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02-06-2012, 09:53 PM
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#1 |
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Registered User
Join Date: Jan 2010
Location: Tuckerton, New Jersey
Posts: 36
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Gear ratio help
I know this has been talked about alot but i cant find a good answer. I would like to know what gear ration i should put in my 70' c-10 with a 12bolt posi. I want low end torque but i also want to cruise on the parkway nicely. Some info on the truck, it has a 350 bored .30 over, 2.02 iron heads, comp thumper cam, edelbrock performer, and a 600cfm carb. The trany is a stock turbo 350. My gear ration right now is 4.10.
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02-06-2012, 10:01 PM
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#2 |
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Registered User
Join Date: Jan 2011
Location: Lynn Haven Florida
Posts: 1,019
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Re: Gear ratio help
i would go 3:73 or 3:42, 3:73 will be good for getting of the line but kinda tough on cruising the parkway, so 3:42 should be a better fit. but either one will be better than 4:10's
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02-06-2012, 10:05 PM
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#3 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,715
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Re: Gear ratio help
Personally, I'd leave what you have and get a TH700R4 or, even better IMO, a TH200 4R
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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02-06-2012, 10:59 PM
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#4 |
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Registered User
Join Date: Jan 2010
Location: Tuckerton, New Jersey
Posts: 36
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Re: Gear ratio help
yea i was thinking 3.73 or somewhere along that line. And i was also thinking about leaving it. I have a 700r4 laying in my garage that im not sure about because i here they break easily. What are your opinions on the 700r4 and what do you think my top speed would be with the 700r4 with 3.73 and a 29 inch tire?
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02-06-2012, 11:22 PM
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#5 |
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Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,452
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Re: Gear ratio help
373 is what the factory used with the 7004r most of the time
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California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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02-06-2012, 11:42 PM
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#6 |
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Registered User
Join Date: Jul 2011
Location: vacaville ca
Posts: 1,304
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Re: Gear ratio help
my mods are similar to what you have and I run 3.73. Great in town and off the line but freeway is a little harsh.... once I get my 700r4 in I think it will be a perfect fit
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04 CHEVY LLY LS DURAMAX 4WD. MODS TO FOLLOW, EFI LIVE, BUILT TRANS, LBZ MP, LIFT PUMP SOLD 1972 chevy c10 |
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