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Author
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Topic: A deck height question
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Calcat
Journeyman Posts: 75
From: Los Angeles, CA
Registered: Feb 2002
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posted 11-29-2002 01:13 PM
   
Can anyone tell me what the deck height is on a 68 302. TIA
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V8 Thumper
Gearhead Posts: 3529
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 11-29-2002 02:40 PM
8.206", as with all 221-255-260-289-302 V8 Windsors  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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V8 Thumper
Gearhead Posts: 3529
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 11-29-2002 03:18 PM
...assuming of course that it hasn't been decked. That's the factory spec; likely to be plus or minus a few thou front to back and bank to bank ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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mstngjoe
Journeyman Posts: 64
From: Oregon
Registered: Aug 2002
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posted 11-30-2002 09:34 AM
There are some 73-76 blocks that have a 8.229 deck height. These could lower cr if you don't compensate with pistons and/or heads.------------------
My Mustang
My next engine
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mustangboy
Gearhead Posts: 670
From: Ont, Canada
Registered: Mar 2002
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posted 11-30-2002 10:42 AM
mstgjoe is there anyway to identify one of these blocks?I just pulled a 74 302 and filed it away for future use.------------------
1968 mustang j-code sprint.13.69@101 306cu.in, stock ported heads,weiand exellerator,650 holley DP,hedman hedders,comp 292 Magnum cam,4-speed,8 inch 4.11 detroit locker
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n2oMike
Gearhead Posts: 1590
From: Spencer, WV
Registered: Jan 2001
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posted 11-30-2002 12:50 PM
My D1ZM Mexican block had that 8.23" deck height... But had to be cut 0.058" down to 8.17" because of some #^%$% Probe pistons.I hope there's still enough metal in the decks for the 1/2" ARP studs to keep the Loc-Wire gaskets in check when the 200hp shot of the bottle is letting it's presence be known.  Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
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mstngjoe
Journeyman Posts: 64
From: Oregon
Registered: Aug 2002
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posted 11-30-2002 03:38 PM
Mustangboy:
Two books I have both indicate 73-76 blocks with the taller height. Neither of them specifiy a given casting #. However, I would guess that D1, D4 and D5 blocks are all possible. I'm not even sure going strictly by the assembly date would be a valid way to confirm. I should think the only way to be sure is to have it measured by your machine shop.N2OMike:
I'm glad you let me know about your Mex block. My Mex with an assembly date of 4K17 and a casting # of 75ZY-6015-AA has not been machined yet. I now wonder if mine too has the taller deck height. ------------------
My Mustang
My next engine
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