well my build is a 2000 ls block with a 94-95 gsr head my motor is a turbo setup i no this is the all motor fourm but way more of you guys are lsvtec and all of the reading ive did so far has been from this fourm well thought i had it all setup and running fine untill i was checking over everthing and seen coolant leaking from the dizzy side its like right by the coolant bypass hose it looks like if i add water to the rad it will leak right from there so i am thinking the pipe plug is not down far enough ? i used a gsr head gasket thanks for the help

cliffs: car is leaking coolant dizzy side by coolant bypass hose but from the head or block

 

are both the ports off you thermo housing in use? when i put my motor together, i dont know if i mismatched years on some parts, but my thermo housing had an open port not being used that i had to plug.

also, i think the consensus is you should match the headgasket to the block not the head. but im not sure that will cause your issue.

 

hey thanks for the help found out the issue the dowel was sticking up just enough to keep it from sealing