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347 support

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Old 05-30-2007, 09:50 AM
  #1  
piedraco
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Default 347 support

hey, first let me tell you about my car:
I got an 89 vert, stroked to 347, trickflow heads and stage 1 cam, bbk 75mm TB and EGR, trickflow upper plenum with intake manifold, mac shorty headers and full exhaust, underdrive pullety, 7qt oil pan (moroso), t-56, and some other stuff that I cant remember right now.

by changing the cam on the motor, does that change the sound, because it sounds LOUD as hell compared to what it used to sound like.

I installed it last week and I finally got it to turn on last night, but there are some problems and I dont know where to begin.
First of all i think there is a vacuum leak somewhere and I have no idea where its comming from, the only thing I can think of is this junction of vacuum lines on the passenger side by the firewall, its got 4 vacuum lines merging into a rubber retainer and then 1 vacuum coming out of the top for the EGR. I dont know if it's supposed to look like that because when I took out the stock engine i didnt notice it.

another problem i am having is that its backfiring, i am thinking that this is related somehow to the mysterious vacuum leak, or my valaves arent correctly tightened down.

one more problem. as i shut off the engine I hear a whistling sound like as if pressure is being released from somewhere. I am thinking that maybe this has something to do with my fuel injectors not sitting properly, maybe an O ring is bad or something, It's loud as hell when the engine turns off. also i have a adjustable fuel pressure regulator with a gauge and the system is not holding pressure when the engine is turned off, is it supposed to?
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Old 05-30-2007, 02:19 PM
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Mustangkiler
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Default RE: 347 support

ya it should hold pressure for a little while after its turned off.
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Old 05-30-2007, 03:13 PM
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r.barn
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Default RE: 347 support

vac leaks are common just keep looking

backfire could be tons of things

the heads, cam intake and exhaust will all make it louder

you need a better cam for that 347 anyway......... you have a 302 cam in there
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Old 05-30-2007, 03:21 PM
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piedraco
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Default RE: 347 support

the cam that came with the trickflow kit isnt good enough? damn man you know what a hassle it is to yank that engine out again to shange the freakin cam, I wish I would have known that before i installed it. What do you recommend?
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Old 05-30-2007, 03:23 PM
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mattdel
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Default RE: 347 support

motor doesn't need to come out to change the cam
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Old 05-30-2007, 03:28 PM
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my77stang
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Default RE: 347 support

could he get better gains from another cam? sure.
does he actually NEED to do a cam swap? no
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Old 05-30-2007, 03:29 PM
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nasty50
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Default RE: 347 support

why not go with the tf stage 2? i've heard good things about that
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Old 05-30-2007, 03:55 PM
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piedraco
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Default RE: 347 support

originally I was going to do a 5.0 swap into my ranger, that would've been sweet except i needed to buy a mustang to gut it for parts to put into the ranger F-that! i rather hack up a ranger than a mustang. i wasnt aware at the time that trickflow made different stage cams i just purchased the whole upper assembly for like $2k. Then i said F-it let me stroke it, so i spent another $1.5k on parts and another $900 at the machine shop balancing and all that good stuff that machine shops do. I then went crazy and started buying crap for it. Now i have about $7k between engine and trans and a vacuum leak and valves that are driving me crazy. I got an extra 5.0 motor just sitting in my house with a t-5 in decent shape. if anyone wants to make me an offer on it and come pick it up let me know.
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Old 05-30-2007, 03:57 PM
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mattdel
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Default RE: 347 support

where r u located
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Old 05-30-2007, 04:01 PM
  #10  
piedraco
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Default RE: 347 support

Miami, Fl engine is an 89 had no problems when it was in the car t-5 is in good shape too needs to be rebuilt but it worked fine when it was in the car.
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