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Joyridin · 02-02-2022, 04:42 PM

Up to 2018, the Gen 5 computers are still workable. After 2018, GM changed the security and it gets hairy. Yes, you can get those HP numbers out of a 5.3, but don't forget that is a bare engine with no accessories and an electric water pump. I have no info on the Holley. Will they run the DI engine with a DBW pedal?

I am putting the 220 cam he tested in my 5.3 Gen 5 now. I don't have the MSD intake and really don't plan on buying it. I am not that wrapped up in getting every drop out of the engine.

As for the 4.3, I have nothing on that. I don't see why you couldn't have it reground if you can find somebody to do it. The only issue might be lifter travel as you might be out of the travel zone if they ground too much. I am guessing they use the plastic trays to hold the lifters from turning like the V-8 engines.

02-02-2022, 04:42 PM	#2
Joyridin Registered User Join Date: Sep 2020 Location: Cleveland, Ohio Posts: 488	Re: Gen V engines Up to 2018, the Gen 5 computers are still workable. After 2018, GM changed the security and it gets hairy. Yes, you can get those HP numbers out of a 5.3, but don't forget that is a bare engine with no accessories and an electric water pump. I have no info on the Holley. Will they run the DI engine with a DBW pedal? I am putting the 220 cam he tested in my 5.3 Gen 5 now. I don't have the MSD intake and really don't plan on buying it. I am not that wrapped up in getting every drop out of the engine. As for the 4.3, I have nothing on that. I don't see why you couldn't have it reground if you can find somebody to do it. The only issue might be lifter travel as you might be out of the travel zone if they ground too much. I am guessing they use the plastic trays to hold the lifters from turning like the V-8 engines.