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Author
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Topic: 28ounce in a foxbody????
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Stangn5oh
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Member # 10875
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posted
 
 
i wanna buy a shortblock rebuilt 302 that has a 28ounce balencer crankshaft balenced to the 28ounce and 28ounce flywheel.
my question is
if balencer, crankshaft, and flywheel is all matching "28 ounce" it shouldnt be a problem to swap it in a 89 5.0 which comes with a 50ounce right???
i would still like to keep the fuel injection.
2nd is having the shortblock 28ounce does that mean its only for carb applications?
i know you cannot mix 28ounce with a 50ounce but if all is the same no problem atleast thats what i think
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88 lx
17 Renegade turbo
18 Compass 4x4
Hit the gasser, go faster, all u heard was dual exhaust n flowmasters.
Posts: 1643 | From: Sacramento | Registered: Apr 2011
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racsirx
CAFords OG
Member # 1710
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posted
28oz is fine, even Zero balance is fine.
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88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
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GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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wilit
Mustang Messiah
Member # 3367
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posted
The imbalance has absolutely nothing to do with fuel injection or carbueration. It has to do with keeping the crankshaft balanced on both ends. Whatever the crank is balanced to (0oz, 28oz, 50oz) the balancer and flywheel have to match.
From what I've read, the reason Ford went to a 50oz imbalance was because it required less metal to be used in casting the cranks, thus saving money. Since the 351w was essentially a truck/large car motor at the time of the transition, it needed to be more robust, so they kept it at 28oz.
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"If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr.
Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003
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Stangn5oh
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Member # 10875
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posted
you both are very reputable and thats all i needed to hear, thank you for the speedy responses lee and willit
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88 lx
17 Renegade turbo
18 Compass 4x4
Hit the gasser, go faster, all u heard was dual exhaust n flowmasters.
Posts: 1643 | From: Sacramento | Registered: Apr 2011
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turbo50
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Member # 6700
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posted
These guys are both correct, I'd make sure its a roller block if goin efi, if not remember that when its distributor gear time.
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.........when was the last time YOU built something with YOUR own hands?
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Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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SLOWSN95
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Member # 8269
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posted
Also, most 28oz blocks do not have the mounting points in the lifter valley to bolt down the "spider" that holds the lifters in place. They may have a knub for where the holes go, but probably won't be tapped. In the older blocks, it may not even have it.
And if the block is an original non-roller motor, then more than likely the lifter housings are too short for a regular hydraulic roller lifter.. so the top of hyd roller lifters would be sticking out too far.
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94' GT
347 Stroker
MM Suspended
2003 SB SVT Lightning
Pullied and Lowered
89'Hatch-SOLD
Posts: 2214 | From: 510/east bay | Registered: Mar 2008
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SLOWSN95
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Member # 8269
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posted
quote:
Originally posted by turbo50:
These guys are both correct, I'd make sure its a roller block if goin efi, if not remember that when its distributor gear time.
Definitely. Do NOT run a steel dizzy gear with a cast iron cam or vise versa.
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94' GT
347 Stroker
MM Suspended
2003 SB SVT Lightning
Pullied and Lowered
89'Hatch-SOLD
Posts: 2214 | From: 510/east bay | Registered: Mar 2008
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Stangn5oh
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Member # 10875
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posted
This should help a lot more...
http://sfbay.craigslist.org/sby/pts/3389420010.html
He states its from an 89 mustang, spoke to him and he said he built it with his teacher at de Anza college. I plan on buying an E-cam and edelbrock performer heads with 1.6 or 1.7 idk yet because I still don't know the difference.
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88 lx
17 Renegade turbo
18 Compass 4x4
Hit the gasser, go faster, all u heard was dual exhaust n flowmasters.
Posts: 1643 | From: Sacramento | Registered: Apr 2011
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