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Thread: GT and GTP heads

  1. #1
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    Default GT and GTP heads

    PowerPro crate engines say that the Explorer block came with "GT" and GTP castings on the block,,,, any thoughts since thier database is linked to FoMoCo?
    How does this information interpert into what head?
    http://www.rebuiltengines.net/lb_ford.htm

    I know about the explorer having the gtp heads,, what about the possibility of them also having GT's?
    It appears the 96 is the only effected model.,, and for a few months only,

    perhaps their numbers are wrong, just look at how they classify the 1969 5.8 long block with respect (disrespect) to the heads by grouping it into early 70's years.

    302/5.0
    V8
    96-10/96
    P
    Explorer, MFI, Non Roller Cam, Block #F1SE, Head #F1ZE-AA, Knock Sensor
    in Block, firing order 13726548, GT cast next to #1 spark plug Ford Engine
    DFX5
    $2,573
    $345


    302/5.0
    V8
    12/96-99
    P
    Explorer, MFI, Non Roller Cam, Block #F1 SE, Head #F77E-AA, Knock Sensor in Block,
    firing order 13726548, GTP cast next to #1 spark plug
    DFX6
    $1,695
    $450
    Last edited by jcassity; 01-03-2007 at 02:23 AM.

  2. #2
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    hummmm,

    take notice folks,, it appears even the pro's (well,, sort of) are just as confuzzeled???

    perhaps there is a ford secret after all. I gotta go back there and collect that cc data anyway.

    http://forums.stangnet.com/showthread.php?t=517975




    scott

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    the none roller cam is wrong. didnt all ford 5.0's and 8's com wil hyd. roller cams from 85 on. the GT's came with whenever they started the 5.0's in the exploders till mid year 96-97 then the p. till the 4.6. something along those lines and toss the fact that in the mix of all that they lost the egr ports
    trick flow street heat intake , 24lbs injetors, ported GT-40's (Chip) long tube headers. and a Performance Automatic C4, with a hurst shifter!

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    Truck 5.0's had non roller cams up until '94......
    http://www.foxtbirdcougarforums.com/...ight=truck+5.0

    Scott, that dude Tmoss knows his stuff. He does intake porting. Here's his site: http://www.tmossporting.com/
    -- 05 Mustang GT-Whipplecharged !! -- 87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's! http://www.fquick.com/V8Demon

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    Alright I now your good w/giving good info to whoever asks so Iím opening my book to give you my best info now remember the book could be wrong.
    In 1996 ford stopped using the 5.0 in pass cars because of political emissions pressure. But the less scrutinized emissions test was still for trucks so ford let the pushrod motor live on in the SUV and w/the development of GT40 heads and them being superior over the E7 they continued the motor w/GT40 heads also because of less 5.0s being manufactured. Now a ľ way though 97 ford engineers developed a better version of the GT40 and they called them GT40P theses heads were used on the 95 cobra-R models only not cobras. They state there old plan was theses GTP heads were to replace all 5.0 heads but that plan got sidetracked cause of the discontinuing of the 5.0 in mustangs & pass cars. So they used them in Explorerís & Mountaineerís.
    Now some my already know that so on w/ the question
    My book says a few different things
    96-97 ľ explorer heads 63.4-66.4
    97 ľ -later explorer heads 58.3-61.3

    Now on a different page

    Cobra and HO marine F1ZE-AA 60.6-63.6
    Cobra and HO marine F3ZE-AA 60.6-63.6
    GT40P 97 & later explorer F77E-AA 58.3-61.3
    GT40 96-97 explorer F1ZE-AA 63.4-66.4
    GT40 all F3ZE-AA 63.4-66.4
    As you can see the same casting # has different CCs. Now it also goes on to say in 93 the GT40 heads underwent a series of milling or slabbing as they put it in the cobra plant now they did not say how much (which I was upset about) now at my machine shop his book said that F3ZE (which is what mine were) is 62.1 and after doing my research and doubted all books had them CC-ed so my F3ZE already had .010 taking off When got the CC-ed he got 61.8-62 (some where in there) so for taking every .005-.006 off a head is about 1 CC you can see his book wasnít so correct so I took another .010 off getting somewhere close to 60 CCs

    and to my understanding all 5.0 in the 90s were hydra-roller
    Billy

    My motor missing the gt40 tubular upper http://foxtbirdcougarforums.com/showthread.php?t=17223
    Picks of my car http://foxtbirdcougarforums.com/showthread.php?t=17369
    http://www.cardomain.com/ride/2395591
    Car Domain will be under constrution for a while(it took me a year to do this)

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    Innes
    i see you to are curious about the same thing i am. Its funny how the quesitons i have are possibly not even questions at all,,, they happen to be an "unawarness" of what ford engineers were doing during the year 1996.

    Ill betcha there could be two ford exploders side by side dubed as 1996 but have two different head styles.
    the same could also be possible for identical 1997 suv's side by side

    is that a fair statement? i think it might be.

    whatcha think?

    nevertheless, this is so so interesting , including your discovery of "slabbing". wonder what that meant anyway. Did they add meat or take it away?,,.

    wonder if tom , nick, shawn or carm could have any stuff on this matter.

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    Quote Originally Posted by Paul Flockhart View Post
    Truck 5.0's had non roller cams up until '94......
    http://www.foxtbirdcougarforums.com/...ight=truck+5.0

    Scott, that dude Tmoss knows his stuff. He does intake porting. Here's his site: http://www.tmossporting.com/
    im still looking at this site,, interesting how he cut the upper intake in half making it shorter and i guess more rounded.

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    Quote Originally Posted by jcassity View Post
    Innes
    i see you to are curious about the same thing i am. Its funny how the quesitons i have are possibly not even questions at all,,, they happen to be an "unawarness" of what ford engineers were doing during the year 1996.

    Ill betcha there could be two ford exploders side by side dubed as 1996 but have two different head styles.
    the same could also be possible for identical 1997 suv's side by side

    is that a fair statement? i think it might be.

    whatcha think?

    nevertheless, this is so so interesting , including your discovery of "slabbing". wonder what that meant anyway. Did they add meat or take it away?,,.

    wonder if tom , nick, shawn or carm could have any stuff on this matter.
    Sorry, I'm an electronics guy, not an engine guy. I can build an engine of course, but don't ask me trivia on 'em (back when I had my '88 Cougar I actually thought it had an HO, and even now I'd have to look up the firing order for my car - strange considering I've got the GM V8 firing order memorized from trade school). Having worked in GM dealerships and never having any trouble with any Ford V8's I've just never gotten deep enough into Ford engines to know a bunch about 'em. That will change with the 351 build-up though. And I do still have a scar on my thumb from my adventures with the Ford 3.8 (when it says in the shop manual to use something other than your hand to push pistons out, heed the warning. Casting flashes are SHARP)

    I would agree with the engineering free-for-all though - for some things it seems Ford had no definitive answer, including the 88 Sport/8.8 rear controversy
    1988 5.0 Thunderbird SOLD SEPT 11 2010: TC front clip/hood ♣ Body & paint completed Oct 2007 ♣ 3.55 TC rear end and front brakes ♣ TC interior ♣ CHE rear control arms (adjustable lowers) ♣ 2001 Bullitt springs ♣ Energy suspension poly busings ♣ Kenne Brown subframe connectors ♣ CWE engine mounts ♣ Thundercat sequential turn signals ♣ Explorer overhead console (temp/compass display) ♣ 2.25" off-road dual exhaust ♣ T-5 transmission swap completed Jan 2009 ♣

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    Yes id agree in 1996 though in both 96-97ľ GT40 heads it could be ether casting # F1ZE or F3ZE my book says F1ZE but clearly mine came of a 97 explorer and there F3ZE.
    And the obvious if you go to a junk yard and ask for 97 explorer 5.0 heads they will tell you there 2 different ones.
    Any way all this info Iím telling you I got from this book itís very good and interesting but the more you learn the more you realize you donít know and though a lot of people rave over this book I have learned of some discrepancies in the info. http://www.bentleypublishers.com/gal...5&galleryId=79
    Billy

    My motor missing the gt40 tubular upper http://foxtbirdcougarforums.com/showthread.php?t=17223
    Picks of my car http://foxtbirdcougarforums.com/showthread.php?t=17369
    http://www.cardomain.com/ride/2395591
    Car Domain will be under constrution for a while(it took me a year to do this)

  10. #10
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    Quote Originally Posted by Innes View Post
    Any way all this info I’m telling you I got from this book it’s very good and interesting but the more you learn the more you realize you don’t know and though a lot of people rave over this book I have learned of some discrepancies in the info.
    I think what i was trying to say earlier is this...
    I just wanna be able to recognize casting numbers and what parts are the better of the herd. An example would be the 69' 351w heads. To be able to separate that head from the "like" windsor heads means the difference between performance and oppss.

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