Valve Question

kpack5982 · Mar 26, 2014

A friend is getting together parts to assemble a bare set of heads he has. They are stud mount gt40 aluminum heads with 2.02 intake and 1.60 exhaust valves sizes.

We are trying to find the correct length valves to buy for his heads. It seems this isn't a very common topic, or at least not an easy one to find. Could someone point us in the right direction as far as where to find the valves we need for his heads? From what I got I think he needs standard length, but I'm not sure. Any information would be great. Thanks

Gearbanger 101 · Mar 26, 2014

GT40 aluminum heads to the best of my knowledge only came set up for pedestal mount rockers, not stud mounted rockers. They also were equipped with 1.94" intake valves....not 2.02".

kpack5982 · Mar 26, 2014

They're actually a knock off set of heads that he has had thru gone through and ported for a 347 I'm not sure what brand they are. They're item # 260991200154 on ebay

mikestang63 · Mar 26, 2014

Those are not GT40 heads. You can see right in the picture the pedestal mounts. Did you notice this in the auction?

PHOTO ONLY FOR ILLUSTRATION THESE ARE BARE HEADS

Ported? No flow sheet or picture of the actual head?

Get a set ot TW 170's or 11R and be done with it.

Gearbanger 101 · Mar 27, 2014

I'm gonna take a wild guess and say those are Pro Comp heads.....which for lack of a better word, are "junk". Piss poor machining, casting flash all over the place, misaligned ports. If your buddy is going to cheap out, have him buy a set of used quality heads like Trick Flows, AFR's, Ford Racing Edelbrock, etc

...unless of course he was impulsive and just bought the heads already without researching them. In which case, he'd better make friends with the owner of the local machine shop.....cause I have a feeling he's going to be bringing him a lot of business.

kpack5982 · Mar 27, 2014

He already bought these heads. He can't ever save money for the more expensive items. I've tried to rationalize with him about it, but it doesn't do any good. Its not like he can't get the money, more like he can't keep a hold on it and blows it. It was enough of a pain for him to just save enough for these heads apparently. I told him he'd have to have them gone through by a machine shop and he says he has a good machine guy hes known from way back, who's going to go through everything, clean them up, port em and assemble everything when he gets all the parts.

Anyways, any help on the where to find correct valves?

Gearbanger 101 · Mar 27, 2014

Try Summit Racing for your valves.

Your buddy really needs to find out what brand head these are before he goes spending anymore money.

kpack5982 · Mar 28, 2014

Tell me about it. Is there a way to measure to find out what length valve would go in it, or is that just something the head manufacturer would know?

Gearbanger 101 · Mar 28, 2014

kpack5982 said:
Tell me about it. Is there a way to measure to find out what length valve would go in it, or is that just something the head manufacturer would know?

Without knowing exactly what kind of head it is, I would only be speculating as to the valve size. Tell your buddy not to be so lazy and contact the Ebay member to find out.

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