Why not to use a small-block Chevy engine
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The small block Chevrolet (SBC) engine is popular, reliable, powerful, and has almost unlimited potential. However, the use of small-block Chevrolet engines (specifically, the 350) is controversial in hotrodding culture.
Pre-1949 cars and trucks are generally where engine swaps are most common, and the builder has almost total control over the choices he makes. Those who oppose the use of small block Chevrolet engines typically approve the use of SBCs in muscle cars that originally came with them.
Those who oppose the use of such engines offer several arguments in support of their point of view.
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[edit] Mechanical
The SBC is regarded as "reliable and cheap to build". However, it is not the only reliable and cheap to build engine. Many other similarly reliable choices exist, and they are only marginally more expensive to build. Examples include Ford's 289-302 engine family, and Chrysler's 318-360 small blocks "(citation needed)". This family of engines has a rear sump pan, just like the SBC, and can be easily installed in most hot rods.
It should be noted that internally motors like the Mopar (Chrysler) 318 were considered indestructable, at least in stock configurations. The engines would just run forever thanks in part to a short stroke, long connecting rod in combination with shaft mounted rocker arms. Additionally, the 318 produced very good horsepower and torque for its displacement, and are in high supply. They were used in nearly every class of vehicle that Chrysler Corporation built.
As another example, even today, Ford small blocks have a reputation of being easy on the main bearings, a sign of a well designed (or overbuilt) block and crank.
Bottom line, there are many choices besides small block Chevys, each with their own pluses and minuses. History will show that there are always engines that are particularly troublesome (not the Ford, Chevy or Mopar mentioned above), but for a low mileage application that concern should be minimal. Chevy 327, 350, and 400 small blocks normally hold together better than other non-common engines due to their thicker cylinder walls.
[edit] Cultural
As with many hobbies, originality is prized among hotrodders. Small-block Chevrolet engines are fairly common, so those who use them are often forced to sacrifice the bragging rights that typically accompany an unusual engine choice.
By opting for lesser-known or more original engines, hotrodders can preserve and enhance the cultural and mechanical diversity that is essential to hotrodding culture.
Oftentimes, an uncommon engine will be well received in the hotrodding community, simply because it's uncommon. Examples of uncommon engines are Early Hemi engines, Buick Nailhead, 472 & 500 Cadillac big blocks, Ford Flathead V8, Chevy 348 and 409 engines, Early Olds Rocket V8 etc. Most vintage inline 6-cylinder engines are also well-received.
Some of these engines do have downsides, such as the Ford Flatheads problem with cracking. However being unique does come at a cost -- those that choose the uncommon engine have already outweighed the cost of going fast cheap, or being noticed for originality.
[edit] Originality, creativity, and individuality
Many people seem to apply their originality and creativity when making paint and interior choices, but their individuality is not similarly reflected in their choice of engine.
In the automotive world, as in most hobbies, the price paid for being an individual and a leader is almost always worth the extra effort.
[edit] Engine fitment issues are not insurmountable
Dealing with clearance issues or fabricating engine mounts for non-SBC engines is not really that difficult. (this could use more details)
The SBC's rear mounted oil pickup creates a "sump hump" that may also cause an installation problem. In tight compartments it may interfere with the vehicle's steering components or frame cross members.
Another item to consider is the placement of the distributor. In the tri-five they designed a ton of room ahead of the radiator, but the distributor is almost touching the firewall and is directly under the wiper motor. Where's a front mounted distributor SBC when you need it?
[edit] Understanding price
A teenager working on his first car may very well be financially forced to choose a SBC. However, for someone who's spending $10,000 to $20,000 on his prize street rod, the cost difference is negligible.
Also, unique hot rods with unique engines may have higher resale values than cookie-cutter SBC rods.
[edit] Historical
By focusing on building and running lesser-known engines, hotrodders are able to preserve the historical legacy inherent in many of the less popular (but more notable) engines. By creating a demand for such parts, individual hobbyists can help to support the businesses and parts suppliers necessary to fuel the perpetuation of engine history.
[edit] The Chevy 235 Inline Six
The old Chevy inline six engines are by far one of the best "nostalgia" hot rod engines on the road. They may not be capable of as much power as a small block, but they are by no means weak. There are several great parts suppliers on the net, including Patrick's Antique Cars and Clifford performance. You can get a dual carb intake for $200-300, dual exhaust headers for about $150, and spend a few hundred for some nice dress-up like a Wayne valve cover and side covers, and a beehive oil filter and matching beehive air cleaners. You'll have a nice nostalgia piece for that ol' classic.
[edit] Related articles
Just click the "edit" tab at the top of this page, or click one of the [edit] links to the right of an article section.
Contributors to this page
Bull 81073, Centerline, Crosley, Iowa505, Jon, Klutchmaster427, NorCalChris
