S/C engine compared to regular 3.8 - TCCoA Forums
 
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post #1 of 8 (permalink) Old 05-28-2010, 02:44 AM Thread Starter
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S/C engine compared to regular 3.8

Just wondering what some of the differences are between the 2 engines. I have 3 complete S/C engines here, and i have noticed the heads have SC cast in the corners. Also the blocks have SC cast behind the flywheels. Are there other things that are different? Thanks.
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post #2 of 8 (permalink) Old 05-28-2010, 04:38 AM
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SC block has more webbing and is much stronger. SC motors got forged crank and rods, and different pistons. SC heads have a thicker deck to try to help with the head gasket issues. There may be more differences, but those are the only ones that I know about for sure. Basically everything on the SC block had to be beefed up to hold up to the blower.

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-90 XR7 5-speed black on black w/sunroof, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, and ported big valve heads
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post #3 of 8 (permalink) Old 05-28-2010, 04:39 AM
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IIRC, the blocks were stronger than the N/A counterpart, and the internals (crank, rods, etc.) are forged compared to cast.

And of course, the S/C engine has a supercharger strapped to it

There may be a few more differences but that's what comes to mind right now.

Jay

These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.
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post #4 of 8 (permalink) Old 05-28-2010, 04:46 AM Thread Starter
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Ya thanks guys, thats good to know i,m just trying to decide if i should keep these 3 blocks or scrap them. Anyone else have any knowledge about these engines. Thanks.
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post #5 of 8 (permalink) Old 05-28-2010, 05:22 AM
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Are they running motors, or at least good bottom ends? If they are, you could probably sell them for more than scrap value.

-91 Cougar LS, coming soon, complete overhaul with a 427" Windsor.
-90 XR7 5-speed black on black w/sunroof, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, and ported big valve heads
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-90 SC Automatic rustbucket winter beater
-97 Tbird Sport 4.6 Nice weather daily driver
-"Your buddy Mike is INSANE!" -ClintD's dad
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post #6 of 8 (permalink) Old 05-28-2010, 05:39 AM
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Quote:
Originally Posted by jimmy95 View Post
Anyone else have any knowledge about these engines. Thanks.
Basically ... EVERY part of the 3.8 SC engine is different from the NA 3.8 engine. The 94/95 SC engines are even better than the 89-93 SC's.
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post #7 of 8 (permalink) Old 05-28-2010, 06:11 AM
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All the details here:

http://www.sccoa.com/articles/everwonder.php


cheers
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post #8 of 8 (permalink) Old 05-29-2010, 12:22 AM Thread Starter
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YES i have 3 complete engines here, 2 of them are fairly low mileage and run very nice, the other engine only has 15000 miles on it since it was rebuilt, but the previous owner says it overheated for some reason and blew the head gaskets. FastEd thank you, that is very helpful.
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