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07-31-2002, 06:15 PM
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#1 |
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Registered User
Join Date: May 2002
Location: Knoxville, TN USA
Posts: 189
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Rear Ratios
What are the available rear end ratios for a 69-70. This 4:11 is killing me on the trips. TF
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07-31-2002, 06:17 PM
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#2 |
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Registered User
Join Date: Feb 2001
Location: Ohio
Posts: 1,025
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3.07 ,3.73 ,4.11 and 4.56 and 5.13 in 3/4 ton and larger you could put a 3.73 ring and pinion or mabe even a 3.54? in your 4 series carrier if you wanted to or just swap the whole rear from another truck...
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07-31-2002, 07:10 PM
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#3 |
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Registered User
Join Date: Aug 2001
Location: escondido, ca 92026
Posts: 1,222
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3.07 will lower your rpms for hiway driving, but you'll sacrifice power and acceleration off the line... it's hard to have your cake and eat it too, unless you get an overdrive trans and keep the 4.11s....
__________________
'72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project |
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07-31-2002, 07:36 PM
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#4 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,402
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For a good compomise, I ran a set of 3.40 gears(75 12 bolt), & a saginaw 4 spd from a monza(3.50 first gear). a tire smoker on take off, & would cruise 3000 rpms @ 70 mph. the only drawback is those saginaws arent real stout.......I got 25000 mi on that on before a 6500 rpm shift to 3rd made shrapnel out of it!
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