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http://bostonstangs.com/ -> BOSTONSTANGS.COM -> Wanted -> looking for a better set of heads
Post Info TOPIC: looking for a better set of heads
mikefheath87


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looking for a better set of heads
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i have gt40 heads now.....the valve springs are my suspect. im looking to upgrade these for something better let me kno what u guys have.....partial trades also avalible for s trim setup, my car made 265 HP but shuts down at 4800 rpm wish i had a dyno sheet to show. 265 rwhp at 4900. then its like someone hits the key

-- Edited by mikefheath87 at 09:05, 2008-09-06

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bonzcnc


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Mike, I would keep the heads and throw a set of springs in them. Just my twocents.gif

-- Edited by bonzcnc at 09:22, 2008-09-06

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mikefheath87


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good call bonz- you were the first to mention the valve springs.... looks like everything else has been eliminated besides that..... i may just replace the springs.

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bonzcnc


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Be sure to get the correct springs!!!!!! I would recommend a spring kit (locks, springs, retainers).

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Jlandquist


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mike i told you that those heads need valve springs before you put the blower on. I would personaly have them gone threw....


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FoxStang93


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talk to 89Rustang...said he'd sell his GT40Ps for $200

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Retro FIVE O


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Look into the Trick Flow Valve spring kit. It is a direct fit with no machining required. Comes with the springs, Locks , retainers. Retails for around a $100.00 bucks. Just make sure you install them at the correct installed height.

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337 C.I.D. 390 R.W.H.P. 362 R.W.T.Q 11.44@120 in the 1/4 7.35@ 95 in the 1/8 1.60-60' N.A. 1988 L.X. Hatch 5.0L 5-Speed, 85,000 original miles
mikefheath87


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Jlandquist wrote:

mike i told you that those heads need valve springs before you put the blower on. I would personaly have them gone threw....




i knew you said something about the heads before a supercharger. i just couldnt remember what....but im staying N/A for a while and i just wanna be able to get more RPMS than 4800

ill look into that valve spring kit....i didnt know they canbe installed at different hights? ill have to look into what it involves before i go touching anything

-- Edited by mikefheath87 at 16:07, 2008-09-06

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YoLa


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mike keep those heads cheap hp, who really wants to spend a grand on a set of heads when they can spend 200$ or less. thats like 800$ + more for like 30 more hp probably less tho. I'm running the same setup as you and I just replaced my springs a few weeks ago with some crane cams part # CRN 44308-1 cost 119.95$ from summit. I'll give you the link.  easy beans for u prob make more hp as well....trying runnin ur mass air car on a speed density computer lol mines making stupid power with the SD comp for some reason with mass air!                       http://store.summitracing.com/partdetail.asp?part=CRN-44308-1               

-- Edited by YoLa at 19:30, 2008-09-06

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mikefheath87


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did u pull the heads off or do them in the car
wanna do mine?

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93_REEF_NOTCH


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mikefheath87 wrote:

did u pull the heads off or do them in the car
wanna do mine?




omg.gif I told you Mike it's done with heads still on the car,get an adapter to screw into spark plug hole so you can fill cylinder with compressed air, this keeps the valves closed when you remove locks/retainers. Borrow a spring compressor & your done in 1.5-2.0 hours tops.

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5 oh


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i have gt40 heads to and i put in the trickflow spring kit for .542 lift it was around $140.00 and its real easy to set up the spring height it comes with a little guage and the instructions are real detailed.

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