ricksrj58 273 #1 Posted May 18, 2017 i received a WH 312-8 along with onan engine.can someone help id what vintage and horsepower this engine is?the numbers on the tag are CCKB-MS /1271G 96C920298 thanks for any info. Share this post Link to post Share on other sites
boomers_influence 106 #2 Posted May 18, 2017 rick according to my manuals this engine was made for wayne mfg. ??? it says it has a 1 1/8" dia straight crank out put shaft. it is rated at 19.9 / 20 HP @ 3900 rpm. they are HEAVY, and TALL and WIDE. thank you. boomer ( the used onan engine parts guy also NOS and new ) Share this post Link to post Share on other sites
ricksrj58 273 #3 Posted May 19, 2017 yeah that monster about knocked my back out,it is huge compared to the the 16 horse onan its sitting beside. thanks for the info Boomer. Share this post Link to post Share on other sites
onanparts.com 174 #4 Posted May 20, 2017 Confirmed that model was originally ordered by Wayne in June 1964. Your reissued model left the factory around September 1966. Share this post Link to post Share on other sites