LO3 build (could use some help)
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Car: 77 Y82
Engine: W72
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Axle/Gears: 3.23
LO3 build (could use some help)
I have tons of questions
First,I pulled the intake just now,and I need to drill the bosses for the hold down,
What size bit and tap should I use?
How deep should I drill?
I want to use factory hardware (that I don't have yet)
First,I pulled the intake just now,and I need to drill the bosses for the hold down,
What size bit and tap should I use?
How deep should I drill?
I want to use factory hardware (that I don't have yet)
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Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Thread Starter
Junior Member
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Car: 77 Y82
Engine: W72
Transmission: Super T-10
Axle/Gears: 3.23
Re: LO3 build (could use some help)
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
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Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
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Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
I have a spare spider if u want it .. I bought a new one for like 15$ on summit
Edit: I would use a spider and a center punch to mark the holes centerline before drilling
91' bird 305 TBI T-5, trick flow heads, 4.10 gears, full UMI setup, track times coming soon!
Edit: I would use a spider and a center punch to mark the holes centerline before drilling
91' bird 305 TBI T-5, trick flow heads, 4.10 gears, full UMI setup, track times coming soon!
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Thread Starter
Junior Member
iTrader: (3)
Joined: Oct 2012
Posts: 37
Likes: 0
Car: 77 Y82
Engine: W72
Transmission: Super T-10
Axle/Gears: 3.23
Re: LO3 build (could use some help)
I could use it,I haven't got one yet
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From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: LO3 build (could use some help)
I would strongly suggest that you have the drilling done at a machine shop. there will be issues that arise that you MAY not care to get into. not saying that it cant be done in your garage. but why risk it?
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