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350 trouble

Old 03-18-2012, 10:46 PM
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Join Date: Mar 2012
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Default 350 trouble

I have a 92 k1500 with a 350. I blew a head gasket two weeks ago and replaced that. Less than 24 hours after getting it put back together it started running bad again (shaking, loss of power, slight smoke before i shut it off). I tore it apart again and had blown another head gasket. I replaced the gaskets for the second time thinking maybe the replacement gasket was bad when i bought it. I have had it put back together now for about 3 days and at first it was running alright but now its lacking ALOT of power on acceleration, can barely make it up a small hill going 30. The oil pressure when i start it will be around 45 but as i drive it the pressure will end up around 15-30. It doesn't seem to be gaining or losing any level of oil and the antifreeze level seems to be staying about the same. I don't smell anything out of the ordinary in the exhaust gases. I have no idea whats going on and need to figure it out ASAP. Any help is reeeallly apreciated!!
Old 03-19-2012, 07:12 AM
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Did you have the heads checked for warpage when you had them off? Valves adjusted properly? Make sure intake is sealed? Timing set correctly?
Old 04-18-2012, 08:10 PM
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Join Date: Nov 2010
Posts: 106

What does the temp hand say ? Like said check timing 0 degree.
Sounds like a clogged cat. Did you get all wires back especially the grounds at t stat.
Like said^^ may have valves to tight. Does it back fire any?
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