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Thread: Picked up some GT 40 P heads
          
   
   

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  1. #1
    bluestang67's Avatar
    bluestang67 is offline CHR Member Visit my Photo Gallery
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    Picked up some GT 40 P heads

     



    Well picked up some GT 40 P heads from some one near by . They hot tanked ,checked for cracks . Seats show no wear as do the valves .. Clean and painted don't think I have ever gotten them in this condition before .










  2. #2
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    They look nice Bobby, good score!!!
    Yesterday is history, tomorrow is a mystery, Live for Today!
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  3. #3
    bluestang67's Avatar
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    Dave thanks now I just need to figure out the rest so they will perform to there max . This is all new to me . Not doing a wild build just something nostalgia and dependable . I will have to get well educated on components that will enhance these heads .

  4. #4
    randyr's Avatar
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    Quote Originally Posted by bluestang67 View Post
    Dave thanks now I just need to figure out the rest so they will perform to there max . This is all new to me . Not doing a wild build just something nostalgia and dependable . I will have to get well educated on components that will enhance these heads .
    Hey Bobby,
    Congrats on the Gt40P's! There's quite a bit of info on what can be done with them at www.sbftech.com if you wanna check it out. On mine they did a basic valve job then added 1.7 roller rockers & valve springs.
    It's cool that your making some progress.

    Randy
    "It is not much good thinking of a thing unless you think it out." - H.G. Wells

  5. #5
    bluestang67's Avatar
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    Randy I am actually there right now in another window reading between both sites . I have a lot to learn and going to need al lot of info on this build once I figure out some more .

  6. #6
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Hey Randy, are you running the 1.7's on the street???? I've used them drag racing on some Windsor's, wondered how much they help an engine in street trim????? Moly rockers, or aluminum????
    Yesterday is history, tomorrow is a mystery, Live for Today!
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  7. #7
    randyr's Avatar
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    Quote Originally Posted by Dave Severson View Post
    Hey Randy, are you running the 1.7's on the street???? I've used them drag racing on some Windsor's, wondered how much they help an engine in street trim????? Moly rockers, or aluminum????
    Dave, to be honest, I don't know what they'll do for the street. I haven't started it yet. My engine is a 302 bored to 306 The rockers & springs were recommended by Jay Allen of Camshaft Innovations who also designed my cam. They are Scorpion 1.72 aluminum roller rockers as shown in the pic below. The spec sheet for the cam is there also.
    Jay suggested using a Weiand Xcelerator intake with Holley 4150 carb to produce 320-340hp. It may all be overkill for my application but we'll see when I finally get to fire it up!
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    "It is not much good thinking of a thing unless you think it out." - H.G. Wells

  8. #8
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Thanks Randy, interesting specs on the cam, anxious to hear how it works out!!!
    Yesterday is history, tomorrow is a mystery, Live for Today!
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  9. #9
    pat mccarthy's Avatar
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    cam looks not to far off of the erson cam i putting in the 351 w i am doing now. have to check the numbers on it see if i am all wet
    Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip

  10. #10
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    Randyr is this 30 over 302 going into a Fox Body Mustang with a 5-Speed and a Big Rear Gear ? Did Jay also tell you How that Camshaft will work on the Street ? 340 H.P how Much Torque ? One Step Down on the Camshaft may be needed .
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  11. #11
    randyr's Avatar
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    Quote Originally Posted by tango View Post
    Randyr is this 30 over 302 going into a Fox Body Mustang with a 5-Speed and a Big Rear Gear ? Did Jay also tell you How that Camshaft will work on the Street ? 340 H.P how Much Torque ? One Step Down on the Camshaft may be needed .
    The engine is going in a 37 Ford tudor sedan with a 5-speed. At the time Jay designed the cam I was going to use a C4 auto, 9" with 3.0 gears. Then I changed my mind and decided to go with a 5 speed. Will probably change the rear gears to 3.50 or so. I told him at the time I wanted around 300 hp and to be very street driven. This was what he came up with. What do you mean "one step down on the camshaft"?

    Didn't mean to hi-jack your thread, Bobby. Hopefully, this will be useful info for you.
    "It is not much good thinking of a thing unless you think it out." - H.G. Wells

  12. #12
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Think he's saying use less cam.... Think I'd try the one Jay made up for you. If it was right for the automatic, should work fine with the 5 speed.....
    Yesterday is history, tomorrow is a mystery, Live for Today!
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  13. #13
    randyr's Avatar
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    Quote Originally Posted by Dave Severson View Post
    Think he's saying use less cam.... Think I'd try the one Jay made up for you. If it was right for the automatic, should work fine with the 5 speed.....
    That's what Jay said. It's in there. I'm not going to change it unless it proves to be a problem. I'm sure it'll be quite different from the stock '69 302/2V that I ran in the car for years! Actually this is that same engine, just beefed up a little!
    "It is not much good thinking of a thing unless you think it out." - H.G. Wells

  14. #14
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    Oh Ya It will run Good on the HighWay
    Wisdom is acquired by experience, not just by age

  15. #15
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    Didn't mean to hi-jack your thread, Bobby. Hopefully, this will be useful info for you.
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    Randy not hi jacking improving is what I call it . Jay is at sbftech alot been sitting there reading a lot seems he sets up a lot of engines for what you want .

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