1/2 inch head studs for 308 with 262 head
I am planning to convert my head/block over to 1/2 inch studs for the improved clamping. Basically it's part of the 'do everything on my wish list while she's disassembled' plan. The only part number I've found is Caterpillar 3H7927, which Mr. Bennett is credited with on Ken Cate's site. It fits the Clifford Head. Will this work with the 262 head on a 308, or is the 262 taller, and therefore needs a different stud length?
Dale Cooper has bolts, but not studs. I'm looking to go with the questionably more aesthetically pleasing stud arrangement.
Any one with stock or a good part number or source for 1/2 inch studs, please chime in. Thanks.
Hudsonly,
Dave Carpenter
Dale Cooper has bolts, but not studs. I'm looking to go with the questionably more aesthetically pleasing stud arrangement.
Any one with stock or a good part number or source for 1/2 inch studs, please chime in. Thanks.
Hudsonly,
Dave Carpenter
0
Comments
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I'm hope your block is already tapped for 1/2"??? I converted 2 308's back-in-the-day and I'm here to tell you I wouldn't do it again. I'd find a machine shop to do the job. Admittedly this was back in the 70's, so perhaps tools have improved since then.
Those chrome alloy blocks are a b$#@ch to drill out.
Hudsonly,
Alex Burr
Memphis, TN0 -
I saw a while back about crank or rod studs for the 454 Chevy block will work in a Hudson block. I have Hudson studs and it appears there are two lengths. Don't know why, maybe longer ones are where brackets attach. And I agree that tapping a 7/16" block for 1/2" studs will be a chore. One reason I bought a '56 308 for my resto. project0
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Dougson,
The guys are right the block can be drilled and tapped by hand but with 21 holes it gets tedious. The best method is have an automotive machine shop tap to ensure threads are accurate otherwise the Cyl head wont slide over the studs.
Cifford Heads are at least 1/2" Thicker than Hudson.
New ARP Studs can be obtained from Randy Maas
or, suggest going to Dorman's Web Site to look up the size need & Part Number then go to an Automotive Store to order.
Dorman makes hundreds of sizes But most Stores today wont bother to look it up)[/I0 -
Little tip for those who don't know, Hudson heads were 2 inches thick when new, exactly 2 in!0
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About 20 yrs. ago I did it to a 51 block. I think it took about 6 drill bits and a few taps to get the job done. Around the 5th hole, I concluded I had made a huge mistake. I finished, but it wasn't fun. It did look good though.0
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ski4life65 wrote:About 20 yrs. ago I did it to a 51 block. I think it took about 6 drill bits and a few taps to get the job done. Around the 5th hole, I concluded I had made a huge mistake. I finished, but it wasn't fun. It did look good though.
Got you beat - took me 8 drill bits on the first, and 7 on the 2nd block. I forgot how many taps I busted, but enough to raise the price of the company's stock a few points.
Hudsonly,
Alex Burr
Memphis, TN0 -
DavidC wrote:
You are asking for trouble with studs. After you run it a few miles and have to remove the head, good luck. Use bolts and remove with now trouble. My cylinder head has 132,000 miles with bolts, and still no problems. And you all know how I drive my Hudson. Walt.I am planning to convert my head/block over to 1/2 inch studs for the improved clamping. Basically it's part of the 'do everything on my wish list while she's disassembled' plan. The only part number I've found is Caterpillar 3H7927, which Mr. Bennett is credited with on Ken Cate's site. It fits the Clifford Head. Will this work with the 262 head on a 308, or is the 262 taller, and therefore needs a different stud length?
Dale Cooper has bolts, but not studs. I'm looking to go with the questionably more aesthetically pleasing stud arrangement.
Any one with stock or a good part number or source for 1/2 inch studs, please chime in. Thanks.
Hudsonly,
Dave Carpenter0 -
Only downside I can see is an aesthetic one. Acorn nuts, which are really attractive on flatheads could not be utilized, unless someone makes an acorn "cap" to fit onto the bolt head.0
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Isn't that pretty!
What finish did you do your intake with ?0 -
Hudson308 wrote:
Yep!! Just like that.0 -
Thank you all for the tremendously valuable responses.
It would appear the consensus is to have professional tap job done, and ask self whether the bling is worth the maintenace fiasco.
Yes, I am definitely going to have a professional machine shop due the tapping.
Yes, the look of the acorn nuts was the driving force. What price vanity? Look at that beautiful yellow block! Who can blame me?
Walt and others, I now fear a future head removal post-stud install. I was planning to use one of Dale Cooper's modern head gaskets, so the adhesion problem would be real. Only reasonable stud option would be to ensure the studs are easily removable, perhaps Allen-drive like some modern studs, and set in plenty of the anti-seize sealants recommended in other forum strings? Will talk with Mr Maas.
Other option would be to chrome 1/2 inch bolts from Mr. Cooper- not quite as pretty as acorns, but still flashy.
Thanks again to everyone who replied.
Dave C0 -
FYI
The ARP Studs Randy Maas (maasfh@ntslink.net )sells have Allen Wrench tops for ez to install/remove........
JC Whitney and others sell chrome Acorn Nuts0 -
What about chrome acorn bolt caps. Still get the look you're after without the hassle. Looks like they offer difference sizes depending on whether you go 1/2" or keep the 7"16" BOLTS. Gotta love the shinny aluminum intakes. One of those is in my future as well.
-Rich
Attachment not found.
http://cgi.ebay.com/ebaymotors/Chrome-Bolt-Toppers-Acorn-caps-Hot-Nut-Covers-METAL_W0QQitemZ260454488264QQcmdZViewItemQQptZMotorcycles_Parts_Accessories0 -
My 49 came to me with a cracked Clifford head that was studded and yes
it was a pain to get off. After getting the head repaired I got the ARP studs
that have an allen head recess on the fine thread end. I coated the full
length of the studs with never seize as part of the problem getting the
head off was the dissimilar metal corrosion between the studs and aluminum
head. Haven't had to remove it yet but my thinking is the studs should turn
right out and the never seize should also stop the water from leaking past
the threads on the deck. Finished it off with chrome acorn covers on the nuts
from http://www.thenightprowlers.com/ at like $.60/pc.
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Oh HELL yes! Consider that idea pilfered.
Very cool! 0 -
yes, i have to say waaay cool. 308 winchester!0
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Hudson308 wrote:
That is real classy,
love the super clean details and the color, what can i say:D
Mike0 -
308-
That's a heck of an idea!! Very cool! Don't be surprised if you see these on someone else's Hudson in the future. "308" on the casing is a super touch.;)0 -
Ol racer wrote:FYI
The ARP Studs Randy Maas (maasfh@ntslink.net )sells have Allen Wrench tops for ez to install/remove........
JC Whitney and others sell chrome Acorn Nuts
This sounds like the most reasonable plan, to me. Solid mechanical performance and the "look".0 -
Thanks again to all. I now have a solid plan for professionally drilled 1/2 holes, grade 8 bolts, and chrome nut caps. Perfect!
Dave Carpenter0
This discussion has been closed.
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