Well, for a few weeks now I've been having problems with my car bogging and misfiring really bad. Pulled into a parking lot today and smoke was pouring out of my exhaust, to the point where it looked like my car was on fire. Started it up later in the day and it hesitated, then bogged like crazy, idling at around 400 RPM, and antifreeze was just dumping out of the exhaust, theres a nice size puddle on the ground infront of each exhaust opening.

So, is this my head gasket, intake manifold gasket, or some other thing that i'm not aware of?

Any help would be appreciated...

 

dude that sounds like a head gasket to me

 

Head gasket..Intake does not have water circulate through it on a LT1.

 

If you are unsure that it's a head gasket, do a cooling system leak down test but since it's burning off in the combustion chamber (white smoke out of the exhaust) coolant is leaking into the cylinder and probably a head gasket. Not a big deal to change (do both sides), just take your time and do it right. Don't forget the apply thread sealant (like ARP thread sealant or teflon liquid thread sealant) to the head bolt threads. Be sure and follow the torque specs and sequence. Also, make sure you use new intake gaskets and RTV in the front and back of the block where the intake meets the block. If you have any questions along the way, post them here, plenty of experience on this forum.

 

As already stated LT1 intakes are dry so best case scenario you're replacing a head gasket....



Mike