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01-26-2003, 03:26 AM
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#1 |
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Registered User
Join Date: Dec 2002
Location: kelowna b.c. canada
Posts: 75
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Gear Ratio ??
  My 68 chevy 1/2 ton is going to be a nice driver. I plan on using a 350 with approx. 300 horses. I want good acceleration off the line, so what rearend gear ratio do you guys suggest, and what will it give me on the top end???
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'68 Chev C-10 '91 Western Star (workin wheels) Just an ole time truckin idiot! Jim G. |
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01-26-2003, 03:28 AM
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#2 |
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Registered User
Join Date: Dec 2002
Location: kelowna b.c. canada
Posts: 75
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I'm going to be running a turbo 350 for tranny.
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'68 Chev C-10 '91 Western Star (workin wheels) Just an ole time truckin idiot! Jim G. |
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01-26-2003, 03:36 AM
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#3 |
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Registered User
Join Date: Sep 2002
Location: Gilbert, AZ
Posts: 151
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Depending on what tire size you end up running, I would say a 3.23 - 3.31 is as low(geared) high(number) as your gonna want to go. You cant have the best of both worlds. I have 4.11's in my 68 right now and am gonna swap it out for a 3.08 here real quick. I spend most of my time on the freeway so the top end is way more important for me that the low end.
Good luck, Jason
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FGC |
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01-26-2003, 01:11 PM
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#4 |
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Registered User
Join Date: Oct 2002
Location: Des Moines WA. (Kent, area)
Posts: 668
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3.23 to 3.42 is about all i would go with the th350 not to radical just a good compramise as stated above.
Now if you want the adrenaline shakes  with an ear to ear grin go with somthing like a 4.56 possi and a 4speed auto.
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70 chev c10 swb fleet 72 grill, sb 400, 2/4 drop. 68 chev c10 swb fleet Early classic 4/6 drop with 4wheel disc brakes 9"rear 67-8 buckets tilt and A/C Classic GM Truck Club of Washington . Last edited by crazy4chevs; 01-26-2003 at 01:17 PM. |
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01-26-2003, 01:20 PM
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#5 |
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72 Cheyenne
Join Date: Oct 2001
Location: San Diego
Posts: 2,086
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I spend a little time on the Freeway so I went with 3.55, it puts me at about 3500RPM at 85MPH with 30" tires. I can still get off the line pretty good.
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01-26-2003, 01:22 PM
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#6 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Based on a 28" tall tire, 3.73 gears are a good all around gear. If you do more hyway driving, I go along with the other guys on that mid 3s gear. You will still have decent acceleration, but be able to cruise a little faster. as far as top speed, i have seen the 3.73s render the stock speedo totaly useless....crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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