Without questioning, the 350 is Popular Engine's most usual small-block engine, both for street and high-performance applications. Anterior produced in 1968, the 350 featured a surprising dimensions of capacity for its extent. On the other hand, the 350 can be unreal to fabricate considerably enhanced authority than it did from the works. The material to building horsepower with the 350 is improving its restrictive inventory fuel delivery and exhaust systems. Parts choice is critical, so always consult the heterogeneous manufacturers to arbitrate which type of Element is best kind for the engine's intended bourn.
Instructions
1. Modify the cylinder heads with aluminium aftermarket heads. Within the cylinder heads are the valves, which are partially bound to for directing air and fuel into the combustion chambers. The 350's inventory valve sizes are relatively humble and in consequence restrictive. Aftermarket heads detail larger valves, which sanction a better quota of air and fuel to arrive the combustion chambers, which accretion the engine's potentiality output. Aluminium aftermarket heads are very considerably lighter than the 350's inventory fling iron heads, which reduces the weight of the vehicle, thereby moulding it quicker.
2. Alternate the intake manifold with an aluminium aftermarket unit. The 350's inventory intake manifold has the equivalent deficiency as close the stock cylinder heads. Before the air and fuel mixture reaches the cylinder heads, that mixture must first flow through the eight passages within the intake manifold. The stock passages are smaller than the passages in aftermarket manifolds. Replacing the manifold will allow the cylinder heads to get the additional air and fuel they need. The aluminum design will also reduce the weight of the vehicle.
3. Replace the carburetor with one that flows more air and fuel. As a consequence, the engine is now also producing more exhaust. If the exhaust fumes are not routed away from the engine fast enough, the engine's power output will suffer. Therefore, replace the restrictive stock exhaust manifolds with exhaust headers, and install a dual exhaust system, which will quickly carry the fumes away from the vehicle. The biggest mistake when selecting a carburetor is choosing one which produces more air and fuel than the engine can handle, so always discuss the purpose for which the engine will be used with the carburetor company to determine which carburetor is best for the application.
4. Replace the stock exhaust manifolds and exhaust pipes with headers and a dual exhaust system. With the aftermarket cylinder heads, intake manifold and carburetor, the engine is now producing more power and burning more fuel. With the replacement cylinder heads and intake manifold ready for a greater quantity of air and fuel, it is necessary to replace the stock carburetor with a unit that can produce a larger quantity of air and fuel. Carburetors are rated in cubic feet per minute, or "cfm" for short. The higher the cfm number, the more air and fuel the carburetor can produce.
