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Old 02-13-2003, 06:48 AM
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Post small block vs big block

If you are building a new rod. Why would you go with a small block or big block? My first thought is that you always go with the big block, cause its bigger and stronger and more powerful. But of course you can get a lot (and probably plenty) of horses out of the small block.

Do people just start with small blocks cause they have a core from the wife's impala? Or do they buy a new small block cause they prefer them? Why would you start with a smaller engine?

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Old 02-13-2003, 07:01 AM
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Hi from Pasadena!
The question should be answered by another question. What kind of car are we talking about installing this engine in and what will it be used for?
Example: Installing a big block in a T-bucket roadster just doesn't make sense since you really have a problem getting all that power to the road. A hot small block roadster will launch like a rocket ship while the stock big lock roadster sits in a cloud of tire smoke. Of course, the old adage that power to weight is the name of the game would apply in spades to this roadster example. It's just the practicality of harnessing that power to the road that is the trick part.
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Old 02-13-2003, 07:06 AM
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Off the top of my head...
weight savings (not much, but some)
cost (SBC is allot cheaper to build)
fuel consumption (I know, who cares)
availiability (SBC much more common)
size (SBC fits in almost anything)
rules (race class says I may not exceed 355 ci)

Hot Rod or Car Craft just did a SBC vs a BBC track test.
The results weren't surprising, but were interesting nonetheless.
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Old 02-13-2003, 11:50 AM
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Well i might really p!ss some people off here but here goes....cubic inches are good.... if you have a 4200 lb caprice. Small blocks wind faster, the faster you wind the faster you go, can make awesome power for just about any street car,and basically the small block chevy is the best motor in the world hands down, you really cant argue with that. There way less expensive to build, They typically dont make enormous amounts of torque wich unless you are tubbed have a 15" wide slicks and a full race chassis you dont want 600 ft lbs, torque is only good if you can get it to the ground and spinning your tires at the strip is useless, And the SBC's make great upper rpm horsepower wich is what gets you good E.T.'s, Dont get me wrong, i love watching the Chicago super street outlaws, those guys kick *** {low 8 second big block wheel standing street cars} But when it comes down to it for the avrege car freak, the SBC is cheaper, lighter, faster reving, easier to build, easier on gas, Not as torquey, but torquey enough, and there is such an over load of after market pats its rediculous, and really i think you get more power for the dollar. why pay more for the same power? Again thats my opinion.....now lets hear some pissed off rebuttals from the big block crowd
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Old 02-13-2003, 03:37 PM
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my thoughts exact!
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Old 02-13-2003, 05:24 PM
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I have a 350 block with 305 heads and it is perfect for what i want to do with it so i say the 350 but i am just a teen that likes old chevy pickups.
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Old 02-13-2003, 05:52 PM
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Stick with the small block. I have a 305 that I built up and it can manhandle over 3/4 anything else here. Trick is to get the right combo from the wide array of parts and gadgets for it. If anything just hook up a bottle to it. Makes for enjoyment for everyone then <img src="graemlins/pimp.gif" border="0" alt="[pimp]" />
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Old 02-13-2003, 10:06 PM
E.T. divided by $ spent= Speed
 
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Small blocks are cheap!! When building 300-350HP you can do it for pennies.Theres billions of them around and they all inter change with limited exceptions.
Because there so common theres a million parts avalible for them aftermarket wise.
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Old 02-13-2003, 11:11 PM
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i hear ya, i like the small blocks better because i use them on the street "better on gas i think" small blocks are cheaper to build tons of parts everywheres. what i did once was take a Mr Goodwrench motor and put a healthy cam and good in take and carb on it and it was just fine, made a good strong little motor for the street never had no problems with it at all. Right now in my new truck i have i have a 350 with a few goodies in it and i love it i am at the 450 horsepower range at rear wheels and its awesome not much can hang with it on the street. go with the small block, another thing to big blocks can produce huge amounts of torque, in other words if your vehicle isnt set up for big torque you can really screw some stuff up i've seen it happen plenty of times. the sb makes enough torque to be happy and good horsepower on top end, good luck though just have fun with it
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Old 02-14-2003, 04:57 AM
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What about the sexiness of it? A 427 with dual quads is just plain testosterone. Even if it is mild as a lamb. It just produces enough torque to impress.

If I want to produce a smooth, daily driver 450HP then what is simpler than a 427? How much more would it cost to have my big block? I am thinking of a 70 camaro. "Yenko clone"

Basicly, my question is: Is it easier to produce 450HP with a big or small block? And it has to be dependable, daily driver, HP.

Second question: Why does "427" better sounding that "454" ? Or am I showing my age. it just sounds better to my ear. I can imagine having 427 emblems on my camaro, but never 454.
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Old 02-14-2003, 05:43 AM
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i am a small block man, big blocks are for. well never mind, you can get a godd 350 rebuild kit from northern auto parts for 154 dollars, good price huh!
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Old 02-14-2003, 06:09 AM
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In street rods, Some people just like the looks of a small block or a big block. And in some case power don't have anything to do with it.

Like my frist T-Bucket i had a 409 with a 6-7 blower, I wasn't much good.to much power for a T. but sure looked mean. The T-Bucket i have now has a 350 with a 6-71 rate at 570 hp. To much horse power for a T but sounds and looks good.

In a street rod, It all depends on what you like to look at and the sound you want.

just my 2 cents
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Old 02-14-2003, 06:17 AM
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It just depends what you want. A big block with loud pipes is an instant head turner. I'd also have to day that a BB is more streetable than a built up SB, there is alot more low RPM torque there to pull in higher gears, which makes the car a better cruiser.

BTW, JUSTINH, I agree, a 427 is sexier than a 454. Maybe because the 454 is a truck engine

[ February 14, 2003: Message edited by: 78novaman ]</p>
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Old 02-14-2003, 08:07 AM
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The only BB I run in I my 69poncho. I have been colleting sb stuff for years. Its cheaper to build and easier to find HiPo stuff for. By find I mean the parts are at the drag race swapmeets. You MUST know what you are looking at and have a fair idea of what its worth.


Todd
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Old 02-14-2003, 09:58 AM
E.T. divided by $ spent= Speed
 
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Whens the last time ya heard someone say "Well I was on a tight budget so I decided to throw in a CHEAP bigblock to get it goin".
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