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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Irish_Alley on January 13, 2017, 12:02:27 am

Title: might be getting a NP440/np833 but have questions
Post by: Irish_Alley on January 13, 2017, 12:02:27 am: this one is a 4x4 with a 208 (cast iron). im reading on Diesel hub (http://www.dieselhub.com/trans/np440.html) that the max input Tq is only 270Ft. i didnt think it would out perform the sm465 but the OD i what im after. but has anyone really pushed these things? ive heard that mopar used them and they handled the power from a big block and the "power" from the 6.2. im wanting to get my 84 on the road its a k30 srw, i have a few 350s sitting and i think im going to use the one from my crew cab since its a tbi.

but my main thing is who has used and worked with them? could you haul a car trailer?
Title: Re: might be getting a NP440/np833 but have questions
Post by: Captain Swampy on January 16, 2017, 04:10:14 pm: They've pulled lots of hay wagons and chopper boxes on farms. I don't remember 208's having reliability problems. Shock load is what breaks drivetrains. They'll tolerate a lot of torque if it's applied smoothly, generally speaking. I'm far from an expert on them though.
Title: Re: might be getting a NP440/np833 but have questions
Post by: Irish_Alley on January 16, 2017, 04:41:21 pm: i was going to pay 400 for the setup. then come to find out it doesnt have a bell housing. and thats a deal breaker for me, the guy thought you can use a sm465 bell housing. so im passing this one up unless it only cost 100
Title: Re: might be getting a NP440/np833 but have questions
Post by: zieg85 on January 16, 2017, 05:39:54 pm: The 4 speed OD had 2 bell housing configurations and most of the 83 on up bell housing was dual pattern
Title: Re: might be getting a NP440/np833 but have questions
Post by: Irish_Alley on January 16, 2017, 08:10:48 pm: this is it
Title: Re: might be getting a NP440/np833 but have questions
Post by: zieg85 on January 16, 2017, 08:18:33 pm: Dime a dozen, I see them on CL for a lot less

http://www.ebay.com/itm/1985-1987-Chevy-GMC-SM465-Square-Body-Truck-Hydraulic-Bell-Housing-/192061826367?hash=item2cb7c6e53f:g:0LUAAOSw241YVYhx&vxp=mtr
Title: Re: might be getting a NP440/np833 but have questions
Post by: zieg85 on January 16, 2017, 08:19:43 pm: another
http://www.ebay.com/itm/1980-1985-GM-Chevy-V8-Truck-Aluminum-Bell-Housing-WITH-CLUTCH-BALL-OEM-/152381794575?hash=item237aa9a90f:g:4E4AAOSw-FZXkVya&vxp=mtr
Title: Re: might be getting a NP440/np833 but have questions
Post by: Irish_Alley on January 21, 2017, 03:25:05 pm: why do these sm465 bell housings look different than just the single pattern ones with only 4 holes?