79 century swap

Tberstler4

Not-quite-so-new-guy
May 31, 2022
8
3
My century has a 301 v8 and I’m going to put in a sbc350 and turbo 350 trans. I know I need different motor mounts but besides that should it be a pretty direct swap?
 

PBGBodyFan

G-Body Guru
Mar 3, 2009
727
93
Wisconsin
Not sure if the trans cross-member would be different, even if you have the THM-200 now I think the crossmembers are the same. Other things to figure out of course are the exhaust and fuel lines that surely will need to changing or replacing going from the 301 to SBC.
 

CoachFoust

Not-quite-so-new-guy
Jul 8, 2015
47
18
Nebraska City, Ne
My century has a 301 v8 and I’m going to put in a sbc350 and turbo 350 trans. I know I need different motor mounts but besides that should it be a pretty direct swap?
I would be interested in your engine side motor mounts if you wanted to let them go. I’m putting a Pontiac 400 in my 86 Grand Prix and they are the key to make it all happen. I’ll try to send you a PM as well.
 

Tberstler4

Not-quite-so-new-guy
Thread starter
May 31, 2022
8
3
Not sure if the trans cross-member would be different, even if you have the THM-200 now I think the crossmembers are the same. Other things to figure out of course are the exhaust and fuel lines that surely will need to changing or replacing going from the 301 to SBC.
Will the stock fuel pump and lines work for a mostly stock sbc?
 

PBGBodyFan

G-Body Guru
Mar 3, 2009
727
93
Wisconsin
Will the stock fuel pump and lines work for a mostly stock sbc?


I’m not familiar with where/how the 301 fuel lines are run, maybe someone here can chime in. When converting from a 3.8 Buick to SBC I kept the stock feed line and connected proper fuel hose and some aluminum hard line I could bend to run on the frame to the fuel pump. I would think whatever lines were on the car you can probably do the same, with low pressure (non EFI) pumps I think there is more allowance.

Also wouldn’t think a 301 pump interchanges with a sbc if that’s what you mean. For how cheap new pumps are I would suggest that they even if it does fit, a stock application mechanical pump will support a mild motor and then some.
 
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