New 21 stud V8 heads

JK1934

JK1934

Junior Member
I finally have some castings to machine after doing some pattern maintenance & having to find a foundry willing to cast them after the foundry we had been using were not interested in doing them anymore, it has taken a while & many people have been asking when I will have some over the past couple of years, thanks for your patience, I have 4 to machine up & if they are all ok I, will order more castings to machine

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Boy, you need a medium sized CNC mill - would make the machining so much more accurate and consistent. Also, you could easily touch-up the chambers, get all the stud holes in exactly the right places, etc..

It looks like these first ones are quality castings - you'll soon find out as the machining process starts!

Best of luck!
 
Bored&Stroked said:
Boy, you need a medium sized CNC mill - would make the machining so much more accurate and consistent. Also, you could easily touch-up the chambers, get all the stud holes in exactly the right places, etc..

It looks like these first ones are quality castings - you'll soon find out as the machining process starts!

Best of luck!
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Hi bored & stroked, thanks for your advice, I have been a Toolmaker for over 35 years & the last 15 years working for a medical device company making highly precise tooling. With a good machine & a digital readout you can get just as accurate positional accuracy with a manual machine as a CNC, I would like to add a CNC to my home workshop but unfortunately good used ones are hard to find over here & a new one of a suitable size for the job start at about $70K, I would have to sell a whole lot of heads to pay for that, we have been making the heads for about 20 years, one thing I do find that castings can be a little inconsistent as is the nature of casting & using a manual mill I can adjust the datum on each casting in relation to the jig so the bolt pattern is perfectly centered to the cast bosses & also the spark plugs are centered to the recesses, on a CNC that is not the case as we had used a CNC for a batch a few years ago & you do see a little variation, most people wouldn`t notice but thats the Toolmaker in me working to perfection as Toolmakers tend to do, thanks John
 
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Supertuner700 said:
Nice! Do you know costs yet?
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Hi Supertuner, I will have an idea on price after I machine them up, unfortunately foundry costs have risen considerably as everything has the past couple of years, the good thing for those in the US is our Aussie dollar is weak so will be much better value for you guys, our dollar is worth only about 66 cents to your dollar, thanks John
 
frnkeore said:
Do you have the original Ford drawing for the bolt holes?

If not, I have them.
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Hi Frank,
that would be good if you have them & you are willing to share a copy, I have reverse engineered off a set of NOS originals & measured a few other originals to get the sizes, if you have the original blueprints it would be interesting to compare sizes, my email is JK427@bigpond.com,
thanks John
 
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