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Old 06-14-2008, 11:45 AM   #1
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Car: 1984 Z28 HT,2006 2500HD
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305 carb to 350 tpi gas milage?
my z28 was just smashed in an accident and im not entirely sure if shes gonna make it. shes got a carbed 305 and if i have to buy a new car im not going anything less then a tpi motor and i want a 350 so will i notice a mjor difference in gas mileage? cuz ive been told not. thanks in advance
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Old 06-14-2008, 12:16 PM   #2
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: LS1 (LS1)/LQ4
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Properly tuned, TPI will get better mileage than carb.
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Old 06-14-2008, 02:52 PM   #3
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Re: 305 carb to 350 tpi gas milage?
even with the extra 45 ci?
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Old 06-14-2008, 04:52 PM   #4
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Yes. It's a much more efficient system.

In fact, LT1's get better mileage than L98's, and LS1's get better mileage than LT1's, even though each represents a step up in power.
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Old 06-14-2008, 11:21 PM   #5
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Re: 305 carb to 350 tpi gas milage?
cool i never knew that. thats exactly the answer im looking for
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Old 06-14-2008, 11:21 PM
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