what pulley to get
I have the March and am currently experiencing difficulties with the install. I am positive that it needs to be machined because when I torque it to 240 ft/lbs the crank freezes up. Other than that it seems like a great product. It weighs about the same as the stocker and its balancing properties will help reduce the load on the main bearings along with eliminating the false knock associated with other UD pullies.
I got the SLP one and don't have a single complaint with its performance. I was a little bummed that it was silver in color and not black like I have seen in all of the pics, but its not too bad. It is nice and sturdy and does not cause false knock, verified on efilive. I know everyone doesnt really care for SLP but their under drive pulley works well.
Originally Posted by Brak Attack
I have the March and am currently experiencing difficulties with the install. I am positive that it needs to be machined because when I torque it to 240 ft/lbs the crank freezes up.
Taken from: http://www.ls1howto.com/index.php?article=23
11) I installed a double roller timing chain and it seems my ASP underdrive pulley is interfering with the oil pump. Is this right?
Yes, in some circumstances (especially when using a corvette ASP pulley), the ASP pulley will need to be machined for clearance when using a double roller timing chain. The picture below illustrates the machining required.
