riv2x4 Posted September 17, 2015 Share Posted September 17, 2015 Is there a difference between the rear ac bracket for a dual quad script rocker covers vs for a single quad. Basically are there 2 or 3 or 4 different rear ac brackets? Recent ebay listings have me confused and to further make it difficult, I can not find any part or stamping number on the bracket. Larry Link to comment Share on other sites More sharing options...
RivNut Posted September 17, 2015 Share Posted September 17, 2015 The rear compressor bracket that came with the super wildcat engine is different because the finned aluminum valve covers require more clearance. If you're running dual quads and stamped steel valve covers you won't need the Super Wildcat bracket. Ed Link to comment Share on other sites More sharing options...
riv2x4 Posted September 17, 2015 Author Share Posted September 17, 2015 Ed, Thanks but that's not the issue. Is there a difference between the brackets for the alum covers single 4 vs duals. Link to comment Share on other sites More sharing options...
RivNut Posted September 17, 2015 Share Posted September 17, 2015 Oh yeah, big difference. For clearance for the finned aluminum covers the part of the bracket that goes over the finned valve covers had a much taller opening in it. That may not be the only difference either. I don't have one to measure but the bolt hole on the 2x4 intake may be in a different location than the bolt hole on the 1x4 intake. So besides the taller opening, it could have a different configuration for lining up with the bolt holes. The rear bracket for the compressor on the '66 nailhead has clearance for the finned covers but I don't know it lines up with the bolt holes on the 2x4 manifold. It could be that it only lines up with the Q-jet 1x4 manifold. It's too bad that when guys come across the manifold and carbs that they don't come away with the entire Super Wildcat package: carbs, linkage, kick down bracket, distributor, a/c bracket, etc. Ed Link to comment Share on other sites More sharing options...
steelman Posted September 17, 2015 Share Posted September 17, 2015 Clark's still show these brackets in their catalog, but I understand they are no longer available. As Ed states, to use the tall aluminum valve covers on an A/C car, you need this bracket or have to try to modify a stock bracket to clear. Link to comment Share on other sites More sharing options...
riv2x4 Posted September 17, 2015 Author Share Posted September 17, 2015 Let me rephrase the post , I do not need a bracket. I have one on my 2x4 car and a what I believe to be a spare. I know there are differences between stock and for the alum covers. The question to be answered is how many different brackets did Buick make for 64, Obviously the standard one and one for dual quads with the alum covers. Did they also make a different one for stock intake with alum covers that is different than the one for the dual quads. I'm asking because when installing the one on the car, it was more of a challenge than it should have been. This led me to think that there may be 2 different alum rocker ac brackets. There are no identifing marks on the bracket that I have found so far. Hope this helps. Link to comment Share on other sites More sharing options...
1965rivgs Posted September 17, 2015 Share Posted September 17, 2015 Let me rephrase the post , I do not need a bracket. I have one on my 2x4 car and a what I believe to be a spare. I know there are differences between stock and for the alum covers. The question to be answered is how many different brackets did Buick make for 64, Obviously the standard one and one for dual quads with the alum covers. Did they also make a different one for stock intake with alum covers that is different than the one for the dual quads. I'm asking because when installing the one on the car, it was more of a challenge than it should have been. This led me to think that there may be 2 different alum rocker ac brackets. There are no identifing marks on the bracket that I have found so far. Hope this helps.Yes Larry, there is a bracket for a single carb manifold and another bracket for the dual carb manifold. The bolt hole is in a different location on each manifold. Tom Mooney Link to comment Share on other sites More sharing options...
riv2x4 Posted September 17, 2015 Author Share Posted September 17, 2015 Thanks Tom, which bolt hole, and how to identify it as a 1x4 vs a 2x4 bracket. I suspect the one on my car is a single 4 and not the 2x4 one needed. Link to comment Share on other sites More sharing options...
RivNut Posted September 18, 2015 Share Posted September 18, 2015 Buick did not produce an engine in '64 that had a single four barrel and came equipped with finned aluminum covers. So basically there are two brackets: one for the steel valve covers and single four barrel intake and one for the finned aluminum valve covers and the dual four barrel intake. It would be the intake bolt hole that is different. Both engines used the same heads, compressor, and front compressor bracket, so the only place they could be different is on the intake manifold. I also have heard that when Clark's offered their aftermarket bracket, it needed some persuasion to fit. Ed Link to comment Share on other sites More sharing options...
1965rivgs Posted September 18, 2015 Share Posted September 18, 2015 Buick did not produce an engine in '64 that had a single four barrel and came equipped with finned aluminum covers. So basically there are two brackets: one for the steel valve covers and single four barrel intake and one for the finned aluminum valve covers and the dual four barrel intake. It would be the intake bolt hole that is different. Both engines used the same heads, compressor, and front compressor bracket, so the only place they could be different is on the intake manifold. I also have heard that when Clark's offered their aftermarket bracket, it needed some persuasion to fit. EdEd, The `66 GS cars had a single carb and aluminum valve covers. Yes, intake manifold bolt is different, Tom Link to comment Share on other sites More sharing options...
RivNut Posted September 18, 2015 Share Posted September 18, 2015 (edited) Yep, got one of those. Back in post #3, I thought he was asking about 1964 only. Other than the difference that allows additional height for the aluminun covers, are they the same? Will the '66 bracket work with a '64 manifold? Ed Edited September 18, 2015 by RivNut (see edit history) Link to comment Share on other sites More sharing options...
Lapham3 Posted September 18, 2015 Share Posted September 18, 2015 The '66 version for the single carb works fine for both stamped and cast covers for the earlier years. I used to pull these and the also the 425 qjet intakes on boneyard trips as there were many requests. I noted that a number were soon flipped-Dan Mpls. Mn. Link to comment Share on other sites More sharing options...
Pat Curran Posted September 18, 2015 Share Posted September 18, 2015 While we are on the subject, I know there were modifications to the aluminum valve cover during the production run but does any one know how many variations were made? I have seen ones with an indentation on the front of the cover if you were looking at it from the front of the car. I had a factory dual quad 65 non Gran Sport that did not have this indentation. Just curious. Thanks! Link to comment Share on other sites More sharing options...
steelman Posted September 18, 2015 Share Posted September 18, 2015 Tom said the covers with the indention are '66 only. Indention to clear the air pump, I believe. I have a set of these I intend to put on my car soon. If someone needs these for a '66 and wants to trade for an earlier set, I might trade, but these are not for sale. Link to comment Share on other sites More sharing options...
Lapham3 Posted September 19, 2015 Share Posted September 19, 2015 I think there were about 4-5 variations of these Winters Industries castings. The Calif versions with early (maybe premature?) emissions, vertical and angled PCV and also a couple of repop efforts since. Tom Mooney has the skinny I'm sure.I've seen quite a few cars that fellas 'show' that have funny head bolt locations and wrong year Winters covers. Of course, I'm the sort that would stick a Star Wars cleaner on my '66 225 and a Wildcat grill Link to comment Share on other sites More sharing options...
riv2x4 Posted September 19, 2015 Author Share Posted September 19, 2015 (edited) Here are a couple of picts of my bracket that matches the one on my car. I've also included links to a couple of ebay auctions with AC brackets. One listing title says it's for a single carb and notice that the top lip is different than the one in my picture. There appears to be no lip on the standard bracket for steel covers. Can anyone verify? One additional thought, could the ebay auction for the single 1x4 with the alum covers be a 66 stock universal fit bracket? http://www.ebay.com/itm/231683542709?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT http://www.ebay.com/itm/231691300414?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT Edited September 19, 2015 by riv2x4 (see edit history) Link to comment Share on other sites More sharing options...
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