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Difference between revisions of "Cadillac V8 engine"
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In 1982 the HT4100 was the standard engine for the front-wheel-drive Eldorado and Seville. It was also placed in many rear-wheel-drive DeVilles, and was available for the Fleetwood. | In 1982 the HT4100 was the standard engine for the front-wheel-drive Eldorado and Seville. It was also placed in many rear-wheel-drive DeVilles, and was available for the Fleetwood. | ||
The HT4100 was prone to failure of the intake manifold gasket. It may not have been the most successful engine to sit under the hood of a Cadillac, but potential buyers were no more satisfied with the other two engines available at the time, the V8-6-4 and the Oldsmobile 5.7 L Diesel. Reliability issues soiled the reputation of the HT4100. Kits were sold to retrofit the cars with Chevrolet engines (Buick and Oldsmobile V6s would also fit, but were much harder to install). Sales remained strong, exceeding 100,000 in 1984. | The HT4100 was prone to failure of the intake manifold gasket. It may not have been the most successful engine to sit under the hood of a Cadillac, but potential buyers were no more satisfied with the other two engines available at the time, the V8-6-4 and the Oldsmobile 5.7 L Diesel. Reliability issues soiled the reputation of the HT4100. Kits were sold to retrofit the cars with Chevrolet engines (Buick and Oldsmobile V6s would also fit, but were much harder to install). Sales remained strong, exceeding 100,000 in 1984. Cadillac's share of the luxury car market diminished rapidly after 1985. | ||
For 1987 a more powerful version of the 4.1 L engine was introduced in the [[Cadillac Allante]], using a different [[camshaft]] profile and roller [[rocker arm]]s to reduce valvetrain friction, in addition to [[Fuel injection#Multi-port fuel injection .28PFI or EFI or SEFI.29|multiport fuel injection]]. This engine was rated at {{Convert|170|hp|kW|0|abbr=on}} at 4300 RPM and {{Auto lbft|235}} of torque at 3200 RPM. The 4.1 was superseded by larger-displacement engines, and ceased production after the 1988 model year. | For 1987 a more powerful version of the 4.1 L engine was introduced in the [[Cadillac Allante]], using a different [[camshaft]] profile and roller [[rocker arm]]s to reduce valvetrain friction, in addition to [[Fuel injection#Multi-port fuel injection .28PFI or EFI or SEFI.29|multiport fuel injection]]. This engine was rated at {{Convert|170|hp|kW|0|abbr=on}} at 4300 RPM and {{Auto lbft|235}} of torque at 3200 RPM. The 4.1 was superseded by larger-displacement engines, and ceased production after the 1988 model year. | ||
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The 275hp version was available starting in 1994 on all models | The 275hp version was available starting in 1994 on all models | ||
except Seville STS and Eldorado ESC and the rear-drive Fleetwood. | except Seville STS and Eldorado ESC and the rear-drive Fleetwood. | ||
These models,including the Allante had 300hp versions of the Northstar. | These models,including the Allante had 300hp versions of the Northstar. | ||
300hp (citation needed) on 2000-2005 | 300hp (citation needed) on 2000-2005 | ||
315hp on 2005-present | 315hp on 2005-present | ||