454 tbi questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**66gmcguy** · 04-04-2022, 12:51 AM

Hello folks. I am contemplating swapping a 454 into one of my trucks, but I would like to run a factory TBI setup on it. My friend has several 454s he's willing to sell but I believe they are all from pre TBI trucks. If I bought one, could I just install a TBI intake, distributor, knock sensor ETC on it, or were the TBI engines different? The only real change in big blocks that I'm aware of is when they went to a 1 piece rear main seal in 1991. I am wondering if I bought an engine from something as old as maybe 1981, the TBI stuff will be a direct swap onto the engine. Thanks

04-04-2022, 12:51 AM	#1
66gmcguy Senior Member Join Date: Oct 2014 Location: Bay Area, CA Posts: 339	454 tbi questions Hello folks. I am contemplating swapping a 454 into one of my trucks, but I would like to run a factory TBI setup on it. My friend has several 454s he's willing to sell but I believe they are all from pre TBI trucks. If I bought one, could I just install a TBI intake, distributor, knock sensor ETC on it, or were the TBI engines different? The only real change in big blocks that I'm aware of is when they went to a 1 piece rear main seal in 1991. I am wondering if I bought an engine from something as old as maybe 1981, the TBI stuff will be a direct swap onto the engine. Thanks



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