trouse40

iTrader: (3)

its a 94 lt1, any write ups? does it come out thru the engine bay or inside the car?

redneck01

iTrader: (3)

comes out through inside, but i loosened a lotta stuf and did it with my motor out. check lt1tech.com also try a search if you havent already

Fire67

iTrader: (3)

Supposed to come out through the inside... There's a writeup in here for 98+ cars, which is pretty much the same.

The BFH method works pretty well also...

OutlawZ

iTrader: (4)

you talking about the heater box????? if so have fun with it cuz it's a major PITA if you're not stripping everything out from behind the dash....

getting to the bolts is a pain but you gotta work on both sides of the firewall to get em...

the_merv

iTrader: (88)

I cut the front of it off and made a cover Panel, keeping the Heat.
I got rid if the little Vacumm Line goin in that is in the pic cause that whole thing stopped working. Heat works no problem.
This is what I got..

trouse40

iTrader: (3)

so i can do it like that and all the motors will still work fine? for heat and defrost?

the_merv

iTrader: (88)

Motors will work no problem, vents will work as long as you keep that little Black Vacumm Line. Mine all stopped workin, so I got rid of it.

trouse40

iTrader: (3)

so as lomg as i cut alone the firewall i wont cut anything i need?

the_merv

iTrader: (88)

Yup. You will have to cut a little out on the inside, where that metal piece is. If you leave it, you will block the air blowing from the Blower Motor. I am working on closing up all the gaps in there. Someone did it here also, they fiber glassed it all in.

NotACop97Z

iTrader: (7)

Fiberglass is messy and fun

NotACop97Z

iTrader: (7)

the_merv

iTrader: (88)

That's nice there..

Revelation Z28

iTrader: (10)

you have to take the dash apart to take the ac **** out???

to save myself time ill BFH the box

lethal93ta

yes to do it the right way the dash has to come out, its a days worth of work to do it.

Revelation Z28

iTrader: (10)

how do you unscrew the box assembly where the PCM is? or at all. on the firewall.

lethal93ta

theres 10MM bolts that hold it fast to the firewall the bad part is some are on the inside and some are on the outside. if the engine is still in the car there hard to get to.

Revelation Z28

iTrader: (10)

the ones on the side where the engine is i can get to, ive already tried.

the ones towards the PCM are on the inside?

Speed Density

iTrader: (38)

IMO you might as well delete all the HVAC if your going to remove the box in the engine bay. To much damn work with the engine in the car to do it nice and clean.

I just got done fiberglassing my heater box yesterday, got some bondo on it right now drying, will post pics soon.

Tony.

Revelation Z28

iTrader: (10)

im just thinking of getting rid of the condensor, and the lines running to the firewall for the AC. make a little more room and let my lid breathe more.

Speed Density

iTrader: (38)

That would be the only logical thing to do, remove the AC stuff itself but leave all of the box intact unless your doing the whole shabang of HVAC removal.

Tony.