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06-26-2010, 09:40 AM
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#1 |
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Who's got steelies?
 
Join Date: Feb 2006
Location: Morrison, Oklahoma
Posts: 1,025
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SBC to Inline swap?
I've been contemplating this. What all is involved? I have automatic trans, will it need to be moved back to put an inline in the stock location?
What else do I need to know?
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 1969 C10 LWB W/ 250 I6 & 3spd1970 C10 with '67 small window cab, 68 front end, blue; 305/TH350, 3.08 limited slip rear end, manual brakes, power steering; & 4-wheel drums-My daily driver.1975 Chevelle Malibu Classic Coupe 350/th350 mint green1970 C20 Suburban 350/700R4 4.10 gearing green & white 1978 Big 10 Silverado 350/th350, working ac, 2 tone blue-My summer daily driver 1983 GMC 1500 Sierra 305/SM465 2.73 rear end How to add a trip odometer to your 67-72 stock speedometer How to rebuild your Q-Jet My Truck Page My Youtube Channel |
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06-26-2010, 10:44 AM
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#2 |
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Registered User
Join Date: May 2006
Location: Jonesboro, AR
Posts: 916
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Re: SBC to Inline swap?
Yes it will have to be moved.
You may have already thought of some of these: Shorter driveline. You may not be able to use the V8 fan shroud. The shift linkage may need to be extended to reach back further. Transmission cooler lines extended. New motor towers. Exhaust mods. May need to modify the wiring harness to reach new sending unit location. Depending on whether you have PS and AC you may need new hoses and brackets too. |
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06-27-2010, 10:26 PM
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#3 |
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Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: SBC to Inline swap?
Factory 6 and V-8 engines are mounted in the same location. GM has better things to do than make two different sets of throttle, shift and clutch linkages, driveshafts, oil cooler lines, etc. My truck was changed from a 6 to a V-8 by a PO and the bellhousing is still in the same place where the General put it.
Still not convinced? http://www.persh.org/pickup/perches.htm Ray |
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06-28-2010, 09:45 AM
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#4 |
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Registered User
Join Date: May 2006
Location: Jonesboro, AR
Posts: 916
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Re: SBC to Inline swap?
I think 4WD is the only one that have 6 and 8 in the same mount location.
I own a 70 GMC that is mounted in the front holes. I also own a 71 chevy that came with a 6 that mounted in the rear holes. I also have swapped to a V8 using the original I6 mounts. It was a standard and moving the bellhousing was out of the question. |
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06-28-2010, 09:54 AM
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#5 |
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Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: SBC to Inline swap?
It is true that the wholes on the frame are different for the 6 and 8, but that is because of different lengths of the engines I think.
Now the bell housings/transmissions maybe in the same location for both I am thinking. Hopefully someone will chime in that has done the swap.
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'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. |
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06-28-2010, 09:57 AM
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#6 |
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Senior Member
Join Date: Oct 2001
Location: Lancaster S.C.
Posts: 4,764
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Re: SBC to Inline swap?
Cant say about a 4x4 cause I've only had 2 of them and they were V8s.
However I've had 52 trucks and I can say that V8 and V6 are in different locations. Holes are stamped in the frame for this difference.
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