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Old 02-21-2011, 06:12 PM
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leaking head bolts SBC 350

Hey all, me again. Well as some of you know I got my engine running. Unfortunately I have some fluid leaking along the bottom edge of one of the heads where it sits on the block.
At first I thought it was oil but now I'm pretty sure it's coolant. I determined this by removing the valve cover and exhaust manifold and wiping the wetness with a clean paper towel and it's not alot but it's the color of greeninsh as oppose to clear like oil which I dabbed a little from the rocker assembly to compare.
I did use sealant on all the bolts but not alot. I just put it on the threads. Now what I need to know is should I remove all the bolts and add more sealant? If so, do I do this one at a time or should I remove them all so I re-torque in correct sequence?
I'm not seeing any evidence of burning coolant out of the exhaust so I don't suspect the longer bolts are a problem. I do see wetness around the shorter exposed head bolts along the lower edge.
I hope I am giving a good description of the problem to be as clear as possible.
Have other questions with other issues but this is the most concerning.

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Old 02-21-2011, 07:21 PM
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I would try retorquing them to make sure u didnt miss one. Has the coolant level dropped at all?
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Old 02-21-2011, 07:28 PM
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If you do need to reseal them pull them, reseal them and retorque them one at a time, so that you don't chance losing the head gasket seal.

Use either a teflon paste plumbers seal or RTV silicone, but don't mix the two. Teflon tape is not good to use, so don't try that.
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Old 02-21-2011, 08:53 PM
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Wouldn't the ARP sealant help in this situation?
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