So I finally found an engine. It is an all aluminum L33 5.3 liter, 310 hp from a 2005 Silverado with 32k miles. Bought at Jim's Auto Salvage in Sebring for $850, a bargain. The engine looks brand new. Being a truck engine I will have to make some changes to fit the Miata but they are minor. Changes include swapping the intake manifold for the lower profile LS6 car style, changing the water pump to a LS2 type along with the balancer, and swapping out the oil pan for a F-Body style for clearance. I may swap the camshaft for a Z06 cam to improve performance but still thinking about that one...depends on the budget.
Think it will fit?
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