Bruce Nunnally Posted November 23, 2009 Report Share Posted November 23, 2009 The V8 engine was actually invented about 1903 and produced in limited numbers by the French firm DeBion-Bouton. Introduced ... View the full article Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
Cadillac Jim Posted November 23, 2009 Report Share Posted November 23, 2009 I believe that all these early V8's used single-plane crankshafts. Although a 90 degree V8 could have even firing like a straight 8 with a single-plane crankshaft, they have the same secondary vibration of a four cylinder engine. That's not an issue at lower RPMs. In the 1924 model year, Cadillac again provided a stunning innovation by producing their V8 with a two-plane crankshaft. Avoided earlier because a primary imbalance in a two-plane V8 crankshaft requires counterweights, the two-plane crankshaft V8 has no secondary vibrations because those in the two banks cancel out each other. The smoothness of this engine at any RPM revolutionized the industry, and since then all automobile V8s use dual-plane crankshafts. The 314 cid Cadillac V8 continued in production though the 1927 model year. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted November 23, 2009 Author Report Share Posted November 23, 2009 Yes, exactly right. Redesign in 1923 for the 24 model to the dual plane crankshaft. Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
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