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03-14-2008, 01:12 AM
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#1 |
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67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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4 speed (SM465) swap?
I have a SM465 and a 250ci in my 68 c20 and i was wondering if it will bolt up to my 307 without a diferent bellhousing?
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03-14-2008, 01:15 AM
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#2 |
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Registered User
Join Date: Mar 2007
Location: Grundy Virginia
Posts: 385
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Re: 4 speed (SM465) swap?
pretty sure its the samething...
__________________
"OLE BLUE" Goodwrench 350, 5speed, Tilt, PS, PB, "some guys got into cars for money or girls but i got into cars because of the cars" -Jay Leno |
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03-14-2008, 01:16 AM
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#3 |
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Senior Member
 
Join Date: Apr 2001
Location: Alexandria, MN
Posts: 1,462
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Re: 4 speed (SM465) swap?
You wont need another bellhousing... bolt pattern on the 250 is the same as the 307.... straight six isnt a bad motor though I'd consider keeping it...
--Mike
__________________
63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's |
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03-14-2008, 08:13 PM
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#4 |
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Registered User
Join Date: Jun 2000
Location: Bismarck, ND
Posts: 4,282
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Re: 4 speed (SM465) swap?
You may need a different Clutch Z-Bracket too.
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Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club. |
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03-14-2008, 09:25 PM
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#5 |
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Senior Member
Join Date: Mar 2005
Location: weatherford,texas
Posts: 1,003
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Re: 4 speed (SM465) swap?
some of the bell housings with a 3-speed on them had a smaller hole where the input shaft collar went in. when i changed my 3-speed for a sm465 i also had to change the bellhousing for this reason.not all are this way, most do not need a bell housing swap.if you are using your current motor and not changing any of that,the z-bar & linkage will be the same. you will need a high/4speed trans tunnel in the floor board.if you do need a bellhousing the one from the 250 will work.
Last edited by lilred67; 03-14-2008 at 09:27 PM. Reason: more info. |
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