MSD, as one example, offers a terrific OptiSpark replacement distributor as does Accel. It has also been refined and improved by both GM and the aftermarket. However, OptiSpark has always been problematic. The cam-driven water pump with reverse-flow cooling and OptiSpark ignition system were revolutionary. II LT1 Chevrolet small-block (L98) introduced in the 1992 Corvette was an updated version of the time-proven small-block first introduced in 1955 with its share of interesting refinements-some quite controversial. TPI endured and remained an industry standard for years. Tuned Port Injection (TPI), which was tunable and certainly a smashing success. Injection in 1982, which didn’t impress anyone. With and Chevrolet was paying close attention. Those fuel-injected 5.0L Mustangs were a force to be reckoned Performance became more in style, with Chevrolet leading the pack in that age-oldīattle with Ford. By the mid-1970s, the honeymoon was over. ![]() In the years to follow, the LT1 lost adrenaline to tough federal emission standards and higher auto insurance rates. ![]() It was the last really hot Chevy small-block ever done, with the exception being the high-revving Trans Am-inspired 302 c.i.d. Those in the know remember the original 350 cubic-inch LT1 introduced in 1970 was a real powerhouse with a hot mechanical cam and 370 horsepower on tap from the factory. ![]() Chevrolet’s LT1 engine family evokes all kinds of emotions among Bow-Tie guys.
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