my heater core is shot. its blowing fumes into my jeep and making me dizzy. i have heard i can put in a chevy heater core and it will produce more heat. is it possible and what chevy vehicles can i steal it from?thanks keith

you can lead people to the truth, but you cant make them understand it.

I think yo are referring to the Chevy BLOWER MOTOR mod, not the heater core. I don't have the info, parts #'s, but someone does or search.



Bob in Ma.

Bob is right, your talking blower motor upgrade. I put a new heater core in my CJ7 when I did this mod. You need a blower motor from a early 70s Blazer with the 350. Tell them it has AC before they ask. You will need to enlarge the hole in the firewall to 3 1/4" for the new motor fit. Make sure the plug on the motor does not touch the firewall.(pops the fuse and can burn wires, don't ask me how I know!) This is not a hard upgrade and well worth it. I was sick of smelling fumes from my old leaky heater core and with the bigger blower motor it is toasty warm even on the coldest days with a soft top. Good Luck!

1. Check here for the GM Upgrade (there are several sites on the Internet that document this upgrade, this is my favorite): <font color=red>GM heater Upgrade</font color=red>

2. The Motor is a Simemins replacement Motor, Look here for the <font color=red>Part Number</font color=red>

3. Take the time to refurbish the heater box... if you need an article on refurbishing the box and replacing the core... I can email you one.

I just got a brand new heater core and it set me back about
50 bucks . Easy to replace .


Jeff



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Just tell them you want a replacement motor for your jeep and they will probably sell you the larger motor. When I tried to buy the stock replacement for my 90 YJ (I didn't want to enlarge the hole in the firewall), I found out that everybody carries the larger motors as stock replacements. Nobdy had the small motor.

jerry
87 Cherokee 4.0, 90 Wrangler 4.2, 95 Wrangler 2.5

If you are going to replace both motor and core you are better to call around different parts stores I called a few and they had the prices reversed .One wanted more for the core than the motor the other was just the opposit.Naturally I got each from the cheapest source.

Ray
Learn to let go of what does not serve you ,but forces you to serve it
why does everyone ask if I am gonna paint it ?