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07-23-2005, 11:27 AM
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#1 |
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Registered User
Join Date: May 2003
Location: Montgomery, TX
Posts: 190
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Rear Diff Gear Ratio
I am going to have my 9" built in about a week. Wanted to ask you guys/gals what gear you recommend. The shop that is building it said to go with 3.50 but I was originally going to go with 3.73. I am running 295/40/20 tires on the rear. My tranny is a built TH350 with 3200 stall. Motor is a strong BB402. I want it to be streetable but able to post a good time at the track also. Any comments/suggestions would be great. What will the RPM be at 60 MPH with different ratios?
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1984 C10 SWB Custom Frame Blow Through Carb Single Turbo Hope to be on the road by Summer 2018 1967 C10 CST LWB 327/PG Original Running Driving Future Project |
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07-23-2005, 11:57 AM
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#2 |
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needin' money
Join Date: May 2005
Location: Chickasha, Oklahoma
Posts: 1,106
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i say go with the 3.73's, here is a website i think you can find some of the things on what rpm would be at 60, the website is www.4lo.com
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SWB Stands for Short Wide Bed |
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07-23-2005, 01:33 PM
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#3 |
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paper or plastic?
Join Date: Nov 2002
Location: SW Missouri
Posts: 671
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Go with the 3:50's. IF you a have a "built" Bigblock you wont need a low gear to get movin' and you will still have a good hiway RPM
I'm using 3.42's (12 bolt rear) in my 468 BBC with a th400. I have not got it done yet but should be about the right gear for playing and driving.
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1967 Chevy SWB 250 http://67-72chevytrucks.com/vboard/s...d.php?t=442157 1977 Chevy SWB 454 No More 454 getting 5.3 http://67-72chevytrucks.com/vboard/s...d.php?t=310518 1977 Stepside Truck of the month winner http://67-72chevytrucks.com/vboard/s...d.php?t=135524 1965 Chevy C10 454 http://67-72chevytrucks.com/vboard/s...d.php?t=731372 1975 Dodge Power Wagon http://67-72chevytrucks.com/vboard/s...=1#post7871388 |
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