3 valve
Member
Joined: Dec 1999
Posts: 18
Likes: 0
From: Iowa City,IA USA
Trying to sprint with 6000 lbs on your back..
holding a 4x8 sheet of plywood up in front of you. Thats how our 2v 5.4 Exp with Vortec/Superchip feels until about 3000 rpm. I can't imagine that a 4v Navigator feels much different.