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Old 04-02-2016, 09:32 AM   #1
dennislbrooks
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42 rear diff change --s10 frame

I am running a 350 sbc with a 700r4 with lockup and had a 3.08 gear in it. When the OD kicks in at 50 mph rpms would drop to about 1200 so I changed the whole rear diff to a 3.73 out of a 92 4 wd pickup.
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Old 04-04-2016, 01:32 PM   #2
NEWFISHER
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Re: 42 rear diff change --s10 frame

I have found that 3:73 is the perfect ratio when doing a 700r4 or 2004r swap.
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Old 04-04-2016, 04:00 PM   #3
dennislbrooks
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Re: 42 rear diff change --s10 frame

cool
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Old 04-05-2016, 07:25 AM   #4
Diesel46
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Re: 42 rear diff change --s10 frame

A 3:73 swap is a great choice especially if your SBC has a performance cam that has very little torque at low RPMs. Looks good!
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Old 04-05-2016, 08:04 AM   #5
dennislbrooks
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Re: 42 rear diff change --s10 frame

The 350 sbc is a GM crate engine 8.5 compression with a 268 Comp Cam, Edelbrock 600, and the s10 conversion headers with 2 1/4 exhaust with and H pipe.
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