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07-28-2011, 11:10 PM
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#1 |
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Registered User
Join Date: Jul 2007
Location: Wylie
Posts: 33
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recommend Gears ratio
Got a 56 3200,
350 engine 400 tranny Normal day to day driving. currently has the stock gears. what gear ration do you recommend? and where can I get some replacement gears? are the 80's model trucks rear ends close to the same width? Thanks
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Take Care, Dave |
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07-28-2011, 11:20 PM
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#2 |
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Registered User
Join Date: Jun 2011
Location: GA
Posts: 281
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Re: recommend Gears ratio
I have 3.08 gears and they are alright, still would like something better for the highway.
How do plan to use your truck?Is racing important, much highway driving? |
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07-28-2011, 11:51 PM
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#3 |
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Registered User
Join Date: Aug 2010
Location: Jennings, OK
Posts: 321
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Re: recommend Gears ratio
I'm running a second gen camaro rear that has 2.73 gears.
350/350 combo and gets around 15 mpg. I used it as a daily driver and to tow a medium sizde trailer every now and then.
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Somehow, the idiots survive despite their best efforts to kill themselves. - dcozzi |
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07-29-2011, 11:37 PM
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#4 |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: recommend Gears ratio
I have tried them all and my favorite is a 3:55, unless you want to get there quicker but run out of breath faster use a 4:11 !!
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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07-31-2011, 12:34 AM
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#5 |
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Registered User
Join Date: Jul 2011
Location: Moorpark, California
Posts: 159
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Re: recommend Gears ratio
Your gear selection is going to depend on your tire size and how much you want your RPM's to be. You can go online and find a gear/tire/speed calculator that you can play with. You can imput tire size and gear ratios and it will tell you the RPM's at different speeds. If you cruise the freeways 3.70 is probably a good bet. If you travel surface streets mostly then try some 4.11s. I have a Pro Street truck with a 400 trans and 4.56 gears with 31 inch tall tires that stays on the surface streets. Try that calculator and see what you like.
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07-31-2011, 01:22 PM
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#6 |
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Registered User
 Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,203
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Re: recommend Gears ratio
You cerently have 3.90 ratio. You can buy replacement gears in a 3.38 ratio. I understand they use 80's 4X4 rear ends to keep the 6 bolt bolt patern. A good way to go would be a 700R4 o-drive trans.
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08-01-2011, 09:49 PM
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#7 |
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Registered User
Join Date: Jul 2010
Location: Tucson Arizona
Posts: 165
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Re: recommend Gears ratio
If your normal driving includes any highway speeds, you want 3.00 or steeper. Even with a tall tire, 3.55 may be too low for you.
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