Re: 90 ZR1: Oh crud, did I break it?
 

do an oil change and see what the oil looks like. the good/bad is you're closeish to corry henderson if anything did go south on you http://www.hendersonperformance.com/

Re: 90 ZR1: Oh crud, did I break it?
 

hopefully the previous owner didn't use dexcool in the car

Re: 90 ZR1: Oh crud, did I break it?
 

You might want to also check the MAP sensor hose. If it comes off, the car will run like crap.

http://i13.photobucket.com/albums/a2...oprearview.jpg

Re: 90 ZR1: Oh crud, did I break it?
 

What color is your coolant? Green or Orange? If it isn't green, you better replace both of the head gaskets. Dexcool destroys the gaskets in the LT5. Hopefully the previous owner wasn't foolish enough to put in Dexcool. You can save yourself a lot of grief by taking the beast to Corey Henderson and having him replace the head gaskets. While the engine is apart seriously consider porting and doing a 368. You won't regret it.

Re: 90 ZR1: Oh crud, did I break it?
 

Also check MAP if filled with oil.

Pete

Re: 90 ZR1: Oh crud, did I break it?
 

Good grief, this board is crazy helpful. If nothing else, I've learned this ZR1 crowd is way cool. That may sound odd but coming from the groups I've known before, I don't take it for granted.

The coolant is the standard green glycol stuff. I think it's safe in that respect. I'll look at that MAP sensor when I get some daylight.

I've read up on Corey and in fact have had a couple guys I know locally mention him & his shop. Nothing but good stuff. If it turns into a project, he's certainly going to get a call from me. First I'm going to go local. We do have a shop in town that's qualified on LT5 and recommended by a buddy of mine so I will give him a call in the morning as well.

I'm actually still astonished I'm getting any input at all, much less helpful input.

Re: 90 ZR1: Oh crud, did I break it?
 

Oh forgot.
Welcome to the jungle.
Happy Thanksgiving.

Pete

PS
Head gaskets are not very common unless overheated,run lean or something silly.

Can i get some pictures of your Firehawk?

Re: 90 ZR1: Oh crud, did I break it?
 

the only shop that I know of that does lt5 work in texas is corey, what's the name of this shop? not saying your buddy is wrong, but I just don't want to see you take the car to a shop that's going to do more harm then good.

Re: 90 ZR1: Oh crud, did I break it?
 

Yeah... I'm obviously more than a little concerned about the problem, seeing as how it's got me up at 3:30am.:dontknow:

Oddly enough, I don't have a bunch of pics of the 92 'hawk handy, but I'll pm you when I do, if you like.

Corvettes of Dallas has a service department and they're reportedly competent with the LT5. But don't worry... I've had enough experience with specialty cars that if they don't know what they're doing, the car will go elsewhere.

To be honest, I'm still on the fence about tearing into it myself. Thing is I still have the motor out of the GTO and I don't like the idea of having 2 cars in my garage pulled apart at once.

Re: 90 ZR1: Oh crud, did I break it?
 

I have a dealer near my place who was well known to be the place to take your car....i realized that was crap after they washed my engine and sprayed orange clean on it. if it was me, I'd drain the oil and go from there