LT1-LT4 Modifications 1993-97 Gen II Small Block V8

l99

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Old 02-02-2010, 04:18 PM
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does anyone know anything about this motor
Old 02-02-2010, 04:22 PM
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is commonly known as the baby LT1:
3.736 in bore blocks
[edit] L99 (4.3L)
A 4.3L (263in3) was a 305 with updated block architecture to be Generation II and a reduced 3 inches (76 mm) stroke. It was designated the L99, and was introduced in 1994 for the Chevrolet Caprice. It was externally identical to the LT1, but the bore was 3.736 inches (94.9 mm) and the stroke to 3 inches (76 mm) giving it a displacement of 263 in3. The pistons used in the L99 were the same as the ones used in the Vortec 5000, but 5.94 inches (151 mm) connecting rods were used to compensate for the shorter stroke.

Like the LT1, it features sequential fuel injection, reverse-flow cooling, and an optical ignition pickup. Output is 200 hp (150 kW) and 245 lb·ft (332 N·m). Due to its smaller displacement, it provides better fuel economy than the 5.7 L LT1, but at reduced horsepower & torque levels.
What exactly are you wanting to know? It also has cast iron heads
Old 02-02-2010, 06:59 PM
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External stuff like intake manifold, fuel rails, timing cover etc. are the same as the LT1
Old 02-02-2010, 08:45 PM
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I know that I may be looking for one at the right price.
Old 02-02-2010, 08:47 PM
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Gizmo, I'm sure you could probably find them for damn near free!!
Old 02-02-2010, 09:54 PM
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Originally Posted by duh
Gizmo, I'm sure you could probably find them for damn near free!!
If I could find them that cheap, I would buy ten!
Old 02-02-2010, 10:04 PM
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If you're that interested I'll keep an eye for 'em when we get the caprice's into the shop.....I'll even give my guys a call at the junk yard. I'm sure I can get ya few.
Old 02-02-2010, 11:37 PM
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L99 + solid roller cam + ported heads =




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