Switching to 1.7 roller rockers
Senior Member
Joined: Nov 2002
Posts: 133
Likes: 0
From: Cocoa, FL
Hey dvldog458,
I have the Cobra 1.7's (they are made by Crane, says so right on the rocker) and have the motorsport valve covers and everything fits fine. I even put the stock covers on just for the heck of it and they clear too. Seeing is believing, here's a link to my pics:
http://www.f150online.com/galleries/...0063&anum=3496
http://www.f150online.com/galleries/...7726&anum=3496
BTW, the diecast rockers are bigger than the extruded ones because they have to be for strength. Extrusions are stronger than castings; hence the extruded rockers can be more compact.
Unless you are going to have enormous spring loads and rev over 7000rpm, I can't see spending the extra jack for the extruded pieces, the cobra 1.7's are a great deal.
I have the Cobra 1.7's (they are made by Crane, says so right on the rocker) and have the motorsport valve covers and everything fits fine. I even put the stock covers on just for the heck of it and they clear too. Seeing is believing, here's a link to my pics:
http://www.f150online.com/galleries/...0063&anum=3496
http://www.f150online.com/galleries/...7726&anum=3496
BTW, the diecast rockers are bigger than the extruded ones because they have to be for strength. Extrusions are stronger than castings; hence the extruded rockers can be more compact.
Unless you are going to have enormous spring loads and rev over 7000rpm, I can't see spending the extra jack for the extruded pieces, the cobra 1.7's are a great deal.