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what do you think

 
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71chevy
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Joined: 07 Aug 2006
Posts: 22

792.98 points



PostPosted: Fri May 04, 2007 2:24 pm    Post subject: what do you think Reply with quote

Hey guys need your help! I have a 71 chevy c10 short wheel base. I am getting ready to install a 2005 5.3 L/4 L 60 E combo that has only 10 miles. My question is this, I currently have 3.08 rear gears and I am concerned if this will be o.k. The gears are < than a yr. old so I would like to keep if possible. The truck will be used for freeway, interstate use and occasionally pulling my ski boat. What do you guys think---Let's hear it......
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Big Dave
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Joined: 04 Dec 2005
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Location: Tampa Florida
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PostPosted: Fri May 04, 2007 3:13 pm    Post subject: Reply with quote

Not ideal for towing but a good street gear with a V-8. Towing package generally shipped with a 3.23 or 3.55 so you are not far off, and the 3.07 was the gear put in the back of cop cars for high speed pursuit driving so you should be on par with your local State Trooper (of course he still has his radio).

Big Dave
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71chevy
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Posts: 22

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PostPosted: Fri May 04, 2007 3:37 pm    Post subject: Reply with quote

I think I'll give it a whirl...guess I can always go back to a 3.42 or 3.73!
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jonny_b
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Joined: 28 May 2003
Posts: 175
Location: Rogers, MN
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1979 Chevrolet Camaro

PostPosted: Sat May 05, 2007 7:35 am    Post subject: Reply with quote

As Dave said it is great for the street, should help get better milage. As far as towing your boat, it will work just fine, the 5.3L puts out plenty of power. The only thing that will happen different between having a 3.07 or a 3.42+ will be more converter slip, so if you are going to tow your boat on a long trip, up mountains and such you may want to be sure to have a good trans cooler, or at least a gauge so you can monitor its temp.
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1979 Camaro Z28
355 cu.in. 5-speed man.
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96capriceMGR
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Joined: 23 Aug 2003
Posts: 814
Location: New London Wisconsin
20327.88 points


1996 Chevrolet Caprice

PostPosted: Sat May 05, 2007 9:02 am    Post subject: Reply with quote

The deep first of that tranny will allow those gears to work fine. Often overlooked benifit of the 700/5l60 line of trannies is the 3.06 first gear compared to the 2.48 of say a TH400 and other 3-speeds are similar.

Does make for a big rpm drop on the 1-2 shift but a nice stall takes care of that and the lockup makes even a 3000+ stall daily drivable to almost everyone.
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