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whats the angle of the bolt hole on the newer heads

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Old May 30, 2004 | 01:08 PM
  #1  
BOTTLEDZ28's Avatar
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From: Mass
Engine: 350 TPI
Transmission: A4
Axle/Gears: 3.23
whats the angle of the bolt hole on the newer heads

I need to have beveled washers made for the inner intake bolts on my HSR and I need to know the 2 angles.
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Old May 31, 2004 | 03:41 PM
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mrr23's Avatar
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From: orlando, fl usa
Car: 1986 pontiac TA
Engine: 360 HSR
Transmission: 700r4 3300 yank converter
Axle/Gears: 3.27 9 bolt
the bolt angle is 72*. so flat bottom and 72* top side.

Last edited by mrr23; May 31, 2004 at 03:52 PM.
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Old May 31, 2004 | 04:05 PM
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BOTTLEDZ28's Avatar
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From: Mass
Engine: 350 TPI
Transmission: A4
Axle/Gears: 3.23
thank you. i was 99% sure it was 72 but I wanted more proof. I ll be having some angle washers made up this week. my dad is a machinist so its not a big deal for him to make a few for me.
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