richard Posted November 24, 2013 Share Posted November 24, 2013 Hi. I am in the process of trying to remove the intake and exhaust manifolds on a 77 280 and am stuck at trying to get the heat shield off. one book says one screw holds it but I am d%^%if I can find it I have the 4 bolts out (two short and two long and that is where I`m stopped. ??? any help will be appreciated Richard Quote Link to comment Share on other sites More sharing options...
Josh280z Posted November 24, 2013 Share Posted November 24, 2013 They'd be on the underside of the intake, don't surprised if they snap off. You might be able to prevent if you using a product like CRC freeze off. Quote Link to comment Share on other sites More sharing options...
T-Bone028 Posted November 24, 2013 Share Posted November 24, 2013 Another tip, if you havent already, keep hitting all the intake/exhaust manifold bolts you see with PB blaster. I made sure I applied PB blaster (or a similar penetrating oil) in the morning and the evening for about 3 days. Last thing you want is to deal with a snapped bolt in the head. Quote Link to comment Share on other sites More sharing options...
Metro Posted November 24, 2013 Share Posted November 24, 2013 There's two bolts on the underside in line with the #3 and #5 runner. They will be most likely be seized and if it they do break loose, be prepared to lose several square inches of skin on the lip of the heat shield. You don't really need to take the shield off to remove the manifold. You can reach the bolts on the underside with a 12" extension. There should be a gap between the heat shield and the manifold where you can see the washers. Just fish around there until it's grabbed onto something solid. And good luck getting those off as others have mentioned. Penetrating oil is your friend. Quote Link to comment Share on other sites More sharing options...
Josh280z Posted November 24, 2013 Share Posted November 24, 2013 CRC freeze off is a penetrating oil, in my experience, it works better than PB blaster. Quote Link to comment Share on other sites More sharing options...
richard Posted November 25, 2013 Author Share Posted November 25, 2013 Oh crap I have 4 books on rebuilding a Z open in my shop and not one of them starts with the words, First Buy A Lift ,they are to low to crawl under comfortably. Thanks Guys Richard Quote Link to comment Share on other sites More sharing options...
Josh280z Posted November 25, 2013 Share Posted November 25, 2013 It's easier to take the manifolds than removing the whole engine. Quote Link to comment Share on other sites More sharing options...
richard Posted November 25, 2013 Author Share Posted November 25, 2013 I was wondering about that. I can understand why people put in sb chevys Quote Link to comment Share on other sites More sharing options...
NewZed Posted November 25, 2013 Share Posted November 25, 2013 You don't really need to take the shield off to remove the manifold. Trying out some new picture-editing tools. From the usual place. Quote Link to comment Share on other sites More sharing options...
Chris83zxt Posted November 25, 2013 Share Posted November 25, 2013 I just went through this a couple of weeks ago on my '83. Not sure if the heat shield setup is the same but on mine as a poster above said removing the heat shield wasn't necessary for manifold removal. A whole lot of blind poking around with an extension was what eventually did the trick for me. Quote Link to comment Share on other sites More sharing options...
NewZed Posted November 25, 2013 Share Posted November 25, 2013 There's room for a mirror. Use your left hand to compensate for seeing in reverse. Quote Link to comment Share on other sites More sharing options...
str8pipez Posted November 25, 2013 Share Posted November 25, 2013 In regard to penetrating oils, it's hard to beat GIBBS. Works like magic. Quote Link to comment Share on other sites More sharing options...
Chris83zxt Posted December 14, 2013 Share Posted December 14, 2013 (edited) Just wanted to throw something in here that made life a whole lot easier for me during re-assembly (and I felt like a dunce for not thinking about it during disassembly). If disassembling, take your replacement gasket and line it up where you know the top bolts are on the intake and set it in place on top of the manifold leaning against the tapet cover. When reassembling, use the old gasket (if still mostly intact) in the same fashion. So much easier than trying to remember a tiny picture out of a book. Edited December 15, 2013 by Chris83zxt Quote Link to comment Share on other sites More sharing options...
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