I have a 51 Chevy 2dr sedan that I just want to make into a mild custom and a reliable cruiserI can get a '72 307 for free or a '78 305 and 350 trans out of a '78 camaro for $250I,m wondering which would be best for my low budget projectI know free is hard to beat,but I'm aware the 307,s aren,t well thought ofBoth have similar mileage,80kI,m not one who just Vortec on 305 and 350 Well, according to the book "Smallblock Chevy Performance" by Dave Emanuel, Vortec heads were intorduced for both 305 and 350 engines on the 1996 model year of trucks If you have a copy of the book, refer toAnswer (1 of 4) Stock no more than 230 (mercury marine, 4bl carb), in cars about 190, (225 hp in the '96'98 fullsize trucks) Chevrolet smallblock engine
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Chevy 305 vs 350 difference- 133 Posts #4 Huge difference With all the amazing deals going on, I say look for the Vortec 350 It is one of the best engines ever built If you really want the 305, you can get it, put some 350 heads on it with a higher lift camshaft beehive springs and rockers, larger fuel injectors and make it comparable TLittle quarter mile run back in the summer
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The 265 cu in (43 L) "TurboFire" V8 was the second Chevrolet smallblock; The 350 balancer is solid and the 305 balancer is hollow but either will fit and work (350 & 305 both have 348 stroke cranks) Re chevy 350 vs 305 heads 1151 PM Post# In response to chevytruckman No not really, if you are talking about the same type heads Of course 305 vortec heads will out flow the 350 heads that were put on a 1975 engine It
The 305's bore was even smaller than the 375 inch bore of the 265 CID V8 which was the first smallblock Chevrolet V8 The smallblock Chevrolet 302, 327, and 350 CID V8s all share the same large bore of 4000 inches The advantage of a large bore is it makes much better use of high performance cylinder headsWhether it was 2, 302, 305, 307, 327, 350, or even small block 400 All of these can be built to run very strong • Take the 350, rebuild it with standard size bearings and rings, but install a set of 305 heads , a RV style cam or Chevy 350/350 camshaft You can use a stock intake manifold with a quadrajet carb and you will have some decentAnswer (1 of 4) Your question is how can you get 350 hp from a 305 engine?
Our famous "Hum Baby" Chevy 350 crate engine!The 350 HO engine incorporates modern technology in a package that can be installed in applications where ci small block Chevrolet V8's were originally used This complete engine is assembled using brand new, premium quality components350 are basically the same engine The 305 just has a smaller bore(3736 vs 4000), not quite the power or torque, but durability should be almost identical It is more costy to rebuild a 305 than a 350 due to the popularity of the 350 If power is not an issue then go for the 305 if you can get one cheaper
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Horsepower is how fast you do your work (eg how fast can you get your car from one end of the track to the other) A 350 has more torque than a 305 Hp ratings for 305's range from just over 100 horse to around 0 stock and 350's range from about stock THose are really rough estimates for bone stock mills LE9 Years The LE9 5 L (305 cu in) was the truck/van version of the High Output 305 It also had flattop pistons for a 951 compression ratio, A 350, 327, and 307 all share the same bore, and each has a smaller stroke As far as im concerned, the 350 is a well balanced engine, the 327 is a destroked 350 ( yes, 327 came first I know ) and the 307 is one destroked from thatThe 305 is a whole different beast
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Location Raleigh / Holly Springs, NC I had a bone stock dish piston 8 headed 350 with a 280H cam, 331 gear, 2k stall ( yrs ago) that ran 980's in the 8th mile I bolted on a set of 305 heads and ran 9 1/8 mile first pass It did feel like a new car as well I did do some porting myself 734 Posts #17 the 350 at 1051 compression i would try and get that ratio down to about 101 with a decent set of heads, a good cam, intake and headers you can make around 350 hp (with decent stock iron heads that is) the carbed 305 HO were advertised at 250hp and i havent seen much that were living up to that much hp So a 305 up against a 350 (even at the same horsepower) will always lose to the larger engine because the 350 will make more torque I completely agree that a 305 can be built to make 450 hp That's not too difficult
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She's a smooth running machine that is suitable for a practical enthusiast looking for a higher quality engine than what GM offers 350 HP / 400 TQ 87 Regular Gas 5 Year/50,000 Mile Warranty MANY were 4bolt mains and I'd go on assuming it's a 350 That's the most common I mean if you have a 4" bore, why not make it a 350 302's and 327's just do not make sense any more unless your trying to do something 'particular' (class limits or original engine or something) As far as being 'something similar' to a 3, ummmmm No If we were to compare 2 similar chevelles, one with a 350 sbc and the other with a 454 bbc Both engines would have a mild performance build, at a modest expense, like 750 to 850 dp carbs, aluminum double plain intakes, Iron heads, like vortec on the sbs and oval ports on the bbc, headers, moderate performance cams, around 9 1/2 to 1 compression, auto trannys, similar
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5,586 Posts #4 (Edited) Janis, The 295hp 350 of 1967 and the 300hp 350 shared the same compression and same camshaft The heads were also essentially the same as far as port volume and shape, and combusion chamber volume and shape The carbs were essentially the same, the only difference I know of was the part numbers on theHowever, hotrodders from the dawn of time have made a religion out of modifying just such pedestrian offerings and turning them into hardcore racers While it may be GM's second son, the 305 is just as capable of producing 350plus horsepower as any of its larger siblingsThe 50L 305 V8 is an engine type manufactured by General Motors in the 1970s This engine was introduced to the Chevrolet as a small variant block in 1975 This is not a readily available engine type This engine has an advantage of being compatible with the 350 when it comes to the issue of interchangeable parts
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chevy 350 vs 305 I recently bought an 85 Iroc z28 Camaro The guy who sold it to me says that it has a 350 vette motor in it I could tell it was a vette motor by looking at the intake I knew going into the deal that the engine needed to be rebuilt Horsepower 215 email protected 190 email protected 170 email protected What are the differences between Chevrolet small block 305 cubic inch and 350 cubic inch engines? What the the difference between a 305 and a 350 Chevy engines What the the difference between a 305 and a 350 Chevy engines
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Vinclike I saidgenerally a 350 will make more power per dollar than a 305, eheather were talkin 250 HP or 500 HP If you have a 305 & you want to build, by all means go for it I like to do things differant to, of course when the hood is Now, for POTENTIAL performance, when you take a close look at the 307 vs 305, the 307 is the winner, hands down The 305 has a VERY small bore (like the original 5556 265s), whereas the 307 has the same bore as a 2 (3875) If you bore a 307 060 over and drop in a 350 crank, you get about 338 cubic inches the 305 is/was a boat anchor putting out a measly 145hp out of a v8 The only other v8 putting out less was the 307 at 135hp(not counting the 265 or 2)the 350 will destroy the 305!!!Even the worse 350 truck motor will put out more the a 305The 305 was one of chevys worse engines ever!!If you have a chance to get a 350 vs a 305get the 350
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350CI Specs Index Horsepower 350 hp @ 5,600 RPM Torque 380 lb/ft @ 3,600 RPM Compression Ratio 1101 Displacement 350 cubicinches (57 L) Cylinder Bore 400 inches (1016 mm) Stroke 346 inches (87 mm) Vehicles Using the L46 The L46 V8 is known primarily for its use in the Corvette, where it was presented as one of several engine options during 1969 The blocks for the Chevy 305 and the Chevy 350 are the same They have the same mounting location and size, the main difference between the two engines is the bore size and piston size The 350 gets a lot more attention than a 305 even though they are very similar to each other in terms of architectureYou need aluminum cylinder heads I think trickflow makes some for it You need a food good single plane intake and a larger camshaft 350hp would require quite a good head and cam on that small bore
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The 305 heads are different from the 350 heads If you use the 305 heads, they have a smaller combustion chambers and will increase the compression ratio As far as the computer, the 305 and 350 are interchangable, if you would like to reprogram the computer wait 4 me performance can make changes for n ot too much moneyInspired by the popular Chevy 350, the 305 had a more narrow bore and was placed in many widebodied GM model cars The Chevrolet Camaro, Caprice, Malibu, El Camino and Monte Carlo implemented the 305 along with the Pontiac Firebird and Grand Prix, Buick Skylark and Regal, the Oldsmobile Cutlass and Custom Cruiser, and the Cadillac Brougham Re Visual difference between 305 &350 0412 AM Post# In response to 19GVan My 77 305 had "305" cast into the block near the motor mount bosses This is the first gen 7679 drivers side dipstick type Most or all of the pass side dipstick blocks have 50 or 57 cast next to the casting # on the rear block ridge
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Dimensionally, the engines are identical, and most parts of the engines are interchangeable The engines use the same crankshaft and connecting rods, and have the same stroke, which is 3480 inches The single biggest difference is the bore size (3Federal emissions requirements of the 1970s took a big neutering knife to American muscle cars, and no car bled more than the Corvette The worst of it came in California — dang hippy librels! Ive had several 350's through the years And then I had a '75 Camaro that some schmuck stuck a 305 in It even had a somewhat beefy cam in it and my dad's Chevelle with a stock 350 beat my Camaro all the time That engine's a dog Use the 2
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Problem number two with the 305 is the small bore size The bore (3736inch versus 400 for the 350) can ultimately limit head flow (by350 are basically the same engine The 305 just has a smaller bore(3736 vs 4000), not quite the power or torque, but durability should be almost identical330 HP Chevrolet HO flat top pistons dbl chain high performance cam, lightning cylinder heads, hardened pushrods, etc Replaces 265, 2, 305, 307,
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If you can get a good deal on a 305 go with it the only difference like someone said earlier is the bore size the only part the would not interchange between the two is the pistons and rings literally everything else will bolt up between the two comparing apples with apples (cam, heads, compression ratio, and so on) you will be down only about 15 to 25 horses over the 350 The 305 has a 1/4" longer stroke than the 327, so it just might have more lowend torque The streetstock 327's I worked on back in the 1960's and 70's were notorious gasguzzlers, although they made very good dirt track race engines after some pretty radical modifications A lowmileage 305 will probably make a better street engine for you Jerry Virtually any 350 heads will work on a 305 The high compression 350 heads are similiar in combustion chamber size & intake valve size to the 305 heads & will give a 305 the same performance as if using 305 heads But the low compression 350 heads (the ones with the 194"/2" intake valves) will give a 305 less performance because the
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— where stricter state regs required that the barely adequate 350 cuin smallblock in the 1980 Corvette be replaced with a wholly inadequate 305 V8, putting out 180 hp of pure shame As for teh 305 vs 350, well my uncle had a couple 305s (one was a 95, one was a 96), and they both got bad gas mileage when compared to a 350, and of course had nowhere near the power as the 350 (even the Vortec 305s are rated with more HP then my TBI 350, but I have drove a Vortec 305 before and it doesn'teven compare to my TBI 350)305 heads on a 350 You will find lots of hate on this one Putting 305 heads on a 350 was a good way to bump compression back in the day when compression was low, and aftermarket heads were almost "unattainable" Those days are long gone, and decent heads (be they aftermarket or Vortec) are cheaper than getting work done on old heads
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The first Chevrolet V8 was produced in 1917 The 265 cu in Turbo Fire engine was designed by Ed Cole's group at Chevrolet to provide a more powerful engine for the 1955 Corvette than the model's original " Blue Flame" inline six, the 162 hp (121 kW) 2barrel debut version went from drawings to production So if I get a pair of 350 heads and bolt them on my 305 will I see a noticable difference in HP gain or will I just be waisting my time Or what can I do to 305 heads to gain more HP 1975 Type LT Stock 350ciRochester CarbEdelbrock Performer IntakeSummit HEI 48,000 volt CoilDual Exhaust
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