will 3.8 sc heads work on a 3.8 non sc motor? - TCCoA Forums
 
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post #1 of 16 (permalink) Old 11-27-2005, 08:19 AM Thread Starter
 
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will 3.8 sc heads work on a 3.8 non sc motor?

i need to replace my heads cause the passenger head gasket blew and the head ended up cracking?whats the best thing i should do?i find a lot of people selling sc heads i cant find any from an lx if its not possible to use sc heads what should i do?
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post #2 of 16 (permalink) Old 11-27-2005, 11:40 PM
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I don't believe the SC heads will work on a non SC engine. I would check with local parts stores or machine shops for another haed.
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post #3 of 16 (permalink) Old 11-28-2005, 04:28 AM
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You can use them. The SC head is beefier.

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post #4 of 16 (permalink) Old 11-28-2005, 07:49 AM
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I'm glad to know this as well. I have read else where that said the SC heads wouldn't work
Than you for setting me straight Joe.
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post #5 of 16 (permalink) Old 11-28-2005, 09:29 AM
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I bet they are beefier. I wasn't worried about the 93 3.8 I bought new blowing up, because I knew the superchargerd version was holding up OK. Boy was I wrong.

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post #6 of 16 (permalink) Old 11-28-2005, 12:30 PM
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post #7 of 16 (permalink) Old 11-28-2005, 02:17 PM
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What makes the SC heads better than the NA heads in terms of headgasket sealing is the location and number of coolant passages near the combustion chambers.

This is a 89-95 singleport NA head:



This is a 99+ splitport head (the coolant passage design is nearly identical to SC and 96-98 NA heads):



Notice the difference?

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post #8 of 16 (permalink) Old 11-28-2005, 09:18 PM
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yeah that head has been deckt a bid A

1989 Thunderbird SC & 1993 Thunderbird LX
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post #9 of 16 (permalink) Old 11-28-2005, 09:20 PM
 
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so would the splitport heads fit on a 97 3.8?
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post #10 of 16 (permalink) Old 11-28-2005, 09:35 PM
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Quote:
Originally Posted by 1lowbird
yeah that head has been deckt a bid A
say what?

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post #11 of 16 (permalink) Old 11-28-2005, 09:36 PM
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Quote:
Originally Posted by NiteFire
so would the splitport heads fit on a 97 3.8?
yes, but you'll also have to change intakes, throttle body, throttle linkage, egr tube, wiring harnesses, vacuum lines, and ALL kinds of other things.

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post #12 of 16 (permalink) Old 11-28-2005, 10:47 PM
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99+ Heads will work but is about a $1200 conversion, and you must find/make custom Return Fuel Rail.

edited for correct information -Thomas

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Last edited by Thomas; 11-28-2005 at 11:22 PM.
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post #13 of 16 (permalink) Old 11-30-2005, 01:27 AM
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Quote:
Originally Posted by 1lowbird
yeah that head has been deckt a bid A



Quote:
Originally Posted by NiteFire
so would the splitport heads fit on a 97 3.8?
As both Thomas and bowez said, it can certainly be done. Actually, 96-97 3.8L MN12's are the easiest to do the splitport swap in IMHO, since they already have DIS. Adding DIS to my 94 LX wasn't much fun.

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post #14 of 16 (permalink) Old 11-30-2005, 01:49 AM
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Quote:
Originally Posted by racecougar




As both Thomas and bowez said, it can certainly be done. Actually, 96-97 3.8L MN12's are the easiest to do the splitport swap in IMHO, since they already have DIS. Adding DIS to my 94 LX wasn't much fun.

-Rod

Though, SplitPortBird has shown us that with a custom EGR tube, (or obviously, deleting EGR, which was already known) the split-port swap can be done with a distributor

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post #15 of 16 (permalink) Old 11-30-2005, 02:01 AM
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Quote:
Originally Posted by Thomas
Though, SplitPortBird has shown us that with a custom EGR tube, (or obviously, deleting EGR, which was already known) the split-port swap can be done with a distributor
True. I'm just a fan of the better tunability associated with DIS over TFI.

-Rod

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2004 Mustang GT-The Driver-Intake/Exhaust/3.73's
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post #16 of 16 (permalink) Old 11-30-2005, 10:06 AM
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Quote:
Originally Posted by racecougar
True. I'm just a fan of the better tunability associated with DIS over TFI.

-Rod
I feel the same way. I want to switch over to DIS with an EEC-V computer so I can use an X-Cal2

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