Intake manifold bolts stuck

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JustinWeber32

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I am trying to remove my intake manifold on a 305 out of a 1983 GMC Sierra and I can’t remove two of the bolts for the life of me. There ain’t enough room to get a wrench all the way behind them, and the intake curved in front of them so I can’t get a socket wrench all the way on. I was going to use an extractor kit, but I can’t drill straight into them. I don’t have a welder available at the moment. Does anyone have an idea of the best way to remove these last two bolts?

Thank you
 

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mxer147

83 K20, 350 vortec, 465, 208, 14/10, 4.10, 33s
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Dig that oil goop out of there and you should be able to get a wrench on it, use a good quality 12 point, if needed, but prefer a 6 point. Worse case, dremel that crud behind the bolt head to get a wrench on it.
 

Ricko1966

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What brand of wrenches are you using, you may want to look at some with thinner ends another thing I would look at is socket to 6 point adapters I ll get you a pic,they've saved me on more than one occasion. BRB going to find a pic on the internet,too cold and late to walk to my toolbox. Tap a socket into place put one of these in the socket it's pretty self explanatory,pretty much eliminates the chance of rounding the fastener,and you can use them with your gear wrenches,great in hard to get to spots. Mine are 6 point,pictured 12 point. If I had seen 12 points when I got mine,I'd have gotten twelve. I'll bet there weren't 12s, 30 years ago
 

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JustinWeber32

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Dig that oil goop out of there and you should be able to get a wrench on it, use a good quality 12 point, if needed, but prefer a 6 point. Worse case, dremel that crud behind the bolt head to get a wrench on it.
Okay I’ll try that. Thank you.
 

JustinWeber32

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350
What brand of wrenches are you using, you may want to look at some with thinner ends another thing I would look at is socket to six point adapters I ll get you a pic,they've saved me on more than one occasion. BRB going to find a pic on the internet,too cold and late to walk to my toolbox. Tap a socket into place put one of these in the socket it's pretty self explanatory,pretty much eliminates the chance of rounding the fastener,and you can use them with your gear wrenches,great in hard to get to spots.
Thank you. I’ll try those tomorrow.
 

fast 99

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Just a plain old good quality box end wrench should get in there. Many cheaper brands are too thick. Probably to make up for the poor metallurgy.

Snap on, Matco, Cornwell, Mac
 

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