to boost now? now that your block is invincible
 

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Posted by 93PONY (Member # 60) on :
 
Same as before....minimum boost.
The rest of the combo can't take much more power. (rear end & tranny)
 

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