whats the angle of the bolt hole on the newer heads

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05-30-2004, 01:08 PM

BOTTLEDZ28

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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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05-31-2004, 03:41 PM

mrr23

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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; 05-31-2004 at 03:52 PM.

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05-31-2004, 04:05 PM

BOTTLEDZ28

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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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