Editing Ford small block engine (section)

====GT-350====
For 1968 only, there were three versions of the engine. The standard powerplant was a 302-4V with a high-rise manifold (basic intake at first), a Holley four-barrel 600 CFM carburetor and a dual exhaust, producing {{cvt|250|hp|kW|0}} at 4,800&nbsp;rpm and {{cvt|310|lbft|Nm|0}} at 2,800&nbsp;rpm. An optional, factory installed, Paxton supercharger was available that increased the GT350's output to {{cvt|335|hp|kW|0}} at 5,200&nbsp;rpm and {{cvt|324|lbft|Nm|0}} at 3,200&nbsp;rpm.{{cn|date=January 2025}}. A special high-performance Shelby-modified version of the 302 was offered by Ford in the Shelby GT350 as a mid-year replacement during the model-year.<ref>{{cite web|url=http://thecarsource.com/shelby/1968/1968specs.shtml|title=1968 Shelby Cobra Mustang Specs on thecarsource.com|access-date=21 November 2016}}</ref> Key features included: an angled, high-rise aluminum or iron intake manifold, a larger [[Holley Performance Products|Holley]] four-barrel 715 CFM carburetor, and bigger valves of {{cvt|1.875|in|mm}} intake and {{cvt|1.6|in|mm}} exhaust. It had a longer-duration camshaft, still with hydraulic lifters. The heads had special close-tolerance pushrod holes to guide the pushrods without rail rocker arms or stamped steel guide plates. The combustion chambers also featured a smaller quench design for a higher compression ratio and enhanced flow characteristics. Additionally, high-flow cast exhaust manifolds similar to those on the 289 Hi-Po K-code engine further improved output. Heavy-duty connecting rods with high-strength bolts and a [[nodular iron]] crankshaft were also included in this package. Rated power (SAE gross) was estimated at {{cvt|315|hp|kW|0}} at 5,000&nbsp;rpm and {{cvt|333|lbft|Nm|0}} at 3,200&nbsp;rpm.{{cn|date=January 2025}}. The package, which cost $692 including some other equipment, was not popular and did not return for 1969. This engine is documented in the Ford factory engine repair manual for 1968 Mustangs and Fairlanes.{{cn|date=May 2024}}