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Author
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Topic: 289 differ from 302
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DONNIE1
Gearhead Posts: 292
From: conover nc
Registered: Jun 2002
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posted 03-05-2005 12:24 PM
   
I may be ing losing it., but sometime back ''did'' some say how to tell the diff...
here is a clue, there is a 1 1/2 spacer between waterpump and engine block.. the spacer is like, ribbed sorta... thanks..
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whiteknight289
Gearhead Posts: 1176
From: Wheaton, IL, USA
Registered: Mar 2004
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posted 03-05-2005 12:30 PM
I think that spacer you are referring to is the timing chain cover. If you follow it around to the driver's side of the engine, is the fuel pump bolted to it?Scott
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Moneymaker
Administrator Posts: 25406
From: Lyons, IL, USA
Registered: May 99
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posted 03-05-2005 01:00 PM
Casting number is the only way you can tell the difference.
They all look alike.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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427Fastback
Journeyman Posts: 59
From: N.Vancouver.B.C
Registered: Jan 2005
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posted 03-05-2005 01:14 PM
You can tell by the block part number above the starter.289s will be C4,C5,C6,or C7.302s start at C8 since 68 was the first year.66 and 1/2 and down 289s and all 271HPs use an alluminum water pump and different timing cover.There are many other differences as well------------------
68 Fastback 427MR 4 spd.Owned since 77.Deluxe interior,8000 tach,140 speedo,am/fm,tilt.
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n2oMike
Gearhead Posts: 2372
From: Spencer, WV
Registered: Jan 2001
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posted 03-05-2005 02:47 PM
289 and pre-82 blocks are functionally interchangable. The ONLY real difference between 289 and 302 shortblocks is 1/8" of stroke. All they changed to provide this were the crank and rods. They even take the same pistons.The first 1965 289's (and all 221-260's) had the weird 5-bolt bellhousings and a special timing cover for a factory aluminum water pump. These covers had big oil tubes sticking up out of the front of them. These old water pumps won't work on any other timing cover. 302's generally came with a 4-bolt harmonic balancer. 289's had three bolts. ------------------
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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kcode
Gearhead Posts: 3009
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 03-05-2005 11:34 PM
I think the 1 1/2 inch he is talking about is the difference between a 302 and 351 windsor on water port block entrance and the deck surface.Mike
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74merc
Gearhead Posts: 932
From: Demopolis AL
Registered: Jun 99
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posted 03-06-2005 01:18 AM
quote:
Originally posted by 427Fastback:
You can tell by the block part number above the starter.289s will be C4,C5,C6,or C7.302s start at C8 since 68 was the first year.66 and 1/2 and down 289s and all 271HPs use an alluminum water pump and different timing cover.There are many other differences as well
the C8 isn't definately a 302 either, my cousin's 68 Fairlane came with a 289. 302 in the lifter valley and on the heads, factory 289 crank and rods.
Vin reports 289.
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whiteknight289
Gearhead Posts: 1176
From: Wheaton, IL, USA
Registered: Mar 2004
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posted 03-06-2005 09:04 AM
quote:
the C8 isn't definately a 302 either, my cousin's 68 Fairlane came with a 289. 302 in the lifter valley and on the heads, factory 289 crank and rods.
Vin reports 289.
That just goes to show you how interchangeable the parts are...289 rotating assembly in a 302 block Scott
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427Fastback
Journeyman Posts: 59
From: N.Vancouver.B.C
Registered: Jan 2005
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posted 03-06-2005 01:01 PM
I have seen 289s hidden with in a 302 block.I am sure a 289 Service engine is C8 or newer number also.Just goes to show that numbers are only a general guide,best way is to measure the B&S..
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74merc
Gearhead Posts: 932
From: Demopolis AL
Registered: Jun 99
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posted 03-08-2005 12:11 AM
quote:
Originally posted by 427Fastback:
I have seen 289s hidden with in a 302 block.I am sure a 289 Service engine is C8 or newer number also.Just goes to show that numbers are only a general guide,best way is to measure the B&S..
measure the bull and the... oh, bore and stroke!! 
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n2oMike
Gearhead Posts: 2372
From: Spencer, WV
Registered: Jan 2001
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posted 03-08-2005 07:55 AM
289 crank has 1M written on it.
302 crank has 2M written on it.289 rods have ribbed caps.
Only the earliest 302's have ribbed caps and are labeled with a C8 part number. The vast majority of 302's have the weaker non-ribbed caps. ------------------
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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