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Opinions please, what mpg for 370's or 408's?

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Old 05-02-2008, 11:25 PM
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Default Opinions please, what mpg for 370's or 408's?

Looks like Ill probably order my short block on Monday. Because gas prices have not topped out yet, I am concerned. I am going to drive it daily so I can do what I bought it for, enjoy it. But, it just makes sense to consider the cost of operation for a DD. I have 4.10's now but still have my 3.42's in storage. I was getting 21-22 with the 5.3. Going to tighten up the converter to maybe 2600? OK guys, tell me what you think, 370 or 408!
Old 05-03-2008, 12:15 AM
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Originally Posted by ZO6Ted
Looks like Ill probably order my short block on Monday. Because gas prices have not topped out yet, I am concerned. I am going to drive it daily so I can do what I bought it for, enjoy it. But, it just makes sense to consider the cost of operation for a DD. I have 4.10's now but still have my 3.42's in storage. I was getting 21-22 with the 5.3. Going to tighten up the converter to maybe 2600? OK guys, tell me what you think, 370 or 408!
Are you staying with the same turbo?
Old 05-03-2008, 12:31 AM
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LOL, you are considering gas mileage as a factor for your engine build? You are a fool man.
Old 05-03-2008, 12:33 AM
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Originally Posted by ZO6Ted
OK guys, tell me what you think, 370 or 408!
ECOTEC 2.0L.
Old 05-03-2008, 12:42 AM
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Originally Posted by stock48
Are you staying with the same turbo?
Yeah, I would like to so I can keep the costs down but I don't have to. I was thinking 10lbs with my GT 67?
Originally Posted by RandomHero
LOL, you are considering gas mileage as a factor for your engine build? You are a fool man.
Yeah probably. I should put the motor in the Vette and the ls6 in the truck, but I guess I just like the truck better as a DD.
Old 05-03-2008, 12:44 AM
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Originally Posted by ZO6Ted
Yeah, I would like to so I can keep the costs down but I don't have to. I was thinking 10lbs with my GT 67?

Yeah probably. I should put the motor in the Vette and the ls6 in the truck, but I guess I just like the truck better as a DD.
Just seems like a silly thing to worry about when you're going to drop at least $5k on an engine. To each his own though I guess.
Old 05-03-2008, 12:45 AM
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Originally Posted by InchUp
ECOTEC 2.0L.
NOT! BTW, your truck is gonna be fun.
Old 05-03-2008, 12:51 AM
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Originally Posted by RandomHero
Just seems like a silly thing to worry about when you're going to drop at least $5k on an engine. To each his own though I guess.
I can see spending on something worthwhile like the engine, that is if it lasts a while, just want to get a few miles down the road for my $75 fillup. That's why I went FI instead or NO2. It is my DD, not a race only vehicle. What do you think, which one Random.
Old 05-03-2008, 12:54 AM
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Originally Posted by ZO6Ted
I can see spending on something worthwhile like the engine, that is if it lasts a while, just want to get a few miles down the road for my $75 fillup. That's why I went FI instead or NO2. It is my DD, not a race only vehicle. What do you think, which one Random.
Well I see vids of spoolin 370 setup and it really rocks. Then again there are n/a 408 guys running great times. I didn't read too far into your build, but I'm assuming you're going with a turbo? I guess it would depend on your FI plans.
Old 05-03-2008, 12:59 AM
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Yeah, I'm stayin with the turbo. I really would like to do this once though. I know, I know, it never really ends.


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