LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

what valve covers will clear 1.6rr's?

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Old Jun 18, 2003 | 03:05 PM
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simple's Avatar
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what valve covers will clear 1.6rr's?

without modifying them?
part #'s or links are helpful!

thanks
Steve
Old Jun 18, 2003 | 03:15 PM
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I think the lt4 composite covers will clear. They are a GM part.

Just so you know, modifying yours is cake. I had no idea what i was doing and it took me about 15 min with a dremel and pair of needle nose.
Old Jun 18, 2003 | 03:31 PM
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will the LT4's also clear the alternator?
and to clearance the stock ones all you have to do is trim up the center supports right?

thanks
Steve
Old Jun 18, 2003 | 03:38 PM
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If you have the Crane Gold-you don't have to do anything with the stock covers
Old Jun 18, 2003 | 03:40 PM
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comp pro mags!
Old Jun 18, 2003 | 03:43 PM
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The lt4s should be notched for the alternator too.

If you modify yours, there are 4 bolts. For each of the bolt tubes that go through the cover, there are metal supports going crossways. The part of these cross beams which is closest to the head bends out, so that it is wider there than at any other place. You just need to bend that so that the support becomes taller, yet the same width as the rest of the support. Kinda hard to explain, but once you are in there you will know what i mean.
Old Jun 18, 2003 | 03:46 PM
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thanks a bunch, Jared!

anyone know for sure if the LT4's are clearanced for the alternator
Old Jun 18, 2003 | 03:49 PM
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Originally posted by simple
comp pro mags!
i have comp pro mans and modifid stock valve covers
Old Jun 18, 2003 | 03:52 PM
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Originally posted by simple
anyone know for sure if the LT4's are clearanced for the alternator
of course they are clearanced, how else would they fit on the lt4
Old Jun 18, 2003 | 03:54 PM
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hehe i was thinking Vette LT4, it doesnt have the alt. in the same place as the f-bods

thanks
Old Jun 18, 2003 | 04:41 PM
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Yeah the stockers will work you just have to modify the lip inside of the valve cover.
Old Jun 18, 2003 | 04:47 PM
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I have 1.6 rr's that came with the Hot Cam Kit and they fit under the stock valve covers.
Old Jun 18, 2003 | 05:09 PM
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Originally posted by mojo
If you have the Crane Gold-you don't have to do anything with the stock covers
Ditto. That's what I have.
Old Jun 18, 2003 | 11:04 PM
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Originally posted by simple
thanks a bunch, Jared!

anyone know for sure if the LT4's are clearanced for the alternator
Your very welcome.
Old Jun 18, 2003 | 11:13 PM
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Yes, the LT4 valve covers clear the alternator. As others have stated the easiest thing to do is modify the stock valve covers. Just be careful not to overtighten them.

If you do have the money the LT4 composite valve covers a great improvement though! No gasket problems because of the integrated o-ring style seal, they are much more rigid which helps reduce chances of a leak (especially when compared to stock covers with the supports modified), they're stud mounted which makes installation a snap, and they help muffle valvetrain noise. A little pricey however.



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