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Old 06-25-2006, 01:48 PM
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74fj40 74fj40 is offline
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Thanks - I think we're going to need it.
Suppose it were a plugged passage in the block - what's the easiest way to clean it out? PLease don't tell me we have to take it out!!!!!!
Originally Posted by Uncle Ben
I would put my money on a plugged water passage in the block or a upside down thermostat. F's are natorious for plugged/caked up water jackets usually around the center and rear most cylinders. 2F's started putting steam holes at the head deck to relieve dead coolant movement problem. Heater cores usually flow from bottom to top (heat rises) while radiators flow from top to bottom.

Good luck!

2005 Silverado 2500hd Duramax
1972 Toyota FJ40
1967 Porsche 912(100% stock)

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