Dodgeb4ya Posted February 5, 2015 Author Report Share Posted February 5, 2015 (edited) There is very very little info on these Moly Block engines other than specs in the shop manuals and the sales brochures.. I would venture to guess production of 5-7% of the total line of dodge trucks were the 3-4 ton series. A lot of info is shown in the factory salesmans data books and service bulletins. Edited February 5, 2015 by Dodgeb4ya 2 Quote Link to comment Share on other sites More sharing options...
John-T-53 Posted February 5, 2015 Report Share Posted February 5, 2015 Bigger is better!! Great photos, thanks for sharing! Quote Link to comment Share on other sites More sharing options...
Jim Shepard Posted February 6, 2015 Report Share Posted February 6, 2015 Wow! What a beast. Was it the biggest big-truck engine in it's day? Quote Link to comment Share on other sites More sharing options...
Dave72dt Posted February 6, 2015 Report Share Posted February 6, 2015 GMC produced a 503 inline 6 back in the 50's Quote Link to comment Share on other sites More sharing options...
Tim Keith Posted December 22, 2016 Report Share Posted December 22, 2016 This is an old thread but this '55 with 413 does not look too bad. Needs a windshield. https://austin.craigslist.org/cto/5899353633.html Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted December 22, 2016 Author Report Share Posted December 22, 2016 If it had a "Real "413" I'd buy it and junk the truck! Quote Link to comment Share on other sites More sharing options...
James_Douglas Posted July 7, 2018 Report Share Posted July 7, 2018 I would love to see a photo of both a hydraulic lifter and a photo of how they "feed" it in the block. I have a friend that purchased a spare 8 cylinder L-Head for his 1946 Chrysler. That block, with RAISED CAST lettering has the world "special" nobody has ever figured out what that special means. The one thing that I noted and it may be that all the eights have it, I don't know, is steel inverted flare tubing feeding all of the lifter bores. I do not know if that was just to add pressure oil to the mechanical lifters or if there is something like hydraulic lifters in there. The engine has never been taken apart. I am curious as to how they did the hydraulic lifters as I would like to modify my 265 block to use them. Any photos would be appreciated. James. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted July 8, 2018 Author Report Share Posted July 8, 2018 (edited) Here are pictures of the 413 hydraulic removable tappet guide assemblies. Later I will try to post pics of the uncommon 1950 Chrysler flathead eight hydraulic tappet setup. Oil pump pressure is fed into the removable 413 tappet guides to feed the hydraulic tappets. Those (2) steel tubes front/ rear are std design on oiling the Chrysler 8 tappets. I will post pics of this later... Edited July 8, 2018 by Dodgeb4ya 1 Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted July 8, 2018 Author Report Share Posted July 8, 2018 Shown Here... the Chrysler 323 "8" flathead lifter oiling tubes and STD adjustable NON Hydraulic tappets in block. I don't have a hydraulic "X" straight "8" I thought i had... might have scrapped it sadly. The oil tubes direct oil from the main galley oiling cross tube to the tappet oil galleys. The engine block for either std or hydraulic tappets is the same part#. The "Wilcox-Rich" hydraulic tappets used in the Chrysler flathead "8" are the same design/style as in the 413 DT six... also used in eight and V12 Cadillacs and Packard etc. To convert a Chrysler six to hydraulic lifters is going to require engineering to provide a pressure oiling system to each lifter....a oiling groove around each lifter in the block. Then just finding the lifters and getting valve to lifter dimensions correct if even possible with these NA hydraulic mushroom lifters. Quote Link to comment Share on other sites More sharing options...
Billydodge Posted July 11, 2018 Report Share Posted July 11, 2018 (edited) On 2/5/2015 at 9:07 PM, Jim Shepard said: Wow! What a beast. Was it the biggest big-truck engine in it's day? Biggest in Dodge. Other truck manufactures used up to a 1091 cu in Hall Scott 6 cyc. Edited May 3, 2019 by Billydodge More Information 1 Quote Link to comment Share on other sites More sharing options...
James_Douglas Posted July 14, 2018 Report Share Posted July 14, 2018 Thank you very much for posting the photos and sharing your knowledge on this subject. I need to go take a look at my friends spare flathead 8 with the casting (raised) word special on it. If memory serves me correct, that engine has steel tubes, like the one in your photo, going to EACH lifter bore hole thus providing pressure oil to each bore. I am assuming that they are mechanical lifters but he has never had it apart. I will take a photo of it in the next few days and if it looks like I suspect, I will post it. I am wondering if I could round pressure oil to each bore and use a roller hydraulic lifter? My concern would be too much oil pressure loss out of the lifters. James. Quote Link to comment Share on other sites More sharing options...
Francois Pelletier Posted April 7, 2019 Report Share Posted April 7, 2019 Those lifters look remarkably similar to Continental aircraft motor lifters !! 1 Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted April 7, 2019 Author Report Share Posted April 7, 2019 (edited) Yes they do look very similar. Packards, Lincolns and Cadillacs of the 30's / 40's also used this same Wilcox-Rich hydraulic lifter. Edited April 8, 2019 by Dodgeb4ya Quote Link to comment Share on other sites More sharing options...
Francois Pelletier Posted April 11, 2019 Report Share Posted April 11, 2019 What I forgot to say is that they are still used in the O-200 and maybe other models of Continental still sold today so still availlable ! At an otherworldly aircraft parts price for sure but availlabe. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted April 12, 2019 Author Report Share Posted April 12, 2019 8 hours ago, Francois Pelletier said: What I forgot to say is that they are still used in the O-200 and maybe other models of Continental still sold today so still availlable ! At an otherworldly aircraft parts price for sure but availlabe. Holy Cow!!!! $170.00 a lifter.... glad mine are A-OK! Quote Link to comment Share on other sites More sharing options...
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