The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Doing LS Swap

**biketopia** · 07-08-2021, 08:37 AM

You have a 5.3, see here. https://sites.google.com/site/sloppy...a-4-8-or-a-5-3

Your tuner should be able to flash in anything he want's. The 4.8 and 5.3 use the same ECM, just the tune is different. I would verify your injector part # and give him that info and just let him flash in a 5.3 tune with a little more timing and turn off security and the rear 02's and go for it.

07-08-2021, 08:37 AM	#249
biketopia Senior Member Join Date: Jul 2015 Location: Warrenton VA Posts: 1,009	Re: Doing LS Swap - I have no idea what I'm doing! You have a 5.3, see here. https://sites.google.com/site/sloppy...a-4-8-or-a-5-3 Your tuner should be able to flash in anything he want's. The 4.8 and 5.3 use the same ECM, just the tune is different. I would verify your injector part # and give him that info and just let him flash in a 5.3 tune with a little more timing and turn off security and the rear 02's and go for it. __________________ 71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350