LT1 thermostat leak


pizon6979
05-03-2009, 07:06 PM
Hey guys, I have '96 LT1 In my '69 Camaro, I have a leak at the thermostat outlet. It has a new water pump, thermostat and seal, I have tried taking it apart cleaning every thing, I then did a pressure test and it is still leaking! There is a little bit of coolant around the base of the outlet and when you "rock" the outlet back and forth you can see it move, definitely not sealing. Does any body have an Idea? Any help would be great!! Thanks!!:banghead:

Morley
05-03-2009, 09:13 PM
Check the housing for cracks. The aluminum tends to work harden and crack from engine vibration.

pizon6979
05-04-2009, 05:26 AM
I will check it out thanks!

stetzz05
05-24-2009, 06:52 PM
did the presseure test come up right?.. should be bout 12lbs check for cracks also around threads on the block

pizon6979
05-25-2009, 07:33 AM
I checked every thing out and there where no crack's. I made a gasket to go around the o-ring and seal the out let to the water pump, It work's great! Thanks for the input.

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