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  Who has 289 heads on 302

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Author Topic:   Who has 289 heads on 302
66bluefb
Gearhead

Posts: 331
From: Okla.City,Okla.
Registered: May 2002

posted 11-03-2002 05:56 PM     Click Here to See the Profile for 66bluefb   Click Here to Email 66bluefb     Edit/Delete Message   Reply w/Quote
My car has been running hot so I pulled my 66-289 heads off my 86-302 to re-drill my water jackets or steam holes.On my block the water jackets are at a 1:00 position. On the heads there at a 12:00 position. Now I have heard that I drill a 1/4 in. hole in my heads at the 1:00 position.Is that correct?How far do I drill? It looks like I can drill untill I hit a water passage.Thanks,Tony

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http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under
B-303 cam ,harland sharp roller rockers
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job
4 speed toploader
pony seats

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Moneymaker
Administrator

Posts: 18704
From: Lyons, IL, USA
Registered: May 99

posted 11-03-2002 06:54 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
You can drill all the way through.

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
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The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
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