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#725823 - July 18th 2017 12:49 pm 1979 g30 with a 454 bbc?  
Joined: Jun 2017
Posts: 4
Kinger9 Offline
Kinger9  Offline

Joined: Jun 2017
Posts: 4
I have a g30 1979 class c motorhome that i have pulled the original 400 sbc from. I have a 454 bbc i would like to drop in. Unfortunatly, looking at the motors side by side and the very litte space i have to work under the hood, I do not think it will fit. As far as bolting up to the transmission and motor mounts, were all good there. Seems to me like the manifold will touch the frame and there will need to be definate cutting/grinding under the doghouse. Is the a smaller manifold/header that will clear the frame? I forgot how big this engine really is. Once I make some lifting mounts, I will have a better idea but ive measured many times and I dont think it will fit. I may be wrong but I do think the 454 was not an option this early in the application I have. I think somewhere around 83 maybe they became an option. Makes me wonder if they opened it up a bit. Has anyone had any experience with this swap? I need to make this thing fit. And will i need a bigger rad if I can make it fit? thanks. Any feedback at all is greatly appreciated.

#725824 - July 18th 2017 1:25 pm Re: 1979 g30 with a 454 bbc? [Re: Kinger9]  
Joined: Feb 2016
Posts: 78
Deathorvictory Offline
Deathorvictory  Offline

Joined: Feb 2016
Posts: 78
Los Angeles, CA USA
I believe '79 came with a factory 454 option so you should be able to fit it in there.

1973 Chevy G20 Long wheel base - Currently for sale in LA
1979 Dodge B200 Shorty

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