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

ullose272 · 02-27-2026, 05:28 PM

https://youtu.be/Y4gQ27bl1-U?si=ZB3-DzibfBed-Y4l

1 3/4 will be fine, most your LS stuff is 1 3/4 or bigger. 1 5/8 has just been a thing for so long that its what people know and trust. Something around 500 hp 1 3/4 is a good size

02-27-2026, 05:28 PM	#7
ullose272 Registered User Join Date: May 2011 Location: Boise, ID Posts: 95	Re: 1 3/4 headers https://youtu.be/Y4gQ27bl1-U?si=ZB3-DzibfBed-Y4l 1 3/4 will be fine, most your LS stuff is 1 3/4 or bigger. 1 5/8 has just been a thing for so long that its what people know and trust. Something around 500 hp 1 3/4 is a good size