1.7 Crane Roller rocker question
Thread Starter
Staging Lane
Joined: Jun 2004
Posts: 51
Likes: 0
1.7 Crane Roller rocker question I just installed these roller rockers. I also put in a different cam with 212/221 @.050 duration, .510/.510 lift and 114 LSA. The rockers came with 7.250 pushrods and I also have a new set Comp Cam 7.410 pushrods. Which ones should I use? I'm thinking the 7.250's are going to take away some cam arent they? And this is on a 5.3 Silverado, nobody would post in the truck section.
5.3 Whipplecharged @8lbs, Westers Whipple tune, BBK 80mm, 42lb injectors, 212/221 @.050 .510/.510 114 LSA, 1.7 roller rockers, Thorley Tri-Y headers, Magnecore Thundervolt wires, NGK TR6's, LT1 Efans, K&N cold air, Walbro inline pump,
These are all the engine mods. Also, how much power should this thing be producing?
5.3 Whipplecharged @8lbs, Westers Whipple tune, BBK 80mm, 42lb injectors, 212/221 @.050 .510/.510 114 LSA, 1.7 roller rockers, Thorley Tri-Y headers, Magnecore Thundervolt wires, NGK TR6's, LT1 Efans, K&N cold air, Walbro inline pump,
These are all the engine mods. Also, how much power should this thing be producing?
On The Tree
Joined: Aug 2003
Posts: 100
Likes: 0
From: Arlington, Tx
The push rods that come with the crane rockers are made specifically for them. Something about the geometry of the rocker since it is a variable ratio, etc... So they shouldn't take anything away from the cam, in fact they will probably help because everything will be lined up correctly. This is how I understand it at least.
use the ones supplied. because of the rocker design, shorter pushrods are necessary. and no, pushrods do not take anything away from the cam. they have to do with geometry in keeping everything lined up properly.
