The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Something ain't right

AtomicYJ · 06-06-2018, 05:51 PM

Richmond gear apparently makes 5.13s for the 12 Bolt. Tooth counts are 41-8. I think 4.10s with the NV4500 would be perfect. I have an '83 K-10 with 3.73s and an SM465 on 33s and it drives great at 70 mph. Doesn't like going much faster though.

Good luck!
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06-06-2018, 05:51 PM	#10
AtomicYJ Registered User Join Date: Feb 2010 Location: Richmond Hill, GA Posts: 64	Re: Something ain't right - new gears in rear end Richmond gear apparently makes 5.13s for the 12 Bolt. Tooth counts are 41-8. I think 4.10s with the NV4500 would be perfect. I have an '83 K-10 with 3.73s and an SM465 on 33s and it drives great at 70 mph. Doesn't like going much faster though. Good luck! Posted via Mobile Device Last edited by AtomicYJ; 06-06-2018 at 06:09 PM.