305 carb to 350 tpi gas milage?
Thread Starter
Senior Member
Joined: Jul 2007
Posts: 1,305
Likes: 1
From: Corner Brook, NL
Car: 1984 Z28 HT,2006 2500HD
Engine: 5.7L, 6.6Llbz dmax
Transmission: 700R4, 6 speed allison
Axle/Gears: worn out 3.73 posi
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
Thread Starter
Senior Member
Joined: Jul 2007
Posts: 1,305
Likes: 1
From: Corner Brook, NL
Car: 1984 Z28 HT,2006 2500HD
Engine: 5.7L, 6.6Llbz dmax
Transmission: 700R4, 6 speed allison
Axle/Gears: worn out 3.73 posi
Re: 305 carb to 350 tpi gas milage?
even with the extra 45 ci?
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
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.
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.
Thread Starter
Senior Member
Joined: Jul 2007
Posts: 1,305
Likes: 1
From: Corner Brook, NL
Car: 1984 Z28 HT,2006 2500HD
Engine: 5.7L, 6.6Llbz dmax
Transmission: 700R4, 6 speed allison
Axle/Gears: worn out 3.73 posi
Re: 305 carb to 350 tpi gas milage?
cool i never knew that. thats exactly the answer im looking for
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