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Cylinder Head Locating Dowel |
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PHAT69AMX 
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Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5926 |
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 Topic: Cylinder Head Locating DowelPosted: Sep/22/2011 at 8:13am |
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Cylinder Head Locating Dowels for 1970 & up with 1/2" head bolts.
Aware they are available from the vendors, but would anyone happen to know
the ID, OD, Length, or if they are the same as used by some other make,
and if you can get them from NAPA or some other local source, Jeep dealers ?
All my stuff on-hand is the early 7/16" head bolt stuff.
Hoping to be able to find some for 1/2" locally somewhere.
Rooted around in the garage, did find some, looks like
.50 Long x .625 +/- OD x .518 +/- ID
Now the thing is are they the same as used by some other car make ?
 Edited by PHAT69AMX - Sep/22/2011 at 9:14am |
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Hurst390
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Joined: Apr/20/2008 Location: secret Status: Offline Points: 5822 |
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Posted: Sep/26/2011 at 6:55pm |
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BB chevy i think?
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SC/Hurst Rambler
11.62 120 100% Street Legal |
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stickshifter
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Joined: Jan/17/2008 Location: Bed Rock Status: Offline Points: 573 |
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Posted: Sep/27/2011 at 5:18pm |
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I just make them when needed out of 5/8" chrome moly tubing. Just make sure the head can sit down flush on the block without a head gasket then you know they are not too long.
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SC397
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Posted: Sep/27/2011 at 5:43pm |
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I haven't had any luck at NAPA on those lately. The big block chevy dowels that I got have too thick of wall. I am going to do the tubing thing I guess.
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AmRacing
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Joined: Aug/26/2011 Location: North america Status: Offline Points: 11 |
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Posted: Sep/28/2011 at 4:17am |
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You dont need to used the doell-pin if you not have, but use a masking tape on the top to stick the head gasket at the right spot. Also push the head at top side ( intake side) get the bolts hole play,, you will get a bit more air flow. Also We have 4 doell-pin available if you want ! 450 474 7950
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1bad69amx
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Joined: Jun/24/2011 Status: Offline Points: 24 |
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Posted: Sep/28/2011 at 11:01am |
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I measured the heads on my 401 and they were a little under .625 I.D.
FYI... American Parts Depot sells Head dowels that need to be turned down to under .625 O.D. They were too big. Zach |
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Red Devil
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Posted: Sep/28/2011 at 1:13pm |
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I made some from 1/2" copper pipe - it's 0.625" OD. Needed light sanding on the OD to fit.
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AmRacing
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Posted: Sep/28/2011 at 5:40pm |
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The .625 is stock 1/2 bolts, the .560 is a 7/16 pre 69, The step doell-pin is the same seize
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whizkidder
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Joined: Mar/03/2008 Location: North Georgia Status: Offline Points: 2972 |
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Posted: Sep/28/2011 at 6:15pm |
Yeah... I usually put my engines together with masking tape 
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Ron Frost
marne1ancient @ gmail.com 910 nine two two 0563 "There is no limit to what a man can do, so long as he does not care a straw who gets credit for it. Charles Montague |
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RADAMX
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Joined: Jul/09/2007 Location: Tucson Az. Status: Offline Points: 188 |
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Posted: Sep/28/2011 at 6:47pm |
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You can use BBC on 69 and older blocks with 7/16 head bolts or
You can Use Pioneer Part # PF-310-25 for 1/2 head bolts
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AmRacing wrote: