Peb txhua tus tau nyiam qee cov suab paj nruag, tab sis rau lub taub hau roj av nws tuaj yeem yog qhov kev xaiv tsis yooj yim thaum tib lub suab paj nruag tsim los ntawm cov cav ntawm cov qauv sib txawv.
Ib yam yog tseeb: lub Me Me Block V8 Chevy's tau hu nkauj tau 60 xyoo thiab tseem yuav hu nkauj, nrog ZZ6 zaum kawg yog qhov kawg hoarse, bubbling qw nyob rau hauv ib txoj kab ntev.
Tab sis ua ntej peb mus rau lub hauv paus chiv keeb, peb yuav tsum tau tso koj tej kev txiav txim siab, kom koj thiaj li to taub raws nraim qhov Qhov sib txawv ntawm V8 "Big Block" thiab V8 "Small Block" , los yog "Big Block" thiab "Small Block".
Small Block yug li cas thiab qhov txawv yog dab tsi?
Ua ntej qhov tshwm sim ntawm thawj qhov me me V8, xyoo 1955, V8 qhov kev thov ntawm cov neeg tsim khoom Asmeskas feem ntau tau ua los ntawm Cov Loj Loj. Peb tsis xav nthuav nws ntau dhau, tab sis qhov sib txawv loj yog qhov tseem ceeb tshaj plaws: cov blocks loj yog lub cev loj dua li cov blocks me me hauv qhov siab thiab qhov dav, uas tsis tau txhais hais tias lawv muaj kev hloov pauv ntau dua, qhov tseeb nws yog qhov ua tau. kom muaj qhov sib txawv txav nrog ob lub blocks.
Cov blocks loj muaj cov kav hlau txuas ntev dua, nyiam cov hlab ntsha ntawm lub pistons, yog li ua kom muaj zog ntau dua, tab sis tsis muaj peev xwm ntawm kev sib hloov siab, thiab cov hlau tuab ntawm lub tog raj kheej phab ntsa kuj ntau dua. Ntawm qhov tod tes, lub taub hau ntawm cov blocks no muaj cov qauv sib txawv, ob qho tib si nyob rau hauv cov ces kaum ntawm lub li qub thiab nyob rau hauv qhov sib txawv cua txias thiab lubrication raws. Raws li nyob rau hauv cov blocks lawv tus kheej, nyob rau hauv cov ntaub ntawv ntawm lub lubrication raws, nyob rau hauv tas li ntawd mus rau qhov loj, cov blocks lawv tus kheej kuj muaj ntau lub kaum sab xis nyob rau hauv lub V-qhib thiab nyob rau hauv lub kaum sab xis thiab sib nrug ntawm cov khoom / hydraulic impellers uas txav lub valve stems. nyob ntawm lub taub hau.
Chevy engineers paub tias Big Blocks muaj lawv qhov chaw tshwj tseg rau cov tsheb loj thiab yog li yuav tsum tau tsim ib yam dab tsi sib dua, nrog rau tib lub zog, tab sis muaj peev xwm tsim tau ntau lub zog ntawm ntau dua revs, yog li yug me me Block.
Nws yog thaum xyoo 1955 uas Chevy thawj Me Me Block tau yug los, tus 265 (xa mus rau nws lub peev xwm nyob rau hauv cubic inches), me me 4.3 l V8 nrog lub zog ntawm 162 hp txog 180 hp, nrog pushrod architecture thiab OHV (overhead valve). Nws yog qhov zoo tshaj plaws los hloov qhov sib npaug sib npaug tab sis nyob rau hauv cov blocks ntawm rau lub tog raj kheej inline, uas muaj cov leeg ntaus pob ncaws pob me me thiab tau tsom mus rau kev lag luam roj ntau dua.
ua raws li kob 283 4.6 l, V8 no yuav yog lub luag haujlwm rau kev txhawb zog rau Chevy cov leeg kev ua kis las, thiab thawj zaug rau lub Hoobkas-tsim Rochester cov tshuab txhaj tshuaj - qhov kev hloov pauv no tau ua tiav 1 hp ib cubic nti.
Cov lus dab neeg 327 Nws yog ib qho kev hloov pauv ntawm qhov uas twb muaj npe me me Block 265. Qhov 5.3 l V8 no yuav ua rau keeb kwm hauv nws cov L-84 variant, uas yuav los nruab rau Corvette C2 Stingray. Ib zaug ntxiv qhov kev hloov pauv ntawm cov tshuab txhaj tshuaj los ntawm Rochester, yuav ua rau L-84 thaiv rau debit 1,146 hp ib cubic inch, cov ntaub ntawv tsuas yog tawg hauv 2001 nrog 3rd tiam ntawm LS6.
Peb dhau mus rau mythical Me Me Block 302 , no 5.0 l V8 yuav cim ib tiam, raws li cov hauv paus hniav ntawm nws tsim los ncaj qha los ntawm cov kev txwv ntawm lub Trans Am kev sib tw, los ntawm SCCA (Sports Car Club of America), qhov twg blocks loj tshaj 305 cubic inches tsis pub. Hauv lub hnub nyoog kub ntawm qhov kev sib tw no, kev sib tw ntawm Camaro Z / 28 thiab Mustang Boss 302 tau sib cav tig-los-tig thiab nyob rau hauv qhov ncaj, 290 hp uas ntau tus neeg thov tau ze rau 350, yog qhov zoo siab ntawm pilots, nyob rau hauv 1969 Camaro Z/28.
Cov roj teeb meem thiab thev naus laus zis nce qib raws li kev daws teeb meem
Nyob rau hauv lub 70s, cov roj teeb meem thiab lub Smog era (tam sim no muaj kuab paug nyob rau hauv lub tsheb emissions, characterized los ntawm ib tug pos huab tsim los ntawm pa phem gases), tuaj yeem tua Chevy's Small Block, tab sis qhov ntawd tsis yog li ntawd. Chevrolet engineers tau txais Herculean txoj haujlwm kom tau txais 5.7-liter 350 block, LT1, muaj peev xwm ua tau raws li ib puag ncig cov qauv thaum muaj kev ntsuas ntau dua. Tseem nws 360 hp ci ntsa iab. Txawm li cas los xij, nrog kev tuag ntawm Lub Tsheb Muscle, cov nqaij dawb huv Asmeskas yuav ntsib lub xyoo tsaus ntuj ntawm lub zog, tsim nyob rau hauv L-82. Qhov Me Me Block 350 no tsuas muaj 200 hp, ua rau Corvette lub tsheb nrog cov txiaj ntsig me me.
Lub sijhawm tau hloov pauv thiab engineering tau hloov zuj zus, qhov ntawd yog thaum 350 L-98 . kev txhaj tshuaj hluav taws xob yuav ua rau nws muaj peev xwm rov qab tau qee qhov kev ua tau zoo uas Corvette thiab Camaro tau poob thaum lub sijhawm Smog. Lub hwj chim tsis yog ci ntsa iab, tsuas yog nyob nruab nrab ntawm 15 thiab 50 hp tau txais, tab sis nws yog ntau tshaj li txaus rau Corvette kom tsis txhob poob siab tshaj 240 km / h hauv xyoo 1985.
Ib sab ntawm Factory Small Blocks, GM Performance division yeej ib txwm muab kev daws teeb meem rau ntau yam haujlwm uas GM Ntxuam xav tau. LUB ZZ4 , yog 4th ntawm ib tiam ntawm kev ua tau zoo Me Me Block 350, nws yuav yog lub xeev ntawm cov kos duab nyob rau hauv 1996 rau no mythical 5.7 l hloov chaw rau Chevrolet.
Tom ntej: LS
Chevrolet's lineage of LS-generation Small Blocks pib nyob rau hauv 1997. Tej zaum koj twb tau hnov txog lawv, txawm hais tias nws yog lawv cov kev ua tau zoo, kev them taus, los yog qhov yooj yim nrog cov swaps tau muab lawv qhov loj me me. Los ntawm cov cim 5.7 l LS1 / LS6 mus rau qhov loj 7.0 l LS7, LS blocks tau mus ib txhis cim ib tiam neeg uas xav tau lub zog, kev ntseeg siab thiab kev noj nruab nrab, ntawm tus nqi qis dua qhov kev sib tw.
Rau cov kiv cua ntawm cov qub tsev kawm ntawv lub zog, GM Performance tseem muaj, nyob rau hauv mythical lub tog raj kheej muaj peev xwm ntawm 7.4 l, lub LSX-R 454 thaiv. Nyob rau hauv 1970 lub mythical 454 LS6 yog ib tug V8 Loj Block uas muaj lub Chevelle SS, nrog lub hwj chim ntawm 450. hp ua. Niaj hnub no nws muaj peev xwm rho tawm hauv N / A (naturally aspirated) txoj kev los ntawm LSX-R ntau tshaj 600 hp.
ZZ6, qhov tseeb
Peb ua tiav kev ncig xyuas los ntawm Chevrolet's Small Blocks nrog lub cav tshiab los ntawm GM Performance, new ZZ6 . Tau kawg, kev lig kev cai yog txuas ntxiv nrog qhov 5.7 l V8 Me Block, thiab ua kev zoo siab rau 60 xyoo no, ZZ6 no ntxiv rau qhov muaj zog tshaj 5.7 l puas tau - 405 hp thiab 549 Nm muab rho tawm los ntawm lub qub-fashioned quad lub cev carb - qhov no 100% analog zog cia siab rau tshwj xeeb crafted LS V8 taub hau. Lub hom phiaj yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau ua pa
Txawm hais tias LS tiam yuav muab txoj hauv kev rau LT, nws yog los ntawm engineering zoo li qhov no uas peb xav ntxiv 60 xyoo ntawm Me Blocks V8 uas Chevrolet yeej peb. "Qub Tsev Kawm Ntawv" los yog kawm, LONG LIFE TO V8.
Chevy Small Block 302