valve specs for a 67??? - Mustang Evolution

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Old 04-01-2007, 03:17 PM   #1
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valve specs for a 67???

hey does anyone know the specs for a 67 mustang coupe?
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Old 04-01-2007, 04:20 PM   #2
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Re: valve specs for a 67???

Wouldn't the proper question be, "What are the valve specs for the stock heads on a '67 302/351/390/427?
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Old 04-01-2007, 09:08 PM   #3
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Re: valve specs for a 67???

yea my bad i posted it real quick, for a 289, all stock but the cam i bought it from this guy an all he had to say was its a step above stock cam in it, an i wanna go over the valves but cant find the specs
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Old 04-02-2007, 09:47 PM   #4
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Re: valve specs for a 67???

On intake i dougt the intakes would be larger then 1.78" and the exhaust not bigger then 1.50". Were they 4V heads?
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Old 04-03-2007, 06:19 PM   #5
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Re: valve specs for a 67???

I thought the 4v was for the intake, the four holes as opposed to two. 4V heads?




AAHHHH must be the code on the heads. Nevermind. Cancel that.
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Old 04-03-2007, 08:19 PM   #6
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Re: valve specs for a 67???

i didnt check heads i was in a rush an half pissy so i just gave them a full turn since its a diff cam, seemed to quite it up tho
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Old 04-04-2007, 08:04 AM   #7
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Re: valve specs for a 67???

Quote:
I thought the 4v was for the intake, the four holes as opposed to two. 4V heads?
4v is a term from the 60/70's. Back in the day alot of heads were either made for a two or four barrel carb. The main difference was in the casting. example would be: On the intake on a 4v head you could stick three fingers standing on end, on a 2v head you could only put two. Alot smaller difference on the exhaust but the same outcome. With the demise of the carbureator went also the term. Like you say, today 4v would mean an actual four valve per cylinder head.
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Old 04-04-2007, 08:22 AM   #8
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Re: valve specs for a 67???

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Originally Posted by gearbanger67 View Post
i didnt check heads i was in a rush an half pissy so i just gave them a full turn since its a diff cam, seemed to quite it up tho
I think i get it now. Your talking about Valve lash. Is it a hydraulic cam, i would assume so if you used the term "full turn". If your adjusting by ear i usually loosen till there is an audible click, tighten till click goes away. Then another quarter to half turn usually does it. At a full turn you should be alright as far as not bottoming out the lifter, most lifter manufacturers allow .065 clearance. Do you have poly locks on the rocker studs or self-locking nuts? If you have poly's it can get a little tricky.
This is also contingent on your lifters being fully pumped up. If one or two have air you will have to readjust once it leaves. Did you install new lifters as well and if so did you soak them?
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Old 04-04-2007, 06:41 PM   #9
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Re: valve specs for a 67???

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Originally Posted by Drnaline View Post
4v is a term from the 60/70's. Back in the day alot of heads were either made for a two or four barrel carb. The main difference was in the casting. example would be: On the intake on a 4v head you could stick three fingers standing on end, on a 2v head you could only put two. Alot smaller difference on the exhaust but the same outcome. With the demise of the carbureator went also the term. Like you say, today 4v would mean an actual four valve per cylinder head.
Gotcha, I knew about the intake, just never got the heads part. Thanks
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Old 04-04-2007, 09:46 PM   #10
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Re: valve specs for a 67???

Not to be an *** or anything, but I just did some research. The 4V/2V heads are the same. I've seen it in several places that the only difference in the two on the engine is that with a 4V you have a 4 bbl carb that has 4 "cylinders" in the the intake(one for each barrel) and with a 2V you have a 2 bbl carb with 2 "cylinders" in the intake(one for each barrel). My "How to build Ford V8's on a Budget" book says the same thing.
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Old 04-05-2007, 02:34 PM   #11
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Re: valve specs for a 67???

what i did is what u ssaid i loosend them till they clicked then tightend an they seemed alittle loose so i gave them another quarter turn making it a full when it was all said an done, an as for the locking it was the nut not the poly
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Old 04-12-2007, 10:24 PM   #12
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Re: valve specs for a 67???

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Originally Posted by bullitt482 View Post
Not to be an *** or anything, but I just did some research. The 4V/2V heads are the same. I've seen it in several places that the only difference in the two on the engine is that with a 4V you have a 4 bbl carb that has 4 "cylinders" in the the intake(one for each barrel) and with a 2V you have a 2 bbl carb with 2 "cylinders" in the intake(one for each barrel). My "How to build Ford V8's on a Budget" book says the same thing.
Ford 335 engine - Wikipedia, the free encyclopedia
Quote:
Both a 4V (4-barrel carburetor) performance version and a 2V (2-barrel carburetor) basic version were built, both with 2 valves per cylinder. The latter had a different cylinder head with smaller valves, smaller ports, and open combustion chambers to suit its intended applications.
Speed-O-Motive's 408 Cleveland stroker kit - Tech Articles - Mustang Monthly Magazine

http://www.panteraplace.com/Tech%20I...2V%20ports.jpg

http://www.panteraplace.com/Tech%20I...2V%20heads.jpg

http://www.panteraplace.com/Tech%20I...%20tongues.jpg
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