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Old 12-03-2014, 05:12 PM   #1
mrolds88
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Re: Factory mounts to put SBC into 77 C65?

Why not reuse the horseshoe you have? Weld the stock holes up and redrill the small block pattern. Did the sme basic thing on my 59.
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77 GMC C3500 CC dually Sold
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87 K10 Suburban Sold
93 K2500 xcab 6.5TD
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Old 12-03-2014, 06:54 PM   #2
67JimmyMO
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Re: Factory mounts to put SBC into 77 C65?

Quote:
Originally Posted by mrolds88 View Post
Why not reuse the horseshoe you have? Weld the stock holes up and redrill the small block pattern. Did the sme basic thing on my 59.
Thanks for your thoughts, mrolds88. From my measurements it looks like a SBC is about 3" shorter from where it bolts to the bellhousing, to the front face of the block where the horseshoe would bolt up.

So, even if I could reuse the existing horseshoe, I would still have to figure out how to move it 3" towards the rear of the truck. Was hoping there was a factory SBC horseshoe mount that would sit on the existing rubber pads on the front crossmember, and "extend" the 3" to reach a small block. I may be dreaming though.

I have been doing some research and it looks like the C60s had SBCs, and the C65s had the 366 big block.

Does anyone have pics of the mounts with a SBC in a late-70s C60?

Was wondering if the SBC mount was a horseshoe-type that bolts to the front face of the motor...or is it mounts that come off the side of the block and bolt to the frame rails?
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1967 GMC SWB 383 Stroker w/Saginaw 4sp
1979 Chev C30 Scottsdale Flatbed 350 4sp
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1978 GMC 6500 Flatbed Dump 366 5sp + 2sp
1965 Chev K10 LWB 230 4sp
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Old 12-03-2014, 11:04 PM   #3
mrolds88
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Re: Factory mounts to put SBC into 77 C65?

Ok understand. The 59 had a 348 in it and they must be a bit shorter front to back than the big blocks. Actually C40's and C50s should also have the same small block horseshoes that you are looking for. Heck even the earlier trucks might work too.
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72 GMC C2500 402/Th400 first truck (still have)
77 GMC C3500 CC dually Sold
70 C50 dump truck "Rusty"
87 K10 Suburban Sold
93 K2500 xcab 6.5TD
96 GMC K2500 Suburban 6.5 TD
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Old 12-04-2014, 09:09 AM   #4
67JimmyMO
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Re: Factory mounts to put SBC into 77 C65?

Quote:
Originally Posted by mrolds88 View Post
Ok understand. The 59 had a 348 in it and they must be a bit shorter front to back than the big blocks. Actually C40's and C50s should also have the same small block horseshoes that you are looking for. Heck even the earlier trucks might work too.
I am searching for local C40-50-60 trucks to look at, don't know anyone personally with one but I will find one sooner or later, thx.
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1967 GMC SWB 383 Stroker w/Saginaw 4sp
1979 Chev C30 Scottsdale Flatbed 350 4sp
2000 Chev 3500 Flatbed 454 Automatic
1978 GMC 6500 Flatbed Dump 366 5sp + 2sp
1965 Chev K10 LWB 230 4sp
1985 Chev K30 Flatbed 350 4sp
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