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TPI Throttle Body bolt finish?

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Old 12-02-2018, 07:06 PM
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Car: Yellow 85 IROC [Rare 1 of 205 GU6]
Engine: 5.0 TPI(30-over w/forged internals)
Transmission: 700R4 (NASCAR built)
Axle/Gears: GU6 3.42
TPI Throttle Body bolt finish?

Rebuilding my 85 IROC 5L TPI. What is the correct OEM finish for the TPI Throttle Body-to-Plenum bolts? Oiled? Black Oxide? Other?

Thanks much!
Old 12-02-2018, 08:31 PM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
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Axle/Gears: J65 pbr on stock posi 10bolt
Re: TPI Throttle Body bolt finish?

I think they are black oxide
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