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Posting Guru
Joined: Mar 2005
Posts: 1,453
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From: Central,Texas
Why not make it a Detroit or Powertrax auto locker? Same price but better results! 3.73 isn't much difference from 3.55. If you're unhappy with your 3.55, why not take it to 4.10? Your 302 would love the revs.. It would put you right in the start and middle of your powerband on the highway!
Yea was thinking 4.10 or 3.73, i kinda like my Gas mileage now, also it is a daly driver not a Track truck i babby the hell out of this truck i want to get the most mileage out of it motor and trans before its "CRATE" time.
I already started a new Savings Account for the truck so when i am ready for the new powertrain when ever the current one dies. I just roled 136,000 miles pushing for 200,000
Post Fiend
Joined: Jan 2007
Posts: 7,021
Likes: 5
From: Almost Heaven
Yea was thinking 4.10 or 3.73, i kinda like my Gas mileage now, also it is a daly driver not a Track truck i babby the hell out of this truck i want to get the most mileage out of it motor and trans before its "CRATE" time.
I already started a new Savings Account for the truck so when i am ready for the new powertrain when ever the current one dies. I just roled 136,000 miles pushing for 200,000
I already started a new Savings Account for the truck so when i am ready for the new powertrain when ever the current one dies. I just roled 136,000 miles pushing for 200,000
I wouldn't be too concerned with the fuel mileage. Like I said I got 18 coming up here to WV and I have a 4.11 gear. It's probably closer to 3.73 or 3.55 with the 31 inch tires. So if you go to 3.73's, your RPM should be anywhere around three grand, which is where you start to really make power.
I'm not saying your fuel mileage won't take a hit but I don't think it would be as bad as you think it will be. It's too bad you can't experiment. Any other 302 guys here running some low gears? I think Lew is?
hey Lew, aren't you running a 4.10 gear?
Postmaster
Joined: Jan 2009
Posts: 4,558
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I don,t have any idea ??? Never checked the mileage , its not my daily driver just something to have fun with .. Never drive it in the rain or tow or haul any thing with it . I will check the mileage one day just to see what it gets , 5 mpg is ok with me ... Lew
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
Actually I don't like lockers. I had one in my previous truck and it didn't last 10-15 thousand miles. It was jerky and just annoying. I have seem several times where they just didn't last.
If it was not in a daily driver and it was more of a drag car or mud truck then the locker may be a better bet.
I like the LS much better for a street car. Much smoother operation.
I think 4.10 would be great with the 302 and autmatic overdrive. I wish my truck had that ratio, or at least 3.73. I have heard from a couple people that did it that the fuel economy went down with 4.10. So, from a mpg stand point the 3.73 is probably a better choice. It all comes down to what the truck is. Mine is a daily driver. If it was a weekend warrior or hot rod etc then the 4.10 would definitely go in.
With 3.73 the RPMs would probably be about 2200-2400 at 70. Its about 2000 at 70 with 3.55.
If it was not in a daily driver and it was more of a drag car or mud truck then the locker may be a better bet.
I like the LS much better for a street car. Much smoother operation.
I think 4.10 would be great with the 302 and autmatic overdrive. I wish my truck had that ratio, or at least 3.73. I have heard from a couple people that did it that the fuel economy went down with 4.10. So, from a mpg stand point the 3.73 is probably a better choice. It all comes down to what the truck is. Mine is a daily driver. If it was a weekend warrior or hot rod etc then the 4.10 would definitely go in.
With 3.73 the RPMs would probably be about 2200-2400 at 70. Its about 2000 at 70 with 3.55.
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Post Fiend
Joined: Jan 2007
Posts: 7,021
Likes: 5
From: Almost Heaven
Actually I don't like lockers. I had one in my previous truck and it didn't last 10-15 thousand miles. It was jerky and just annoying. I have seem several times where they just didn't last.
If it was not in a daily driver and it was more of a drag car or mud truck then the locker may be a better bet.
I like the LS much better for a street car. Much smoother operation.
I think 4.10 would be great with the 302 and autmatic overdrive. I wish my truck had that ratio, or at least 3.73. I have heard from a couple people that did it that the fuel economy went down with 4.10. So, from a mpg stand point the 3.73 is probably a better choice. It all comes down to what the truck is. Mine is a daily driver. If it was a weekend warrior or hot rod etc then the 4.10 would definitely go in.
With 3.73 the RPMs would probably be about 2200-2400 at 70. Its about 2000 at 70 with 3.55.
If it was not in a daily driver and it was more of a drag car or mud truck then the locker may be a better bet.
I like the LS much better for a street car. Much smoother operation.
I think 4.10 would be great with the 302 and autmatic overdrive. I wish my truck had that ratio, or at least 3.73. I have heard from a couple people that did it that the fuel economy went down with 4.10. So, from a mpg stand point the 3.73 is probably a better choice. It all comes down to what the truck is. Mine is a daily driver. If it was a weekend warrior or hot rod etc then the 4.10 would definitely go in.
With 3.73 the RPMs would probably be about 2200-2400 at 70. Its about 2000 at 70 with 3.55.
I agree with you also 3.73 would probably be best for a daily driver. I think 4.10's are just plain fun though. I'm wondering how much of a fuel mileage hit 4.10's can do to a 302?
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
Thats good to know. I may end up going to 4.10 at some point. I wonder if 3.73 would give better milage or not. With 3.55 I am currently getting 17 city/highway mix.
Hey Bill, The LS will throw 2 tails too! Its real fun in the wet.
Hey Bill, The LS will throw 2 tails too! Its real fun in the wet.
Postmaster
Joined: Jan 2009
Posts: 4,558
Likes: 2
...6cly Bill has 4.10s & a 300..... The lightning rear will have LS to ... Lew
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
I wish I had a Lightning rear end for mine.