5.3L with a th350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

6D8_C10 · 12-28-2009, 05:49 PM

Hey Everyone,

I am trying to get a list together for my 5.3L swap.
I have read the different posts and I have found good info.

I saw in some of the posts where adapters are used for motor mounts to put the engine in our trucks.
I also read where either a flexplate extentions are used to match up the older transmissions to the LSx engines.
Or, you can use the special made Torque Converters for the LSx and the other transmissions.

So, with the adapter options above will there be any other mods needed to connect the LSx motor to an older Trans in an older Truck?

12-28-2009, 05:49 PM	#1
6D8_C10 Registered User Join Date: Dec 2009 Location: Saint Peters, MO Posts: 171	5.3L with a th350 Hey Everyone, I am trying to get a list together for my 5.3L swap. I have read the different posts and I have found good info. I saw in some of the posts where adapters are used for motor mounts to put the engine in our trucks. I also read where either a flexplate extentions are used to match up the older transmissions to the LSx engines. Or, you can use the special made Torque Converters for the LSx and the other transmissions. So, with the adapter options above will there be any other mods needed to connect the LSx motor to an older Trans in an older Truck? __________________ 68 c10 350/th350 winter daily driver 90 Nissan 180sx, sr20det gt2871r turbo, track car,summer daily driver "Just so we are reminded of those who are held back, Up front there ought to be a Man in Black". Johnny Cash.

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