Tonse tinamaliza kukonda mtundu wina wa nyimbo, koma kwa petrolheads kungakhale chisankho chovuta pamene nyimbo yomweyo imapangidwa ndi injini za zomangamanga zosiyana.
Chinthu chimodzi ndi chotsimikizika: Malo Ochepa V8 Ma Chevy akhala akuimba kwa zaka 60 ndipo apitirizabe kuyimba, ndipo ZZ6 yaposachedwa ndiyokhala phokoso lomaliza, mokuwa mokulira mumzera wautali.
Koma tisanapite ku zoyambira, tiyenera kukusiyirani zina, kuti mumvetse ndendende kusiyana pakati pa V8 "Big Block" ndi V8 "Small Block" , kapena “Chitchinga Chachikulu” ndi “Njira Yaing’ono”.
Kodi Small Block inabadwa bwanji ndipo pali kusiyana kotani?
Asanawonekere kwa Small Block V8, mu 1955, zopereka za V8 za omanga ambiri aku America zidapangidwa ndi Big Blocks. Sitikufuna kukulitsa kwambiri, koma kusiyana kwakukulu ndi komwe kumadziwika kwambiri: midadada ikuluikulu imakhala yokulirapo kuposa midadada yaying'ono kutalika ndi m'lifupi, zomwe sizitanthauza kuti ali ndi kusamuka kochulukirapo, kwenikweni ndizotheka. kukhala ndi kusamuka komweko ndi midadada iwiri.
Mipiringidzo ikuluikulu imakhala ndi ndodo zotalikirapo zolumikizira, zomwe zimathandizira kugunda kwa pistoni, potero zimatulutsa torque yambiri, koma kukhala yocheperako kusinthasintha kwakukulu, komanso makulidwe achitsulo pakati pa makoma a silinda nawonso amakhala okulirapo. Kumbali inayi, mitu yapakati pa midadadayi imakhala ndi mapangidwe osiyanasiyana, m'makona a ma valves ndi njira zosiyanasiyana zoziziritsira ndi zokometsera. Monga midadada yokha, pankhani ya mayendedwe opaka mafuta, kuwonjezera pa kukula kwake, midadadayo imakhalanso ndi ngodya zosiyanasiyana mu V-kutsegula komanso m'makona ndi matayala azitsulo zolimba / hydraulic zomwe zimasuntha ma valve. ili pamutu.
Akatswiri a Chevy ankadziwa kuti Big Blocks anali ndi malo awo osungira magalimoto akuluakulu ndipo kotero panali kufunika kopanga chinachake chopepuka, chokhala ndi mphamvu zofanana, koma chokhoza kupanga mphamvu zambiri pa ma revs apamwamba kwambiri, motero kubadwa kwa Small Block.
Munali mu 1955 pomwe Chevy's Small Block yoyamba idabadwa, the 265 (ponena za kuchuluka kwake mu ma kiyubiki mainchesi), yaying'ono 4.3 l V8 yokhala ndi mphamvu kuchokera ku 162 hp mpaka 180 hp, yokhala ndi zomangamanga za pushrod ndi OHV (valvu ya pamwamba). Zinali zabwino kuti zisinthirenso zotsalira zofananirako koma m'midadada ya masilinda asanu ndi limodzi, omwe anali ndi mitsempha yaying'ono yamasewera ndipo amaganizira kwambiri zamafuta.
adatsata gawo 283 4.6 l, V8 iyi ikhala ndi udindo wopatsa mphamvu mtsempha wamasewera wa Chevy, ndipo woyamba kupanga makina ojambulira makina a Rochester - njira yosinthira iyi idapeza 1 hp pa kiyubiki inch.
The lodziwika bwino 327 chinali chisinthiko cha Small Block 265 yotchuka kale. Iyi 5.3 l V8 ipanga mbiri mu mtundu wake wa L-84, womwe ukanabwera kudzakonzekeretsa Corvette C2 Stingray. Apanso kusinthika kwa jakisoni wamakina opangidwa ndi Rochester, kungapangitse chipika cha L-84 kutengera 1,146 hp pa cubic inch, mbiri yomwe idasweka mu 2001 ndi m'badwo wachitatu wa LS6.
Timapitanso ku nthano Malo Ocheperako 302 , 5.0 l V8 iyi idzawonetsa mbadwo, popeza mizu ya mapangidwe ake imachokera mwachindunji ku zoletsedwa za mpikisano wa Trans Am, ndi SCCA (Sports Car Club of America), kumene midadada ikuluikulu kuposa 305 inchi ya cubic sinaloledwa. M'zaka zamtengo wapatali za mpikisano uwu, mpikisano pakati pa Camaro Z / 28 ndi Mustang Boss 302 unkatsutsidwa mosinthana-sinthana ndipo molunjika, 290 hp yomwe ambiri amati inali pafupi kwambiri ndi 350, inali yosangalatsa kwambiri. oyendetsa ndege mu 1969 Camaro Z/28.
Mavuto amafuta ndi kupita patsogolo kwaukadaulo monga yankho
M'zaka za m'ma 70, vuto la mafuta ndi nyengo ya Smog (kuwonongeka kwamlengalenga komwe kumachitika chifukwa cha mpweya wa galimoto, wodziwika ndi chifunga chopangidwa ndi mpweya woipitsa), akanapha Chevy's Small Block, koma sizinali choncho. Akatswiri a Chevrolet adapatsidwa ntchito ya Herculean yopeza chipika cha 5.7-lita 350, LT1, chotha kukwaniritsa miyezo ya chilengedwe pomwe ali ndi chidwi choyezera. Komabe 360 hp yake idawala. Komabe, ndi kufa kwa Minofu Magalimoto, minofu yoyera yaku America imatha kukhala ndi zaka khumi zamphamvu, zowoneka mu L-82. Small Block 350 iyi inali kale ndi 200 hp, kupanga Corvette galimoto yokhala ndi zopindulitsa zochepa.
Nthawi zasintha ndipo uinjiniya wasintha, ndipamene ma Chida Chaching'ono 350 L-98 . jakisoni wamagetsi angapangitse kuti abwezeretse zina zomwe Corvette ndi Camaro adataya panthawi ya Smog. Mphamvu sizinali zanzeru, koma pakati pa 15 ndi 50 hp zinali zitapezedwa, koma zinali zokwanira kuti Corvette adachita manyazi kupitirira 240 km / h mu 1985.
Kumbali ya Factory Small Blocks, gawo la GM Performance lakhala likupereka mayankho pama projekiti osiyanasiyana omwe GM Fan amafunikira. THE ZZ4 , pokhala m'badwo wachinayi pam'badwo wochita bwino kwambiri Small Block 350, ukanakhala wotsogola kwambiri mu 1996 pakusamutsidwa kopeka kwa 5.7 l kwa Chevrolet.
Mutu wotsatira: LS
Mzera wa Chevrolet wa LS-generation Small Blocks unayamba mu 1997. Mwinamwake mudamvapo za iwo, kaya ndi machitidwe awo, kukwanitsa, kapena kumasuka kumene ma swaps amapangidwira chifukwa cha kukula kwawo kwakukulu. Kuchokera ku 5.7 l LS1 / LS6 yophiphiritsira mpaka 7.0 l LS7, midadada ya LS yakhala ikuwonetseratu m'badwo womwe unkalakalaka mphamvu, kudalirika komanso kugwiritsa ntchito moyenera, pamtengo wotsika kuposa mpikisano.
Kwa okonda mphamvu zamasukulu akale, GM Performance ikuperekabe, munthano yamphamvu ya 7.4 l, chipika cha LSX-R 454. Mu 1970 nthano ya 454 LS6 inali V8 Big Block yomwe inakonzekeretsa Chevelle SS, ndi mphamvu ya 450. hp ku. Masiku ano ndizotheka kuchotsa mu njira ya N/A (yofunidwa mwachilengedwe) kuchokera ku LSX-R kuposa 600 hp.
ZZ6, zatsopano
Tidamaliza ulendowu kudzera pa Chevrolet's Small Blocks ndi injini yaposachedwa yochokera ku GM Performance, ZZ6 zatsopano . Zachidziwikire, miyambo ikupitilizabe ndi 5.7 l V8 Small Block, ndipo kukondwerera zaka 60 izi, ZZ6 iyi ikuwonjezera kukhala yamphamvu kwambiri ya 5.7 l - 405 hp ndi 549 Nm yotengedwa ku quad body carb yakale - 100% mphamvu ya analogi iyi imadalira mitu yopangidwa mwapadera ya LS V8. Cholinga chinali kuonjezera kuthamanga kwa mpweya, ndi camshaft yoopsa kwambiri koma kulemekeza camshaft ya mtundu wa pushrod, ma valve okonzedwanso, crankshaft yopangidwa ndi pistoni mu aluminiyumu yokhala ndi silicon yambiri.
Ngakhale m'badwo wa LS upereka m'malo kwa LT, ndi kudzera mu uinjiniya ngati uwu pomwe timalakalaka zaka 60 za Small Blocks V8 zomwe Chevrolet idatipambanitsa. "Old School" kapena yamakono, MOYO WAULERE KUPITA V8.
Chevy Small Block 302