99-01 Silverado are great trucks

[1971 GMC SHORTY]

Originally Posted by EVRLET

You are correct, R = 5.7. However, that’s a Gen II SBC for the GMT400 platform. It’s not an LS based engine. LS1 was the only 5.7 LS based engine, but they never offered them in a truck. The OP has a 2001 Silverado, which is on the GMT800 platform, which is is why I said let’s talk about it. I was hoping he had a unicorn…lol

I Wish it Had a LS Probably Would’ve Got Better Fuel Economy! But She’d Pull A House