Early SM465 into Late square body - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JIMs70GMC** · 08-12-2014, 01:43 PM

I have an 465/205 combo from a 71 I want to install into my 86 K5. I have collected what i consider all the parts. I notice the hydro clutch bell housing bolts to the tranny slightly different than the 71 manual bell housing. On the new hydro bell housing the bell housing has 4 threaded holes, on the early manual housing 2 holes are threaded and 2 holes on the 465 are threaded. Which ones should I drill out to make this work? I can get some pics later today/evening. Thanks,

Jim

**kwmech** · 08-12-2014, 05:44 PM

You will have to drill out the lower bolt holes and then grind the casting flat so the head of the bolt will sit flat and so you can turn the head of the bolt with either a socket or wrench

**JIMs70GMC** · 08-14-2014, 11:54 AM

Quote:

Originally Posted by kwmech

You will have to drill out the lower bolt holes and then grind the casting flat so the head of the bolt will sit flat and so you can turn the head of the bolt with wither a socket or wrench

You do mean drill out the lower aluminum bell housing holes and bolt to the tranny?

**kwmech** · 08-14-2014, 07:17 PM

Quote:

Originally Posted by JIMs70GMC

You do mean drill out the lower aluminum bell housing holes and bolt to the tranny?

No, the transmission

72'Bourbon · 08-15-2014, 09:45 AM

Quote:

Originally Posted by kwmech

You will have to drill out the lower bolt holes and then grind the casting flat so the head of the bolt will sit flat and so you can turn the head of the bolt with either a socket or wrench

I am just starting this same project. Hadn't even thought to check the bell housing to trans

Thanks for the info.

JIM, I'm doing a late 70's 465/205 into an '85 Crew; if you have any trouble finding any parts or come across any issues that I should probably know before I start, let me know. I ordered all the necessities yesterday.

**JIMs70GMC** · 08-15-2014, 02:24 PM

Quote:

Originally Posted by kwmech

No, the transmission

Thanks.

"JIM, I'm doing a late 70's 465/205 into an '85 Crew; if you have any trouble finding any parts or come across any issues that I should probably know before I start, let me know. I ordered all the necessities yesterday."

I sure will. I think I will do a little write up.

08-12-2014, 01:43 PM	#1
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Early SM465 into Late square body I have an 465/205 combo from a 71 I want to install into my 86 K5. I have collected what i consider all the parts. I notice the hydro clutch bell housing bolts to the tranny slightly different than the 71 manual bell housing. On the new hydro bell housing the bell housing has 4 threaded holes, on the early manual housing 2 holes are threaded and 2 holes on the 465 are threaded. Which ones should I drill out to make this work? I can get some pics later today/evening. Thanks, Jim __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

08-12-2014, 05:44 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,571	Re: Early SM465 into Late square body You will have to drill out the lower bolt holes and then grind the casting flat so the head of the bolt will sit flat and so you can turn the head of the bolt with either a socket or wrench Last edited by kwmech; 08-14-2014 at 07:17 PM.



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