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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

square or oval???

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Old Feb 12, 2011 | 08:24 PM
  #1  
cliffordingles's Avatar
cliffordingles
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From: Galvin, WA
square or oval???

the truck is an 86 f250 HD 4x4. im going to be putting all new exhaust on it, but i dont know if my heads now are oval or square bore. anyone know?
 
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Old Feb 12, 2011 | 08:31 PM
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dyingtolive
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From: Jacksonville, NC
Depends. What engine do you have?
 
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Old Feb 12, 2011 | 10:25 PM
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cliffordingles
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From: Galvin, WA
351w, had the stock holly 4bbl on it now gots an edelbrock.
 
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Old Feb 13, 2011 | 12:09 AM
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BlackBeauty351
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They "should" be square bore. At least my 351W is but it currently has Procomp heads. As I remember, the stock cast iron heads are as well.
 
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