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What octane fuel grade should you put in your 5.7 liter firebird?
Wiki User
∙ 16y ago
My trans am gt 1994 with a 5.7 recomends premium fuel. ive ran the car with both regular and premium . It runs fine with regular but you can definetly feel the difference. it just runs stronger with premium and is probably better for the injectors
Wiki User
∙ 16y ago
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