Roller Rocker Ratio

**WS6ICK** · 09-15-2006, 01:40 PM

I am getting ready to install a LS6 kit on my 2000 Trans Am, LS1, WS6. I bought the stock GM heads and cam. My question is Summit sells a Harland Sharp roller rocker for LS1/LS6 and their ad says its a direct bolt on and will fit under stock valve covers for both engines. The stock ratio is 1.7:1 but I want to get the 1.8:1 ratio roller rockers. Will I have to worry about valve to piston clearance with the 1.8:1 ratio rockers? Do I need to change valve springs?
Thanks

**SDMForever** · 09-15-2006, 03:39 PM

no you should be just fine

**Sunset T/A** · 09-15-2006, 05:37 PM

Talk to their technical service people and see what they say. Especially about pushrod length. They can help you.

**SDMForever** · 09-15-2006, 06:02 PM

I would change the springs though

**WS6ICK** · 09-16-2006, 12:33 AM

If I decide to go with a bigger cam, what size should I get that will work with the stock LS6 heads, Pushrods and Lifters? The car has an A4. This car is not a daily driver but I do take it to the track on Friday nights and I would like to drive it on the HWY if I need to.