Akwai nau'ikan injunan V8 daban-daban guda biyu dangane da crankshaft.

Jirgin saman tsaye tsarin V8 ne na yau da kullun a cikin motocin zirga-zirgar Amurka. Matsakaicin tsakanin kowane crank a cikin rukuni (rukuni na 4) da wanda ya gabata shine 90 °, don haka tsari ne a tsaye lokacin da aka duba shi daga ƙarshen crankshaft. Wannan saman tsaye zai iya cimma daidaito mai kyau, amma yana buƙatar ƙarfe mai nauyi. Saboda manyan jujjuyawar inertia, injin V8 mai wannan tsari na tsaye yana da ƙananan hanzari, kuma ba zai iya sauri ko raguwa cikin sauri idan aka kwatanta da sauran nau'ikan injin. Tsarin kunna wutar lantarki na injin V8 tare da wannan tsari yana daga farko zuwa ƙarshe, wanda ke buƙatar ƙirar ƙarin tsarin shaye-shaye don haɗa bututun mai a ƙarshen biyu. Wannan hadadden tsarin shaye-shaye kuma kusan daurewa a yanzu ya zama babban ciwon kai ga masu zanen motocin tseren kujeru guda.

Jirgin yana nufin cewa crank shine 180 °. Ma'auni ba daidai ba ne, sai dai idan an yi amfani da ma'auni na ma'auni, girgiza yana da girma sosai. Saboda babu buƙatar ƙarfe mai ƙima, crankshaft yana da ƙananan nauyi da ƙarancin rashin ƙarfi, kuma yana iya samun babban sauri da haɓakawa. Wannan tsarin ya zama ruwan dare a cikin motar tseren zamani mai nauyin lita 1.5 na Coventry Climax. Wannan injin ya samo asali daga jirgin sama a tsaye zuwa tsari mai lebur. Motoci masu tsarin V8 sune Ferrari (injin Dino), Lotus (injin Esprit V8), da TVR (Injin Gudun Takwas). Wannan tsarin ya zama ruwan dare a cikin injinan tsere, kuma sanannen shine Cosworth DFV. Tsarin tsari na tsaye yana da rikitarwa. Don haka, yawancin injunan V8 na farko, da suka haɗa da De Dion-Bouton, Peerless da Cadillac, an kera su tare da tsari mai faɗi. A cikin 1915, ra'ayin ƙira na tsaye ya bayyana a taron injiniyan motoci na Amurka, amma an ɗauki shekaru 8 don yin taron.