GT 40 heads on ebay - Ford Mustang Forum
 
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post #1 of 13 (permalink) Old 08-07-2013 Thread Starter
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GT 40 heads on ebay

I see that there are some gt40 aluminum heads on ebay for around $550 for the pair. Has anyone had experience with these, the add says that they are cast in australia and that they are fully assembled. Not sure if they are actually a Ford product. I have a 91 lx with a 5 liter. I have a cobra intake (upper and lower) and I am currently looking for the best heads to go with that intake. The car is a weekend cruiser/summer driver. Thanks.
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post #2 of 13 (permalink) Old 08-07-2013
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A link would be useful.

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post #3 of 13 (permalink) Old 08-07-2013
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Im assuming they are the gt40x heads?

1998 GT - CAI, trickflow intake, 3.73 gears, O/R x-pipe, flowmasters, short throw shifter, 24lb injectors. 155k miles
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post #4 of 13 (permalink) Old 08-08-2013 Thread Starter
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post #5 of 13 (permalink) Old 08-08-2013
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Honestly I have read over and over to stay way from these heads, when i was in the market earlier this year. Maybe some here has purchased them but pretty sure anyone else here will tell you the same. In this realm you absolutely get what you pay for.


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post #6 of 13 (permalink) Old 08-08-2013
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Quote:
Originally Posted by poetnprophet View Post
Honestly I have read over and over to stay way from these heads, when i was in the market earlier this year. Maybe some here has purchased them but pretty sure anyone else here will tell you the same. In this realm you absolutely get what you pay for.
What's wrong with these heads? It would probably be a good idea if you get them to go ahead and upgrade your pushrods and springs as well as invest in some ARP head bolts. There are a lot of little things people don't think about when doing H/C/I upgrades that can cause problems down the road. Honestly, if I had the money I would probably make an offer on these heads. The gt40x heads are a decent upgrade for sure. Along with intake and cam you can easily make over 300hp with them.

1998 GT - CAI, trickflow intake, 3.73 gears, O/R x-pipe, flowmasters, short throw shifter, 24lb injectors. 155k miles
1995 GT vert - 1 of 36 5.0 Appx. 400,000~ factory motor miles (totaled, in garage)
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post #7 of 13 (permalink) Old 08-08-2013
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With the rockers, guide plates, studs, shipping and tax.... You are getting quite close to the price of AFRs or something similar.

I looked at these when I started planning my build, although I didnt have an intake, I ended up getting a Top-End kit for a reasonable price. Seemed like more of a deal and it removed the guessing part.
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post #8 of 13 (permalink) Old 08-08-2013
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Quote:
Originally Posted by johnGT View Post
What's wrong with these heads? It would probably be a good idea if you get them to go ahead and upgrade your pushrods and springs as well as invest in some ARP head bolts. There are a lot of little things people don't think about when doing H/C/I upgrades that can cause problems down the road. Honestly, if I had the money I would probably make an offer on these heads. The gt40x heads are a decent upgrade for sure. Along with intake and cam you can easily make over 300hp with them.
I don't know exactly, I just know I've read numerous times that some of the "knock off" alum heads on ebay tend to have issues...OR, as you said, the cost of upgrading a lot of the valvetrain would then lead you to the cost of comparable name brand heads.

Looking at this item further, maybe these aren't the knock offs. They don't say whether they are x heads or not so at a quick glance they look to be like these:
New SBF Ford Aluminum Cylinder Heads 190cc 289 302 351W | eBay

My first Mustang
1986 5.0 GT Convertible: TFTW 170, Comp xe270, Edelbrock Performer, Eibach ProPlus kit, 4 wheel disc, T5z, 3.55.....273hp @5000, 302tq @4500
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post #9 of 13 (permalink) Old 08-08-2013
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A few more links to reviews on I've read:
gt40 heads vs Pro comp
Why are PROCOMP heads soo cheap??? - Ford Mustang Forums : Corral.net Mustang Forum
Another procomp aluminum head thread.. - Ford Mustang Forums : Corral.net Mustang Forum

My first Mustang
1986 5.0 GT Convertible: TFTW 170, Comp xe270, Edelbrock Performer, Eibach ProPlus kit, 4 wheel disc, T5z, 3.55.....273hp @5000, 302tq @4500
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I bought a set they are very. clean outta the box I'd upgrade the.springs though other than that they look great unfortunately I.haven't..installed yet waiting on.cash to.build my 347....but they defiantly look like they will.be worth it

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post #11 of 13 (permalink) Old 08-09-2013 Thread Starter
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Great posts guys, thank you, I know there are many heads out there, but here is the loaded question: what is the best head to go with my intake? I also have 32lb injectors, long tubes, x pipe, and flowmasters.
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If price is a problem.though snag a lair of gt40 irons from.a junkyard and port them

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I would be very leery of those heads.. 550$ shipped for two heads?? take into account shipping them will be roughly 50-60$ plus the materials it took to make those heads, the valves, guides and springs the cost starts adding up. You really gotta think wow they must be using some crappy materials to make any profit off these.. I would search the classifieds for a pair of twisted wedge 170's you can have those for a few more bones and they will make ALOT more power. Plus you're not running a inline 2.02 intake valve on stock pistons.. With a TW head you can. I would say hold off and wait. Like the old saying goes! "good things come to those who wait".

Oh and i almost forgot, reading down on the list of parts that you should run with those heads it lists rockers that are supposedly supposed to net you 35HP?! lol these rockers better be made out of magic or something that's a bucket of bull sh it.

230897045318 correct 1.6 stainless steel full roller rocker arms with a set of 16 poly locks (35hp gain)
Oh god.. and they are made in CHINA... you'll be finding the needle bearings in the oil pan.

It's all for the love of hot roddin'!!

Crystal White 1995 GT Convertible, TFS Twisted Wedge 170's, Steeda 19 cam, Trickflow 1.7 Rollers, Tmoss ported explorer lower, PowerDyne Blower @ 7psi, AMK Racing Products Shorty Headers, Catted X-Pipe to Flow Master 40's, COBRA T-5 With MGW Short Throw 365rwhp 351rwtq
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