I'm going to put a cam in my 318 and with it I will have to put new valve springs also. I'm going to order it as a package from lunati. The cam has .475" of lift. But it is made to be used with 1.5 rockers. So with the stock 1.6's it will have .510" of lift. They need to know the installed height and diameter of the springs I need. I can't find those 2 things anywhere. Can anybody help me with this?

 

I would ask lunati. They should be able to answer your questions.

 

i don't want to rain on your parade, but be cautious with cams and rockers and the maybe not so obvious need for pcm tuning to go with it. some people on the forum have had to spend a boatload of money to get their truck running again after putting in an unproven cam. even as detailed as squirrel's is, he fell into a cam pit a couple of years ago and ended up giving up on one cam and buying another.

you might want to work this from a different direction. contact sean at hemifever and start with an SCT tuner, and then ask him for proven cam/rocker/spring/pcm packages for your 318.

 

Actually, i did get that cam to work, but i had to eyebrow cut the pistons to get proper piston to valve clearance.

You'll need a tune with that large a cam, and the Mopar springs ending with part number 6062, are supposed to fit the stock heads spring pockets but aren't beehive, so you have to buy retainers as well

 

This is the cam I was looking at

 

This is the cam I was looking at

http://www.lunatipower.com/Product.aspx?id=1543&gid=287

 

Not sure how well that cam will work in your engine.... that's a flat tappet cam. You will be giving up a lot by losing the roller lifters.... not sure if valvetrain geometry is going to like it much either. Lifter angle is different from the older LA style blocks. I would find a different cam......

What year is your truck?

 

Mine is a 97

 

Cool, you can get custom tunes without having to re-mortgage your house, and first born male child.

Still would look for a different cam.......

 

Ok, I'll look around for a different one. I looked at the lunati voodoo roller cams and they have even higher duration and are 3x more expensive also.