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06-06-2005, 04:18 PM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
302/5.0 Expert needed...PLEASE Help??
There is a hole in the block, passenger side, that goes all the way inside...."NOT AN ACCESSORY HOLE"....I have stuck a 12" screwdriver all the way in....hole is threaded and is about 1/4" in diameter.......pictures attached....>WHAT is it FOR??????
********PLEASE*************
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Safe Flyin, errrrr Drivin, Earl
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06-06-2005, 04:23 PM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
Pictures, I hope
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Safe Flyin, errrrr Drivin, Earl
Last edited by EarlsflyinCobra; 03-04-2008 at 07:48 AM..
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06-06-2005, 04:26 PM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
Can only get one per section....how do you guys get more??????
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Safe Flyin, errrrr Drivin, Earl
Last edited by EarlsflyinCobra; 03-04-2008 at 07:48 AM..
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06-06-2005, 04:29 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,392
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Not Ranked
Hmmm....don't remember my 351 having a hole there.....
Is it an oil pressure port? Is there oil in the engine?
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www.lykinsmotorsports.com
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06-06-2005, 04:34 PM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
Okay, sorry, I should have given more info.....I have located the oil pressure fitting hole, the water temp hole, and all other "known" holes. No oil in the engine yet as I am still building. I have been told, but with no assertiveness, that it is a clean out hole, it is and exhaust crossover hole, and lots of, hmmmm, I just don't know........................Please help?????
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Safe Flyin, errrrr Drivin, Earl
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06-06-2005, 05:49 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,392
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Not Ranked
Does everyone else just have it plugged? If so, I'd just plug it and move on.
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www.lykinsmotorsports.com
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06-06-2005, 07:06 PM
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CC Member
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Join Date: Mar 2005
Location: hilliard,
oh
Cobra Make, Engine: factory five roadster with a stock 87 302
Posts: 47
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Not Ranked
I've got an 87 302 HO in my factory five.I can't see in that area with the engine in the car,but it feels like just a plug.
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06-06-2005, 09:58 PM
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CC Member
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Join Date: Oct 2003
Location: Spokane,
WA
Cobra Make, Engine: Shell Valley, 351W
Posts: 183
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Not Ranked
I have a 84' 351 block. It has the same hole with 7\16"-14 bolt threads. It's only about 1" deep,. No plug, no worrys. My guess is it would be for an auto trans dipstick bracket.
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06-06-2005, 10:05 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
I think it is where one of the two factory brackets attach that the engine is hung from while being installed at the factory. They are the first thing to get tossed when a block is stripped.
Rick
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Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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06-07-2005, 06:27 AM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
Okay, the dipstick and strap theroy sound good but why would it not stop at a certain depth?? This one goes into the inside of the block?? I'm going by the machine shop and boneyard later today to see if I can see another one.....any other expert opinions???
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Safe Flyin, errrrr Drivin, Earl
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06-07-2005, 10:32 AM
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CC Member
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Join Date: Aug 2002
Location: Rockton,
IL
Cobra Make, Engine: Midstates work in progress, personally built 302
Posts: 328
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Not Ranked
Here's a pic of the back of my block. You can see the hole you're talking about and what's behind it. Plug or not, it's your choice. It just goes into the flywheel/clutch area.
I don't know the original purpose - maybe some sort of sensor that picks up on the teeth of the flywheel? Or a manufacturing construction hole...
Anyways, I think you can just leave it. I've run my engine without doing anything to the hole - no major oil spills or anything like that.
Hope this helps.
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You might be a redneck if you think the National Anthem ends with "...Gentlemen, start your engines."
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06-12-2005, 04:39 PM
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CC Member
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Join Date: Apr 2004
Cobra Make, Engine: SMC,but witha twist!JBL chassis 1 of 2 built
Posts: 71
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some of the fords used that hole for a knock snesor.while others drilled a tapped a hole on the pad behind the intake.Don't know what its original use was because I have seen them on blocks down in the late 70s too.Stan
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06-12-2005, 05:34 PM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
Zipzip, I finally got to a shop and found a block on a stand and it is just as your picture. The hole goes into the clutch area behind the rear wall of the engine.....thanks for your picture.... I now know I can leave it alone.....thanks all, Earl
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Safe Flyin, errrrr Drivin, Earl
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06-12-2005, 09:23 PM
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Senior Club Cobra Member
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Join Date: Jul 2001
Location: Evans,
CO
Cobra Make, Engine: NAF 289 FIA, 347 stroker with Weber 48's, building a '48 Anglia gasser, driving a '55 Chevy resto-rod
Posts: 3,119
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Not Ranked
Earl
I also wondered and "worried " about that hole," holes in engines are bad". Don't know what it is/was for but it has never leaked, weeped or anything else. The local Ford shop mgr wasn't sure why it was there, nor did a couple of his older mechanics there is nothing in the shop manuals about it either, at least for the American versions of the 289-302.
A Ford engineers"mystery" hole 
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"Breathe in... Breathe out... then move on with life. Lifes too short to sweat the small stuff"
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06-13-2005, 07:26 AM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
Yep, a mystery it is.....I have sinced looked at a half doze or so blocks and some go all the way through and some are only about an inch deep???? Go figure..................
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Safe Flyin, errrrr Drivin, Earl
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06-13-2005, 09:28 AM
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Member of the north
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Join Date: May 2003
Cobra Make, Engine: A Cobra
Posts: 11,207
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Not Ranked
Earl, I use that hole to ground the block to the frame. I also think if you have a standard trans, the pivot ball goes in one of the holes in the block, maybe this one.
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I'm a writer, feed the artist and buy a book.
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06-14-2005, 12:34 PM
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CC Member
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Join Date: Mar 2000
Location: Des Moines,
IA
Cobra Make, Engine: Sold my beloved Shelby CSX 4068, Gessford 427 Ford
Posts: 756
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Not Ranked
Earl
My '87 Mustang 5.0/T-5 has the same hole. Never was anything in it, 'cause I'm the original owner and I know nothing has been removed. I put a pipe plug it on my replacement crate engine. I didn't want anything getting into the clutch area.
Doug
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CSX4068, '69 Bronco, '70 BOSS 302, '87 Mustang GT, '08 Roush Trak Pak
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06-14-2005, 12:37 PM
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Ouch Ouch Hot Sand
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Join Date: Jul 2003
Location: Daytona Beach,
FL
Cobra Make, Engine: Street Beasts w/302 Twin Turbocharged....Under Construction!!
Posts: 1,796
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Not Ranked
Thanks Doug........
Oh, and by the way your second line in your signature section has also been stated as follows;
"Opinions are like assholes, everyone has one, and most of them "Stink"."
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Safe Flyin, errrrr Drivin, Earl
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07-05-2005, 02:59 PM
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CC Member
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Join Date: Jul 2005
Posts: 419
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Not Ranked
I have a 94 5.0 HO and it has a hole on the top and on the side.
Both, depending on application, were used for factory lifting devices is what I was told by a guy that used to work for Ford. Due to some clearance issue, they were removed after the motor was assembled..
Sound reasonable?
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