Reviewed By jonathan j (Metairie, LA) Reviewed for a 2001 GMC Sierra —6/21/2008 4:06 AM
Sounds great on my 01 sierra. really opens it up for some more power.
Reviewed By Brad S (Franklin, OH) Reviewed for a 2001 GMC Sierra —11/27/2006 8:39 PM
These headers really helped wake up the bottom end of my truck. Construction and finish are excellent. These are probably the best header out there for a 4x4 truck that needs all the low end torque they can get. The 310Y is a long tube headers and gives you the best power band, better than the newer midlength model.
Reviewed By Bill B (New Hartford, NY) Reviewed for a 2015 GMC Sierra —11/17/2016 3:59 AM
These just added the snap I was looking for from the accelerator you can here and feel the difference in the motor. I partnered this with a K&N 77 series intake and Borla touring exhaust and it brought the 6.2 alive. Better power great sound and picked up 1.5 mpg.