Help: Sm465 heavy duty upgrade - The 1947 - Present Chevrolet & GMC Truck Message Board Network

75chevycrewcab · 11-27-2015, 04:49 AM

So have a 75 Chevy crew cab that I plan on swapping a first gen Cummins into in the near future and I'd really like to use my sm465 that's already in my pickup. So I'm looking for any heavy duty upgrades I can do to it to be able to handle the torque, I plan on building the diesel up to around 800 ft-lbs and need to build the tranny up with heavy duty shafts and such. Any info anyone has on a transmission build or even my pickup build will be greatly appreciated. I have found other threads but they are all old so I'd like to make sure the info is still up to date. Also I will be getting a gear vendors over drive to bring down rpms a little.

Thanks for your time. Kodee

MTCK · 11-27-2015, 04:34 PM

Any reason to not just go with an NV4500 since you are going to spend the $$$ on a GVOD as that is a well documented and supported swap? Post up some truck pics.

75chevycrewcab · 11-27-2015, 09:49 PM

I want to do something different and I like the gear ratios of the sm 465. Its not letting upload from my phone, I'll keep trying.

11-27-2015, 04:49 AM	#1
75chevycrewcab Registered User Join Date: Nov 2015 Location: Big Bend, California Posts: 2	Help: Sm465 heavy duty upgrade So have a 75 Chevy crew cab that I plan on swapping a first gen Cummins into in the near future and I'd really like to use my sm465 that's already in my pickup. So I'm looking for any heavy duty upgrades I can do to it to be able to handle the torque, I plan on building the diesel up to around 800 ft-lbs and need to build the tranny up with heavy duty shafts and such. Any info anyone has on a transmission build or even my pickup build will be greatly appreciated. I have found other threads but they are all old so I'd like to make sure the info is still up to date. Also I will be getting a gear vendors over drive to bring down rpms a little. Thanks for your time. Kodee

11-27-2015, 04:34 PM	#2
MTCK Registered User Join Date: Dec 2009 Location: Fairbanks, AK Posts: 1,830	Re: Help: Sm465 heavy duty upgrade Any reason to not just go with an NV4500 since you are going to spend the $$$ on a GVOD as that is a well documented and supported swap? Post up some truck pics. __________________ -Marcus 1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's 1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow 2022 Silverado 3500 L8T Project Daily Driver Project Heavy Hauler Project Plow Truck

11-27-2015, 09:49 PM	#3
75chevycrewcab Registered User Join Date: Nov 2015 Location: Big Bend, California Posts: 2	Re: Help: Sm465 heavy duty upgrade I want to do something different and I like the gear ratios of the sm 465. Its not letting upload from my phone, I'll keep trying.



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