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3800 Exhaust Heat Sheilds by don297
Started on: 03-22-2014 12:18 PM
Replies: 5 (429 views)
Last post by: solotwo on 03-25-2014 08:01 PM
don297
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Report this Post03-22-2014 12:18 PM Click Here to See the Profile for don297Click Here to Email don297Send a Private Message to don297Edit/Delete MessageReply w/QuoteDirect Link to This Post
I'm wondering if I need to get exhaust manifoldheat sheilds for my 3800. It had them when I bought it but they were in bad shape, so I threw them out. Do I really need them or can I run the exhaust fine without the heat sheilds?
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sco77
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Report this Post03-22-2014 01:55 PM Click Here to See the Profile for sco77Click Here to Email sco77Send a Private Message to sco77Edit/Delete MessageReply w/QuoteDirect Link to This Post
Heat shields are put in place to shield radiant heat, since they do nothing for underhood temperatures, no problem not running them, but keep wires and things further away and insulated.

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86 Fiero GT 4spd - L67 swap: VS cam, GenV
98 GTP - Some mods

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hnthomps
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Report this Post03-22-2014 03:34 PM Click Here to See the Profile for hnthompsClick Here to Email hnthompsSend a Private Message to hnthompsEdit/Delete MessageReply w/QuoteDirect Link to This Post
I had to add a heat shield over my 3800 SC muffler because it was starting to melt the back of the trunk carpet. There are times where a heat shield is essential.

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smartaxel
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Report this Post03-23-2014 08:47 PM Click Here to See the Profile for smartaxelClick Here to visit smartaxel's HomePageClick Here to Email smartaxelSend a Private Message to smartaxelEdit/Delete MessageReply w/QuoteDirect Link to This Post
Same as Nelson. i had to add heat shielding. It was way too hot without shields. I too added muffler wrap also.
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Darth Fiero
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Report this Post03-23-2014 11:35 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by don297:

I'm wondering if I need to get exhaust manifoldheat sheilds for my 3800. It had them when I bought it but they were in bad shape, so I threw them out. Do I really need them or can I run the exhaust fine without the heat sheilds?


W-body 3800 cars (Impala, Monte Carlo, Grand Prix, Regal, etc) will have the heat shields. C/H/G body cars will not (at least I've never seen them on one of these cars).

FYI the front cast iron exhaust manifolds are the same for all 3800 equipped FWD cars. The rear tubular steel manifold is different. W-bodies are different than what was used in the C/H/G body cars.

Also important to note that GM changed the way the heat shields were held onto the manifolds on Series 3 engines. So a set of Series 3 heat shields may not work on Series 2 manifolds.

-ryan

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solotwo
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Report this Post03-25-2014 08:01 PM Click Here to See the Profile for solotwoSend a Private Message to solotwoEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by smartaxel:

Same as Nelson. i had to add heat shielding. It was way too hot without shields. I too added muffler wrap also.


My car didnt have a sheild so I wrapped the exhuast and installed several layers of themo padding inside the trunk. Still gets warm!!
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