184 results for chevy big block 396 found in 0.000 seconds

comp cams dual energy cams part no chevy big block 396-454 1965-1996 continued ... kit phone for price part no description chevy small block 262-400 1955-1998 cam only ... well with stock converter choppy idle chevy big block 396-454 1965-1996 $111.95 $ ... idle ford/mercury 221-302ci small block 1963-1995 com-31-416-3 dual energy ...

wide torque range ford 351w 1969-1995 big block chevy 396-454 1965-1996 continued ... part no description cam only price chevy small block 262-400ci 1955-1998 com-12- ... 262°/268° 112 lc rpm range 1,300-5,500 biggest cam for inboard/outboard good mid-range ... 9.5 comp ratio headers good hp cam chevy big block 396-454ci 1965-1996 com-11- ... 262°/268° 112 lc rpm range 1,000-5,000 biggest cam for inboard/outboard good mid-range ...

conditions can cause problems sb chevy 1602 fel-coprene rubber 1/64 .156 ... -lam w/steel core 1/4 .250 36.99 bb chevy 1605 fel-coprene rubber 1/64 .156 ... 351c 351m and 400 1/4 thick 36.99 s/b chevy head gaskets fel-pro s performance head ... to handle the special needs of big power engines supercharged nitrous ... pressure between the cylinder head and block seals combustion oil and coolant ... and vertical motion between head and block distributes clamping loads ... sold 1 per package 2 required per v block part no bore thickness volume price ... 400 4.200 .039 9.0cc $33.99 1074 sb chevy except 400 pre-flattened copper wire ... lt4 4.125 .039 8.7cc $35.99 1043 sb chevy except 400 pre-flattened steel wire ... heads 4.080 .039 8.2cc $39.99 1094 sb chevy except 400 embossed shim w/precision ...

accessory fastener kits 534-9501 s/b chevy 350-400 ci 12 pt 94.99 534-9601 ... s/b chevy 350-400 ci hex 94.99 534-9701 s/b ... chevy 350-400 ci 12 pt 79.99 534- ... 9801 s/b chevy 350-400 ci hex 79.99 535- ... 9501 b/b chevy 396-454 ci 12 pt 111.99 535-9601 b/b ... chevy 396-454 ci hex 111.99 535-9701 b/b ... chevy 396-454 ci 12 pt 87.99 535-9801 b/b ... chevy 396-454 ci hex 87.99 544-9701 340- ... 185-6001 144-6001 145-6002 190-6001 chevy 283-327 11/32 57.99 ... chevy s/b 400 3/8 57.99 ... chevy 307-350 3/8 57.99 ... ls1 high perf cracked rod 75.99 chevy b/b 7/16 57.99 ... chevy 383 stoker w/350 rod extra head ...

Oil Pump Screen Fastener 839061 Small Block Chevy $10.99 General Motors Year Rering ... 389 60-66 230.76 675.45 126.40 3 Chev 396 4-3/32 Bore 67-70 131.07 517.30 104.92 ... 739.63 211.05 How to Rebuild Your Small Block Chevy HP1029 . . . . . . . . . . . .$18 ... .99 How to Rebuild Big Block Chevy Engines HP755 ...

Price Int. Exh. Int. Exh. Int. Exh. Chevy 283-400 K12-206-2 .260/.260 .212/.212 . ... 2 .280/.280 .230/.230 .480/.480 $309.99 Chevy 396, 427, 454 K11-205-3 .268/.268 .218 ... 230 .512/.512 $359.99 Xtreme 4x4 K-Kits Chevy 283-400 K12-231-2 .250/.258 .206/.214 . ... 218 .447/.462 $309.99 Xtreme 4x4 K-Kits Chevy 396-454 K11-231-3 .254/.262 .210/.218 . ... Adv. Dur Lift Price Int/Ex Int/Ex Small Block Chevy 81-92 114102 idle-3500 244/254 . ... 1500-4500 264/274 .423/.446 $152.99 Big Block Chevy 94-Earlier 134112 1200-4200 ... 1600-4600 270/278 .485/.502 $169.99 Chevy 2.8/3.1 V6 81-89 TBI 254112 1000-4000 ... 264/274 .423/.423 $169.99 Ford Small Block 88-95 Non H.O. 364112 1000-4000 252/260 ... all of this into more power! Small Block Chevy Hydraulic Dur @.050" Lift Part# ... 74.99 Small Block Chevy Hydraulic Roller 87 Newer With OE ...

hyd roller 5/16 262-400 most 5/16 396-454 retro fit 3/8 396-454 1965-86 3/8 v6 ... 262 78-86 hardened replacement 5/16 v8 396-454 intake hardened replacement 3/8 v8 396 ... 400 87-later 3/8 265-400 87-later 3/8 396-454 7/16 chrysler v8 273-360 shaft v8 383- ... 11.5 6.125 to 7.5 part 7901-1 7900 chevy small block 66891c 5/16 stock length ... 86.97 chevy big block 66407c 3/8 stock length ...

them to internal balanced dampers chevy if you change applications the basic ... ford or an added counterweight chevy this provides an unlimited amount of ... damper 90000 6-3/4 damper for 350 chevy v8 internal 134.97 90001 6-3/4 ... damper for 400 chevy v8 external 150.97 90002 8 damper ... for 350 chevy v8 internal 156.97 90003 8 ... damper for 400 chevy v8 external 162.97 90004 8 damper ... for 396/427 chevy internal 173.97 90005 8 damper ... for 454/502 chevy external 179.97 90006 6.4 damper ... for early small block ford 28.4 oz in ... 196.97 90010 6 damper for sb chevy lightweight int 150.97 90011 6.84 ... 17.97 91003 counterweight for small block chevy 400 5.63 91005 counterweight ... for bb chevy 454 6.76 91006 ...

-400 200 longer 265-400 250 longer 396-454 stock length ford 221-302 1962-69 302 ... 262-400 retro hyd roller 262-400 most 396-454 retro fit 396-454 1965-86 ford 255 302 ... 4816-8 4838-8 4842-8 4851-8 application chevy 265-400 chevy 265-400 chevy 265-400 ... chevy 396-454 ford 289-351w ford 429-460 oldsmobile ... and high strength bolts included small/big block chevrolet part 4605 spring ... lock 10° 1.500 1.550 742-16 283-400 chevy 7° 1.250 743-16 gm ford 7° 1.437 1.500 ... 744-16 bb chevy,chry,ford 7° 1.437 1.500 747-16 super lock 10° 1 ...

-400 265-400 87-later 265-400 87-later 396-454 chrysler v8 273-360 v8 383-440 ford ... and ls1 265-400 retro-fit early model 396-454 retro-fit early model gen vi and 8.1l o ... and ls1 265-400 retro-fit early model 396-454 retro-fit early model oldsmobile and ... solid lifters chevrolet 265-400/396-454 265-400/396-454 265-400 w 875 lifter ... bores 265-400/396-454 pro magnum 265-400/396-454 w 012 oil ... description chevrolet v8 small and big block .491 chevrolet v8 small and big block ... 265-400 265-400 265-400 265-400 396-454 396-454 396-454 ford 289-351w chrysler ... for maximum performance application chevy v8 265-400 1955-91 except with factory ... roller cam chevy v6 90° 200 229 262 1978-86 chevy v8 396 ...

" and greater) camshafts. Use with all 396-502 big-block heads with adjustable rockers ... when installed on production engines. CHEVY BIG-BLOCK V-8 ...

Solid aluminum button for all 1965-1995 big-blocks, limits lateral movement of roller ... bearings for the ZZ572 engine. 220 CHEVY BIG-BLOCK V-8 BIG-BLOCK CAMSHAFTS Part ... ZZ572/720 engine. roller E: 274 E: .714 BIG-BLOCK CAMSHAFT LIFTER KITS INCLUDES CAMSHAFT ... 110 Low-end truck torque cam for all big-block truck applications from normal driving ... 228 I: .540 114 For all 9.5-10.75 C.R. big-block V-8s including 65-66 CA, 65-68 Fed ... I: 218 I: .500 114 For 8.75-10.5 C.R. 396, 427, 454, 502 big-blocks; good mid- ... N 3883986 tappet E: 218 E: .480 350 hp 396 cam; for 8.75-10.0 C.R., 1500-3800 rpm ...

thrust bearing is included application chevy 262-400 v8 90° v6 chevy 396-454 v8 ... chevy small block 85-up w/factory roller cam chevy ls1 98 ... aluminum with gasket included on small blocks application chevy sb 55-up with bb cam ... snout or non-factory roller cam chevy sb 85-up with factory roller cam chevy ... 400 wo/thrust plate 9-3100 65-up v8 396 400 402 427 454 9-3110 big block gen vi ... for the value driven racer application chevy small block chevy small block vortec v8 ... 96-up chevy small block w/factory roller cam chevy big block ... chrysler small block chrysler big block 1 bolt ford small block early 62-84 ... ford small block late 84-95 ford big block ford 351c 351m 400 heavy duty timing ...

3722 2182 2172 2167 2157 application chevy chevy chevy chevy chrysler chrysler ... comments 50-state legal for 1957-86 s/b chevy 50-state legal for 1957-86 s/b chevy 50 ... -state legal for 1976-95 s/b chevy for computer-controlled vehicles using ... #3764 manifold not for 1965-66 b/b chevys requiring a grooved rear cam journal ... vehicles with knock sensors application chevy 262-400 v8 1957-95 chevy 396-454 v8 ... 1987-95 with oem hydraulic lifters 366 396 402 427 454 1965-95 gen vi 1995-up gen ... part no 4240 4241 4254 4255 4250 4251 chevy small block 1957-86 chevy big block ... 1965-90 chevy ls1 early model trucks 2-piece w/rear ... mounted cam sensor chevy ls2 ls7 late model trucks 2-piece w/ ... 421 428 455 1955-82 not applicable for chevy chrysler with oem hydraulic roller- ...

for popular engine swaps available for chevy chrysler ford small block and big ... block engines hooker swap headers and mounts ... american motors jeep cj5 cj6 cj7 chevy v8 55-71 265-400 72-86 265-400 9810hkr ... 3 3 10 10 sap sap mufflers buick regal chevy v8 78-87 396-502 75-79 265-400 75-79 ... 396-502 2241hkr 2129hkr 2240hkr 2241-1hkr 2129- ... 10 sap sap rd catback systems skyhawk chevy v8 nnnnnn exhaust tips chevrolet gmc ... blazer jimmy 4 wd 69-91 396-502 2817hkr 2817-1hkr 90,117,121,167 ... -15 s-15 jimmy 4 wd 82-93 265-400 73-91 396-502 1 2 3 4 2839hkr 2454hkr 2839-1hkr 2454- ... ,121,167 yyyyyyy 17 8x31 3 10 sap 67-87 396-502 footnotes camaro 73-81 73-81 73-81 73- ... 81 82-92 396-502 396-502 396-502 396-502 396-502 2118hkr 2250hkr 2217hkr 2287hkr ...

cars with brodix spread port heads new chevy s.b 2348hkr eagle gambler j&j maximum ... and feature large 21 4 primaries for big blocks hooker puller headers use heli- ... tractors trucks chevrolet engines 396-502 2542hkr black 4 into 1 collector type ...

are included for one complete engine block. 66550 ..........Chevy SB 283-350 66551 ... ..........Chevy SB 400 66552 ..........Chevy BB 396-454 66553 ..........Ford 289-302 ... Mustang w/ T-5 Harmonic Balancers Fits Chevy small and big block engines. These are ... covers on page 4-5. 66508 ..........B/B 396 66509 ..........S/B 350 Cntr Timing ... Mechanical Fuel Pump A strong running Chevy needs plenty of gas! This high-capacity ... requirements of a fuel-hungry 500 hp Chevy small-block V8. The pumps lower housing ... regulator required. 66654 ..........Chevy Small-Block Fuel Pump MARKETING ...

purchasing. 66126 ..........10-Hole: Chevy 1971-81 66165 ..........10-Hole: Chevy ... 1965-72 66168 ..........12-Hole: Chevy Intermediate 1965-72, Camaro Chevy ... not fit 302 Hi-Perf. 66162 ..........Chevy S/B, 1965-79 Technical Note: Fits ... side dispsticks. 66132 ..........Chevy S/B, 1980-84 Technical Note: Fits 396- ... 454 Chevy Big Block Engines Chassis, except 62-67 Chevy II ... , Vega and Monza. 66611 ..........Chevy B/B 66187 ..........Ford S/B: 221, 260 ... later production chassis with 361 440 Big Block and 426 Street Hemi Engines. 5 ... Oil Pans 7-Quart Chevrolet Small Block 66164 ..........Orange 66167 ... 20 Oil Pump Shaft Fits Chervolet Small Block 66919C.........Oil Pump Shaft Neoprene ... Rubber Steel Valve Cover Gasket For Chevy small block, this steel reinforced ...

83.25 67272C Chevy SB 6 1/4 ... 83.25 67273C Chevy SB 6 3/8 ... 83.25 67274C Chevy SB 6 3/4 ... 83.25 67275C Chevy SB 7 ... 83.25 67276C Chevy SB 7 1/4 ... 83.25 67277C Chevy SB 8 ... 83.25 67278C Chevy BB 6 1/4 ... 83.25 67279C Chevy BB 7 ... 83.25 67280C Chevy BB 7 1/4 ... 83.25 67281C Chevy BB 8 ... are included for one complete engine block. 66550 Chevy SB 283-350 ... 10.45 66551 Chevy SB 400 ... 15.18 66552 Chevy BB 396-454 ......................... .......$15.18 ... 124.17 Harmonic Balancers Fits Chevy small and big block engines. These are ... balancer covers on page 4-5. 66508 B/B 396 ... and bronze thrust bearing. 66917C Small Block ... 103.73 66918C Big Block.................... ......................$12 1.04 www. ...

before purchasing. A. 66126 10-Hole: Chevy 1971-81.................. ....$21.75 B ... . 66165 10-Hole: Chevy Intermdt 1965-72 ..........$20.64 C. ... 66168 12-Hole: Chevy Intermediate 1965-72, Camaro Chevy ... Return Spring Brackets 66180 Most Chevy Chrysler ........................$ 4.31 ... . Will not fit 302 Hi-Perf. 66162 Chevy S/B, 1965-79 ... with passenger side dispsticks. 66132 Chevy S/B, 1980-84 ... 61.51 Technical Note: Fits 396-454 Chevy Big Block Engines Chassis, except 62- ... 67 Chevy II, some Chevelles, Vega and Monza. ... 66611 Chevy B/B ... later production chassis with 361 440 Big Block and 426 Street Hemi Engines. 5 ... Oil Pans 7-Quart Chevrolet Small Block 66164 Orange ... .43 Oil Pump Shaft Fits Chervolet Small Block 66919C Oil Pump Shaft ...

31h lg race port 86-91 350 v8 w/tpi all 396-454 1/16 thick cork seals 1.85w x 2.16h ... oval port all 396-454 1/16 thick cork seals 1.85w x 2.16h ... rect port all 396-454 same as #5828 use w/manifolds w/o upper ... oval port heads 1.50w x 1.82h all 396-502 stock square port 1.85w x 1.90h all 396 ... -502 round port 1.92 diameter all 396-502 round port 2.15 diameter all 396-502 ... round port 2.43 diameter all 396-502 extra large square port 2.09 x 2.09 ... chevrolet v8 283-400 1958-86 v8 396-454 1965-90 ford 289-351w 1965-95 part no ... 55-86 265-400 5/16 extra thick 65-88 396-502 3/16 thick w/locating tabs 65-88 396- ... 350 400 1980-1985 267 305 350 1965-1988 396 427 454 502 1986-1996 chevy small block ... 1 piece gasket 1975-1985 chevy small block 1 piece gasket 1991-1998 chevy big ...

of vital bearing surfaces part no 3795g chevy v8 6 cyl pontiac v8 engine cleaning ... of crankshaft oil holes cylinder-block oil galleys and cylinder-head drain ... cartridge oil filter to chevrolet small block and big block v8 1968-86 engine blocks ... -350 6 3/4 dia 283-400 7 dia `65-69 396-427 `70 400 sb 8 dia `70-73 396-427-454 ` ... high pressure connectors description chevy 68-95 v8 ford 57-95 v8 chrysler 60-95 ...

h-beam racing rods are perfect for chevy small blocks producing 700 hp and chevy ... big blocks producing 800 hp perfect for drag race ... 350 lj 2.100 rod journal par-hr5700 sb chevy 350 length 5.700 standard length ... bushed pin dia .927 par-hr5700p sb chevy 350 length 5.700 standard length ... pressed pin dia .927 par-hr6000 sb chevy 350 length 6.000 .300 length bushed ... length 5.400 bushed pin dia .927 chevy pin ford 351w 2.310 rod journal par- ... .00 $348.00 $348.00 $348.00 chevrolet 396-502 h-beam connecting rods 2.200 rod ... journal par-hr6135 bb chevy 396 402 427 454 502 $369.60 length 6.135 ... bushed pin dia .990 par-hr6385 bb chevy 396 402 427 454 502 $369.60 length 6. ... bushed pin dia .990 par-hr6535 bb chevy 396 402 427 454 502 $369.60 length 6. ...

super conductor spark plug wires cont chevy small block continued 85 95 sb v8 ... super conductor spark plug wires cont chevy big block continued 74 76 bb chevy ... super conductor spark plug wires cont chevy corvette continued 97-up ls1 corvette ... ­ red $8195 77 87 bb chevy straight spark plug boot hei style cap ... msd-31809 ­ red $8795 chevy gen iii 99-present ls1 truck 78 89 bb ... chevy straight spark plug boot late hei cap, ... $9095 90 95 truck bb-chevy efi 90° spark plug boot late hei cap ... -32109 ­ red only $11095 96 00 chevy truck straight spark plug boot 01 05 ... bb-chevy 8.1l c/k truck msd-32233 ­ black ... .7l v8 90° spark plug boot late hei cap chevy big block msd-31373 ­ black ... msd-31379 ­ red $8895 chevy corvette corvette 350 75 82 90° spark ...

eliminated designed to fit small block chevys up to 1979 with drivers side tube ... engine dipsticks -machined lokar chevy chevy cont engine dipsticks rpc chevy cont ... to polished alum/braided 1980-up sb chevy read level markings flexible engine ... oil pans only polished alum/braided bb chevy flexible bis40150 ... billet specialties ford flexible chevy 502 big block designed for clearance w ... block hugger headers chrome 1955-79 sb chevy 283-350 engine ed-5006 $57.00 ea ... 5.00 ea engine dipsticks rpc chevy chrome 1965-90 bb chevy 396-454 engine ... 6.25 ea flexible fits chevy small polished alum/braided pre-1979 sb ... chevy block 1979 earlier flexible engine dipstick ... aluminum billet aluminum 1955-79 sb chevy dipstick engine dipsticks-machined ...

barry grant sixshooter intake system chevy sb barry grant sixshooter intake ... system chevy bb chevy small block w conventional heads bag7500 $2,396. ... 00 set chevy small block w vortec heads bag7505 $2,396.00 set ... chevy big block w oval port heads bag7510 ... $2,396.00 set chevy big block w rectangular port heads bag7515 $2,396 ... pontiac fits 326ci 455ci bag7520 $2,396.00 set barry grant sixshooter intake ...

oil pan oem style 65 79-small block 283-350 drivers side dipstick 9781 oil ... pan oem style 65 79-small block 283-350 drivers side dipstick unplated ... 9425 oil pan 80 85-small block 305 350 pass side dipstick 9782 oil ... pan 86-96 small block 305 350 1 pc rear main seal 9426 oil ... 65-90 gen iv two piece rear main seal big block 396-454 1965-90 9779 ford oil ... oil pans will not fit trucks 1966-67 chevy ii or 302 high performance engines or ...

express products · designed for most chevy small block and big block applications ... oil pick ups available in chrome chevy orange · oil pan measures 8-1/4 in ... racing applications fitting both small block 1955-79 with driver s side dipstick and ... big block 1965-90 chevrolet engines/chassis ... combinations except 1962-67 chevy ll chevelles with steering linkage ... engine applications chevrolet small block 265-350 orange paint 7 qts 7601g ... high volume oil pump 7602g chevrolet big block 396-454 orange paint 6 qts 7606g ...

are heavily braced for added strength chevy small block performance/off-road steel ... -1/2 deep front 10 3/4 deep rear sump chevy big block ­ off-road deep sump steel ... pan capacity is 7 quarts plus filter chevy bb 396-454 mark iv 65 90 mil-31100 7 ...

high-load heat-creating jet drive boats chevy big block flywheel aft ­offshore jet ... drive oil pan 9 qt 7 deep in rear sump chevy bb 396-454 mark iv 65 90 mil-31557 ... 3point mounting mount crosses under block or 4-point mount 10 qt pan extra ... to enter the oil pan and contaminate chevy bb 8.2 litre/mark v mil-31556 ... chevy bb 396-454 v-drive pan flywheel fwd ...

nearest competition part no description chevy small block 265-400 29d03berl header ... replacement insert set uncut centers chevy big block 396-502 29d04berl header ... seals for chevy with 1.50 x 1.50 ports pair ... 29d03b3erl 29db3berl ford small block 289-302-351w 29d03aerl header seals for ... 29d03a2erl 29d03b5erl 29dd3berl ford big block 429-460 29d04aerl header seals ...

no pio-da3270 pio-da3071 application chevy 1968-1973 307 6-1/4 dia gmc-3896903 ... chevy 262z 305 vin h 6-3/4 dia camaro 1987- ... 8 corvette 1984-1991 vin 8 gmc-12551537 chevy 350 1969-1992 350 8 dia car/truck gmc- ... 6272222 chevy 350 1993-1997 7.5 dia serpentine belt ... pass car lt1 ­ no hub chevy 350 1996-2000 8 dia truck tahoe yukon ... gmc-10243271 chevy 350 1998-2000 gen iii eng lt4 camaro ... firebird dual serpentine belt ­ no hub chevy 400 sb 8 dia gmc-6272225 chevy big ... block 396 427 8 dia gmc-3860008 chevy big block 454 8 dia 1970-1991 gmc-10141212 ... chevy big block 454 8 dia 1991-1995 truck extra cut ... horsepower and torque paw-fb350 ¿ ­ sb chevy 283-350 6.250 o.d internal balance 95 ... 109 129 paw-fb400 ¿ ­ sb chevy 400 8.00 o.d external balance 95 your ...

new designs optimized for today s bigger engines industry leading computational ... 4.50 application 1975-86 262-400 sb chevy v8 1987-later w alum heads 262-400 sb ... 27 application 8150 1975-86 262-400 sb chevy v8 1987-later w alum heads 262-400 sb ... application 8501 1975-86 262-400 sb chevy v8 1987-later w alum heads 262-400 sb ... everbright 8501c 8502c 7620 team g big block chevy race manifolds features open ... -8000 3500-8000 7624 will fit tall deck blocks by using spacer kit #8204 everbrighttm ... aluminum application ford 429 460 big block v8 high rise/dual plane idle to 6800rpm ... chevy big block 396 402 427 454 oval port v8 dual plane ... v8 high rise/dual plane idle to 6800rpm chevy small block 1957-86 262 283 305 327 350 ... 142ci supercharger kits for small block chevy engines equipped w vortec l31 ...

when hooker honed its teeth on factory big block muscle cars making premium ... 265-400 265-400 265-400 265-400 350 ls1 396-502 396-502 265-400 265-400 265-400 396-502 ... 396-502 350 ls-1 265-400 265-400 ford 1967-70 ... their respective applications only if big block engine frame stands are used from ... bolts lower than the center bolts 184 big block frame stands and motor mounts ... 10893hkr 10893hkr super competition block hugger headers super competition block ... 262-400 262-400 262-400 262-400 262-400 396-502 396-502 396-502 396-502 ls-1 ls-1 ls-1 ... 255-302w 255-302w make models 262-400 396-502 camaro 350 ls1 mustang 4.6l 4 valve ... sealing surface super competition chevy chevy camaro ford ford competition ... chevy sb chevy sb chevy chevy ford 188 some parts are not legal for ...

when hooker honed its teeth on factory big block muscle cars making premium ... 67-73 70-77 70-79 64-75 265-400 283-400 396-454 265-400 283-400 396-454 265-400 283-400 ... 396-454 265-400 396-454 283-400 265-400 265-400 396-454 265-400 ... sap sap sap sap sap sap sap sap sap sap chevy chevelle el camino chevy monte carlo ... chevy chevy ii nova chevy camaro chevy blazer suburban jimmy yukon 1-ton crew ...

manifolds street competition chevrolet 396-502 v8 super victor bbc efi up to 8500 rpm ... the super victor bbc manifold #2927 for chevy big-blocks with rectangular port ... it is ideal for 500 cubic-inches or any big-block engine with high air flow requirements ... #29165 can be used on tall-deck 10.2 blocks without manifold spacers and accepts ... up to 7500 rpm fuel rail kit #3633 for big-block chevy efi manifolds the victor jr 454 ... efi series r and o for big-blocks are optimized for high performance ...