Chevy 305

How many horses do I max out of a Chevy 305, and what mods would I need to do to get the power?

How many horses can I get out of a Chevy 305. And if you know what mods would I need to do to get the most out of 305s. Thank you for your time and help. Thank you, Justin

Mix in the trash. You can spend a lot of time, much money, and get some decent power out of it. And then you can also sell, buy a 350, put 1/3rd the amount of time and money, and have a more powerful engine. The 305 is not bad. But if you want to max anything, it is not the engine to go with.

88 89 90 91 92 93 94 95 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L
88 89 90 91 92 93 94 95 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L
$75.00
Time Remaining: 5h 30m
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Chevrolet GM SBC V8 400 350 327 307 305 283 CYLINDER HEAD BOLTS Both Heads
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$42.75
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AFR BIG BLOCK CHEVY 305cc AS CAST MAGNUM HEADS 2100
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AFR BIG BLOCK CHEVY 305cc AS CAST MAGNUM HEADS 2100 1
AFR BIG BLOCK CHEVY 305cc AS CAST MAGNUM HEADS 2100 1
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Time Remaining: 9h 25m
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GM CHEVY 305 REBUILDABLE CYLINDER HEAD 14102187 NN 5 F21721
GM CHEVY 305 REBUILDABLE CYLINDER HEAD 14102187 NN 5 F21721
$104.50
Time Remaining: 10h 56m
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84 CAMARO FIREBIRD PUSH RODS 305 ENGINE 74000 MILES
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$29.00
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CHEVROLET SBC 305 50L CYLINDER HEAD 14022601
CHEVROLET SBC 305 50L CYLINDER HEAD 14022601
$59.50
Time Remaining: 1d 7h 3m
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Sbc Small Block Chevy Head Bolt Kit Bolts New Gm 305 327 400 283 Cylinder
Sbc Small Block Chevy Head Bolt Kit Bolts New Gm 305 327 400 283 Cylinder
$28.95
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GM CHEVY MARINE OMC 50 OHV 305 V8 CASTING  081 ONLY CYLINDER HEAD 76 95
GM CHEVY MARINE OMC 50 OHV 305 V8 CASTING 081 ONLY CYLINDER HEAD 76 95
$235.00
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GM CHEVY MARINE OMC 50 OHV 305 V8 CYLINDER HEAD CASTING 081 ONLY 76 95 NO CORE
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ARP Chevy 305 350 Vortec Engine  Accessory Kit Black Oxide 12 Point 534 9704
ARP Chevy 305 350 Vortec Engine Accessory Kit Black Oxide 12 Point 534 9704
$127.00
Time Remaining: 1d 9h 51m
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87 88 89 90 91 92 CHEVY CAMARO CYLINDER HEAD 8 305 50L 315611
87 88 89 90 91 92 CHEVY CAMARO CYLINDER HEAD 8 305 50L 315611
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REBUILT 305 CHEVY VORTEC HR CYLINDER HEAD 12558059 CASTING
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$180.00
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CHEVY GM 305 50 CAMARO CAPRICE IMPALA GASKET SET 260 1147
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ARP Chevy Small Block 305 307 327 350cid Lrg Jrnl 3 8 ROD BOLT KIT 134 6003
ARP Chevy Small Block 305 307 327 350cid Lrg Jrnl 3 8 ROD BOLT KIT 134 6003
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CHEVY PERFORMANCE 283 305 307 327 350 383 400 VALVE SPRINGS 16
CHEVY PERFORMANCE 283 305 307 327 350 383 400 VALVE SPRINGS 16
$26.99
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New SuperSeal SBC Chevy 305 Head Gasket 3736 Bore
New SuperSeal SBC Chevy 305 Head Gasket 3736 Bore
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World Products 042650 Small Block Chevy 305ci S R Cast Iron Cylinder Head
World Products 042650 Small Block Chevy 305ci S R Cast Iron Cylinder Head
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78 86 Chevy SBC 50L 305 V8 416 450 Cylinder Head
78 86 Chevy SBC 50L 305 V8 416 450 Cylinder Head
$145.31
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87 92 Chevy SBC 50L 305 Slotted Push Rod Holes 081 187 Cylinder Head
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$170.17
Time Remaining: 3d 6h
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Comp Cams Sbc Chevy 1250 Valve Spring Kit 500 Lift 350 383 305 Springs
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$139.82
Time Remaining: 3d 6h 57m
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Bronze Valve Guides sb Chevy Buick Ford Pontiac V8 sbc 283 305 327 350 400
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$48.49
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NEW GM Chevy 305 50 Cylinder Head 194 Intake BARE CAST 96 2000 CH305A
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$325.00
Time Remaining: 3d 11h 15m
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ARP SB Chevy Small Block 305 350 Vortec Engine  Accessory Kit ARP 534 9504
ARP SB Chevy Small Block 305 350 Vortec Engine Accessory Kit ARP 534 9504
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ARP Chevy 305 350cid w headers 1987 95 Engine Accessory Kit Oxide Hex 534 9802
ARP Chevy 305 350cid w headers 1987 95 Engine Accessory Kit Oxide Hex 534 9802
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76 77 78 79 CHEVY CAMARO CYLINDER HEAD 8 305 120721
76 77 78 79 CHEVY CAMARO CYLINDER HEAD 8 305 120721
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Time Remaining: 4d 6h 7m
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77 78 79 80 81 CHEVY 10 PICKUP CYLINDER HEAD 8 305 50L 112333
77 78 79 80 81 CHEVY 10 PICKUP CYLINDER HEAD 8 305 50L 112333
$75.00
Time Remaining: 4d 6h 41m
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77 78 79 80 81 CHEVY 10 PICKUP CYLINDER HEAD 8 305 50L 112334
77 78 79 80 81 CHEVY 10 PICKUP CYLINDER HEAD 8 305 50L 112334
$75.00
Time Remaining: 4d 6h 42m
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64 69GMC CHEV SUBURBAN 305 CI CYLINDER HEAD SEE DESCRIPTION BELOW
64 69GMC CHEV SUBURBAN 305 CI CYLINDER HEAD SEE DESCRIPTION BELOW
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Valve Guides sb Chevy Ford Buick Pontiac 283 305 327 350 400 sbc Small Block
Valve Guides sb Chevy Ford Buick Pontiac 283 305 327 350 400 sbc Small Block
$26.99
Time Remaining: 4d 7h 56m
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Head Bolts Chevy 350 383 400 327 305 307 283 262 267 302 sb sbc Cylinder New Set
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Time Remaining: 4d 8h 1m
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Guide Plates Chevy 400 350 327 305 283 265 3 8 Push Rod Pushrod sbc sb
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Raised Guide Plates Chevy 400 350 327 305 283 265 3 8 Push Rod Pushrod sbc sb
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Valve Spring Shims Chevy 350 400 327 305 283 Cadillac 472 500 1250x812 Shim
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Valve Spring Shims Chevy 350 400 327 305 283 Cadillac 472 500 030 x 1250x812
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$26.99
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Valve Spring Shims Chevy 350 400 327 305 283 Cadillac 472 500 015 x 1250x812
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$26.99
Time Remaining: 4d 8h 21m
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ARP Chevy 305 350 Vortec Engine  Accessory Kit Black Oxide 12 Point 534 9704
ARP Chevy 305 350 Vortec Engine Accessory Kit Black Oxide 12 Point 534 9704
$127.00
Time Remaining: 4d 8h 33m
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Chevy 305 Vortec Heads
Chevy 305 Vortec Heads
$400.00
Time Remaining: 4d 16h 39m
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World Products 042650 1 Small Block Chevy 305ci S R Cast Iron Cylinder Head
World Products 042650 1 Small Block Chevy 305ci S R Cast Iron Cylinder Head
$542.99
Time Remaining: 5d 3h 15m
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ARP SB Chevy Small Block 305 350 Vortec Engine  Accessory Kit ARP 534 9504
ARP SB Chevy Small Block 305 350 Vortec Engine Accessory Kit ARP 534 9504
$189.40
Time Remaining: 5d 6h 4m
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87 92 Camaro Firebird 50 305 4bbl TBI Center Bolt Valve Cover Bolts Retainers
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$7.00
Time Remaining: 5d 8h 31m
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REBUILT 305 CHEVY VORTEC CYLINDER HEAD 059 520CASTING
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$230.00
Time Remaining: 5d 8h 37m
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FUEL PUMP CONVERSION JIG CHEVY 305 350
FUEL PUMP CONVERSION JIG CHEVY 305 350
$650.00
Time Remaining: 5d 8h 40m
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$29.99
Time Remaining: 5d 17h 43m

REBUILT 305 CHEVY VORTEC CYLINDER HEAD 059 520CASTING NO CORE
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$230.00
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Chevy BBC 396 305cc 119cc Hydr R Complete Aluminum Cylinder Heads
Chevy BBC 396 305cc 119cc Hydr R Complete Aluminum Cylinder Heads
$1,045.00
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Chevy BBC 396 305cc 119cc Hydr FT Complete Aluminum Cylinder Heads
Chevy BBC 396 305cc 119cc Hydr FT Complete Aluminum Cylinder Heads
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Chevy BBC 396 305cc 119cc Solid FT Complete Aluminum Cylinder Heads
Chevy BBC 396 305cc 119cc Solid FT Complete Aluminum Cylinder Heads
$1,020.00
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Push Rod Set 16 sbc 283 305 327 350 Chevy GMC 62 86 Stock Replacemnt Set EPR34B
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$28.20
Time Remaining: 8d 6h 37m
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Chevy SB 265 283 305 FERREA 5000 Stainless Intake Valves Set 8 1725+4910
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Time Remaining: 8d 7h 36m
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Chevy SB 265 283 305 307 FERREA 5000 Stainless Intake Valves Set 8 1840+4910
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Time Remaining: 8d 7h 37m
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305ci 50L CHEVY cylinder head single  378450
305ci 50L CHEVY cylinder head single 378450
$200.00
Time Remaining: 9d 55m
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ARP Connecting Rod Bolts 1967 1994 Chevy 305 307 350 V8 Set of 16 134 6003
ARP Connecting Rod Bolts 1967 1994 Chevy 305 307 350 V8 Set of 16 134 6003
$70.00
Time Remaining: 9d 10h 42m
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76 95 Chevrolet 305 50L V8 STELLITE 8Exhaust Valves
76 95 Chevrolet 305 50L V8 STELLITE 8Exhaust Valves
$71.10
Time Remaining: 9d 11h 15m
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76 95 Chevrolet SBC 305 50L Chrome 8Exhaust Valves
76 95 Chevrolet SBC 305 50L Chrome 8Exhaust Valves
$32.40
Time Remaining: 9d 11h 16m
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ARP SB Chevy Small Block 305 350 Vortec Engine  Accessory Kit ARP 534 9504
ARP SB Chevy Small Block 305 350 Vortec Engine Accessory Kit ARP 534 9504
$189.40
Time Remaining: 9d 13h 20m
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1996 2002 CHEVROLET GMC 305 50L V8 VORTEC 8EXHAUST VALVES
1996 2002 CHEVROLET GMC 305 50L V8 VORTEC 8EXHAUST VALVES
$44.95
Time Remaining: 9d 13h 21m
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96 02 Chevy Vortec 305 50L Stellite 8Exhaust Valves
96 02 Chevy Vortec 305 50L Stellite 8Exhaust Valves
$72.00
Time Remaining: 9d 13h 21m
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Chevy SBC V8 400 350 327 307 305 283 8Exhaust Valves
Chevy SBC V8 400 350 327 307 305 283 8Exhaust Valves
$32.40
Time Remaining: 9d 13h 40m
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Chevy BBC 396 305cc 119cc As Cast Bare Aluminum Cylinder Head
Chevy BBC 396 305cc 119cc As Cast Bare Aluminum Cylinder Head
$712.50
Time Remaining: 9d 14h 31m
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Chevy 265 283 302 50 305 57 350 400 Cylinder Head Bolts+Washers Set Kit
Chevy 265 283 302 50 305 57 350 400 Cylinder Head Bolts+Washers Set Kit
$39.19
Time Remaining: 10d 4h 13m
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Chevy 265 283 305 50 50L 307 327 350 57 57L 400 ARP Intake Bolts Set Kit
Chevy 265 283 305 50 50L 307 327 350 57 57L 400 ARP Intake Bolts Set Kit
$35.70
Time Remaining: 10d 4h 23m
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87 92 ORIGINAL CHEVROLET CAMARO V8 305 50 CYLINDER HEADS  14102187
87 92 ORIGINAL CHEVROLET CAMARO V8 305 50 CYLINDER HEADS 14102187
$199.99
Time Remaining: 10d 5h 33m
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Chevy 283 327 305 350 Elgin Stainless Intake Valves Set 8 202 head diam
Chevy 283 327 305 350 Elgin Stainless Intake Valves Set 8 202 head diam
$53.25
Time Remaining: 10d 6h 47m
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Chevy 305 283 327 350 ELGIN Stainless Intake Valves 194 ENGINE BUILDER BULK 48
Chevy 305 283 327 350 ELGIN Stainless Intake Valves 194 ENGINE BUILDER BULK 48
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Time Remaining: 10d 6h 48m
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Chevy 305 283 327 350 ELGIN Stainless Intake Valves 194 ENGINE BUILDER BULK 24
Chevy 305 283 327 350 ELGIN Stainless Intake Valves 194 ENGINE BUILDER BULK 24
$113.76
Time Remaining: 10d 6h 50m
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Chevy 283 327 305 350 ELGIN Stainless Exhaust Valves Set 16 stock 491 length
Chevy 283 327 305 350 ELGIN Stainless Exhaust Valves Set 16 stock 491 length
$54.00
Time Remaining: 10d 7h 9m
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Elgin EHC99S SBC SB Small Chevy Cylinder Head Bolts 283 305 327 350 377 383 400
Elgin EHC99S SBC SB Small Chevy Cylinder Head Bolts 283 305 327 350 377 383 400
$29.98
Time Remaining: 10d 9h 9m
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88 89 90 91 92 93 94 95 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L 77531
88 89 90 91 92 93 94 95 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L 77531
$74.99
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88 89 90 91 92 93 94 95 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L 77530
88 89 90 91 92 93 94 95 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L 77530
$74.99
Time Remaining: 10d 9h 15m
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Chevy 305 50 76 93 Car Engine Head Bolt Set
Chevy 305 50 76 93 Car Engine Head Bolt Set
$13.77
Time Remaining: 10d 9h 36m
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Chevy 305 50 76 02 Truck Engine Head Bolt Set
Chevy 305 50 76 02 Truck Engine Head Bolt Set
$13.77
Time Remaining: 10d 9h 37m
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CHEVROLET 50 HEAD BOLT SET 96 01
CHEVROLET 50 HEAD BOLT SET 96 01
$35.00
Time Remaining: 10d 11h 41m
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96 97 98 99 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L
96 97 98 99 CHEVY 1500 PICKUP CYLINDER HEAD 8 305 50L
$100.00
Time Remaining: 10d 13h 51m
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87 88 89 90 91 92 CHEVY CAMARO CYLINDER HEAD 8 305 50L
87 88 89 90 91 92 CHEVY CAMARO CYLINDER HEAD 8 305 50L
$65.00
Time Remaining: 10d 14h 38m
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