4.8 Crank in 6.0 Block
07-19-2007, 08:56 PM
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4.8 Crank in 6.0 Block Just looking for some opinions. What about a 4.8 crank in a 6.0 block for an everyday driver twin turbo truck RCSB 2WD? You would have the 4 inch bore to let the heads breathe but, less stroke ( 3.270 ) for economy. I know it would make a little less torque, but the turbos would take care of that.
07-20-2007, 02:00 PM
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I started looking into 4.8 cranks for my 4.125 bore, but it looks like custom pistons and new rods would be needed. I didn't want to replace my good rods, and custom pistons do start getting expensive. You'd spend more on the motor than you'd save in gas.
The best way to save gas is not to drive at all. My Corvette is down waiting on a new motor, so it gets great gas mileage. If I could find E85 for my Avalanche, I'd burn only 20% of the gasoline I do now (13mpg E85 hwy vs. 17mpg gas hwy), I'd get 85mpg on the gasoline content. However since ethanol demand competes with food, it comes at a price of raising food (farm and dairy) prices, and milk is expensive enough. Moving from an efficient fuel to a resource intensive fuel will cost me more overall (I'd end up paying $5/gal for milk and $5/lb for steak).
If you spend $40 on gas per week, that's $2,080/year. Ten percent savings is $208 per year. Why spend lots of money on turbos and custom pistons if your goal is to save a little money on gas?
The best way to save gas is not to drive at all. My Corvette is down waiting on a new motor, so it gets great gas mileage. If I could find E85 for my Avalanche, I'd burn only 20% of the gasoline I do now (13mpg E85 hwy vs. 17mpg gas hwy), I'd get 85mpg on the gasoline content. However since ethanol demand competes with food, it comes at a price of raising food (farm and dairy) prices, and milk is expensive enough. Moving from an efficient fuel to a resource intensive fuel will cost me more overall (I'd end up paying $5/gal for milk and $5/lb for steak).
If you spend $40 on gas per week, that's $2,080/year. Ten percent savings is $208 per year. Why spend lots of money on turbos and custom pistons if your goal is to save a little money on gas?
Last edited by blu00rdstr; 07-20-2007 at 02:07 PM.
07-20-2007, 02:43 PM
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Originally Posted by Lextech
I understand your point. But, what I was thinking about is the 98% of the time that you are not in boost and are just driving normal.
