GT-40P's

The Hitman

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Nov 22, 2005

#1

• Nov 22, 2005

• #1

Been gone awhile.. now I'm back.

Getting ready to buy a set of used GT-40P's. It's unknown how many miles they have on them. Anything I should look for?

Also do you recommend a spring change? If so which to go with?

I'm going to install a Ford Letter Cam with the heads. Any suggestions with my mods? B, F??

Will I need to change my rocker arms, lifters and pushrods? Or could those be reused?

Will I need higher valve covers?

And last but not least, What kind of headers do I need or is it a possibility that these heads can be used with regular header? I know I've seen someone do it before with the drawback being that the sparkplugs were a pain. Can it be done?

Thanks!

 

mytight95

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Apr 11, 2003

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Dothan,Al

Nov 23, 2005

#2

• Nov 23, 2005

• #2

can't really help you with the questions, but good to see you back...



jason

 

The Hitman

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• Nov 23, 2005

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LOL! Thanks.

 

final5-0

Mustang Master

Apr 6, 2003

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#4

• Nov 23, 2005

• #4

I think you can do much better with your choice of cams.

Crane, Comp and the like!

Letter cams are so old school.

Grady

 

The Hitman

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Oh I know I could.
But that's not the question. I'm doing a budget build because the car is almost paid off and once it is will remain in storage and be brought out only on RARE occasions and possibly to the drag strip twice a year. SO I don't want anything major. Just some extra grunt.

 

urban96

bubb rubb says:"woo woooooo"

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Sep 24, 2002

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#6

• Nov 23, 2005

• #6

i would def upgrade the springs

 

rio95

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Nov 18, 2003

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Grand Rapids, MI

Nov 23, 2005

#7

• Nov 23, 2005

• #7

Trickflow spring kit from summit ($100) and stock rocker and pushrods. I like my cam, but there are many out there.

 

OrangeMustangGt

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• Nov 23, 2005

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YEAH, i agree, definatly the trick flow valve spring kit. Also, the cams are your choice

 

rio95

Member

Nov 18, 2003

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Grand Rapids, MI

Nov 23, 2005

#9

• Nov 23, 2005

• #9

Just get a stg 1 or 2031. Both are awesome. Check out anderson ford motorsports also.

 

urban96

bubb rubb says:"woo woooooo"

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• Nov 23, 2005

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my idle and driveability with the 2031 are GREAT with no tune yet

 

The Hitman

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I'm going to check out the 2031.
Did you need higher valve covers??

Also headers... Anyone make them for P's other than Mac and Ford??

 

The Hitman

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• Nov 23, 2005

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Just noticed that the 2031 is set up for 1.7 RR's. Is that what you guys are running??

 

mytight95

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Nov 24, 2005

#13

• Nov 24, 2005

• #13

there is a site that sells a reasonably price header made specific for P heads, i don't recall the name right now.... have you sifter through the numerous p head threads we have had this past year..... some people list combos with the p heads, the mods to the heads, cams and power numbers....... not to mention i remember the headers form one of those threads...


jason

 

urban96

bubb rubb says:"woo woooooo"

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#14

• Nov 24, 2005

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im running 1.7RR's. my stock covers wouldnt fit over them so i got some fox covers.

in using taller VC's i had to use an 3/8" intake spacer


im alsp running non p-specific BBK shortie headers. the only thing is to change plugs your gonna have to cut a slit in a spark plug socket so that you can change the #7 plug. i also highly recomend running 90 degree plug boots

 

The Hitman

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Wonder if it's just because of your Cobra intake that you had to use the spacer. I've got a friend with Fox VC's under an Edelbrock with no spacer. I have an Edelbrock. You think that could be the difference??

Also I have been checking out the more recent P threads but I haven't found any really good ones with parts and combo's listed.

 

urban96

bubb rubb says:"woo woooooo"

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Sep 24, 2002

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Nov 24, 2005

#16

• Nov 24, 2005

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yeah i think its just the cobra, it was hitting where the PCV thingy screws into it

 

The Hitman

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I hope so. My Edelbrock is hitting the hood as it is...

 

final5-0

Mustang Master

Apr 6, 2003

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#18

• Nov 24, 2005

• #18

The Hitman said:

Wonder if it's just because of your Cobra intake that you had to use the spacer. I've got a friend with Fox VC's under an Edelbrock with no spacer. I have an Edelbrock. You think that could be the difference??

Also I have been checking out the more recent P threads but I haven't found any really good ones with parts and combo's listed.

Click to expand...

One of the benefits of running an Edel intake is they have a bit more room for things to fit.

I have several friends who run them as I do and none of us use a spacer.

Grady

 

mytight95

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#19

• Nov 24, 2005

• #19

The Hitman said:

I hope so. My Edelbrock is hitting the hood as it is...

Click to expand...

i have a 3/8th's spacer on my edelbrock, had to remove the hood blanket, but i am gonna have another hood soon anyhow......


jason

 

rio95

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Nov 18, 2003

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Grand Rapids, MI

Nov 26, 2005

#20

• Nov 26, 2005

• #20

I wouldn't get 1.7 RR if I were you. If you want more lift, just get a bigger cam. Although, P heads don't flow very well in larger lifts in stock form. Plus, roller rockers tend to be noisier than hell. Just keep the stock rockers and valvecovers and spend your money on something usefull.