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10-07-2014, 11:03 AM
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#1 |
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Registered User
Join Date: Jun 2014
Location: Van island BC
Posts: 41
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68 GMC rearend
OK, I'm sure this has been covered in here somewhere but I'm gonna throw this out there anyways.
I have a 68 GMC c10. With a 307 that's been rebuilt, and the granny 4 SPD. I'm not sure about the gear ratio all I know is that when I'm going 65 mph its a little loud. If I push it to 75 the world is ending! It is the camper special with coil springs and posi track rear end. Does anyone wanna hazard a guess at the rear end. The 307 is also original. Its my daily driver so I would like to make it more highway friendly. I'm at work in camp for a few weeks now. So I'll pull the cover when I get home. Anyone have any suggestions as to what ratio I should have. |
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10-07-2014, 11:36 AM
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#2 |
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Registered User
Join Date: Jul 2013
Location: Sherman, Tx
Posts: 16
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Re: 68 GMC rearend
Mine would roar on the highway. I had pitting (rust) on my pinion bearings from sitting so long. After a rebuild, it is very quiet.
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10-07-2014, 12:10 PM
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#3 |
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Registered User
Join Date: Oct 2014
Location: Daphne, AL
Posts: 10
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Re: 68 GMC rearend
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10-07-2014, 01:12 PM
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#4 |
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Registered User
Join Date: Jun 2014
Location: Van island BC
Posts: 41
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Re: 68 GMC rearend
That helped ur revving? I'm doing like 2800 to 3000 rpms at 65 mph
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10-07-2014, 01:16 PM
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#5 |
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Registered User
Join Date: Jun 2014
Location: Van island BC
Posts: 41
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Re: 68 GMC rearend
Thanks for the info!
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