Hi,
new guy here, I have a 94 class A motorhome that has a gen5 454 in it w/ 80k on it. It has been making valvetrain/lifter noise. Anyway, I was revving it a bit to see if the lifters would settle down after I added a little sea foam and blam! Lots of mettalic noise and it stopped dead. It wont even turn over. My family camping plans just changed! I pulled the valve cover and nothing looks messed up. Went to drain the oil and coolant came out w/ it and kept draining the radiator out thru the oil pan plug. I am ready to tear into it (expecting the worst) but just wondered what could have happened. Where is the coolant getting into the oil? At least it's in my driveway.

Nate
Puyallup,WA

 

Through the head or cylinder walls.

 

Yank the engine and throw it away or use it for a core return on a replacement engine. The Gen V is a boat anchor anyway.

 

Sorry, but this site is dedicated to the 1982-1992 Chevrolet Camaro and Pontiac Firebird. The discussion about the 454, which was not an option on the aforementioned vehicles, as well as a motor home, does not exactly fit our website.

Sorry.