305 to 454 swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BBC Chevy Man · 07-12-2010, 01:38 AM

Hello everyone, I'm new to the forum. Been lurking around for awhile as a guest and I must say this is one of my favorite sites for the square body trucks.

Anyways, I have a 1979 GMC 1/2 ton 2wd with the old and slowly getting tired 305 in it and I am wanting to do a 454 swap into this truck. This will be my first engine swap in a square body and I am wondering if this is going to be a direct bolt in, or will I have to modify the engine mounts to put this engine in? Also will the old Turbo 350 tranny be a good transmission for this swap?

Thanks,
BBC Chevy Man

07-12-2010, 01:38 AM	#1
BBC Chevy Man Registered User Join Date: Jul 2010 Location: Alberta Canada Posts: 14	305 to 454 swap Hello everyone, I'm new to the forum. Been lurking around for awhile as a guest and I must say this is one of my favorite sites for the square body trucks. Anyways, I have a 1979 GMC 1/2 ton 2wd with the old and slowly getting tired 305 in it and I am wanting to do a 454 swap into this truck. This will be my first engine swap in a square body and I am wondering if this is going to be a direct bolt in, or will I have to modify the engine mounts to put this engine in? Also will the old Turbo 350 tranny be a good transmission for this swap? Thanks, BBC Chevy Man

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