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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: stepside86 on September 04, 2005, 04:16:00 pm

Title: 305 topend rebuilding
Post by: stepside86 on September 04, 2005, 04:16:00 pm
My 86 305 shoots out a puff of smoke on every start up. I was told the heads need new valve seats to correct this. My father said that if I only get the heads done they will cause oil to come through the piston rings. Is this true or can I just do the heads? Also any tricks to cleaning an intake manifold? I heard soaking it in diesel fuel cleans it. I don't have enough money to take it to a machine shop. Thanks in advance to anyone who can help me.

Title: 305
Post by: stepside454 on September 04, 2005, 04:52:00 pm
you dont need to get the heads done...just have new seals installed

Title: Re: 305
Post by: RSBAD454 on September 10, 2005, 06:02:00 pm
you can have new seals intalled, but how many miles are on it? Don't just bandaid the problem, do it correctly. Cleaning the manifold will require castrol super clean and a bead blaster.

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