[Mr69]

Can someone tell me what the recommended spring pressures are for the Lunati VooDoo BBC 60203 camshaft are? Closed and open pressures?

I have a new set of Isky 4105 springs which are supposed to yield 135 on the seat and I'm not sure on the open pressure yet. Will be stopping by the machine shop and check them today.

But nowhere can I find the recommended spring pressure for this hyd stick.
I'd assume 135 on the seat and 300-340 open ?????

This cams lift is approx .550

 

[dreis454]

http://www.holley.com/data/Products/Technical/60203.pdf

thats a link to the cam card for that cam see the suggested springs for the cam & look up the specs for them. It states 120lbs on the seat
I used comp 911 springs with mine.

 

[Mr69]

That cam card doesn't help me.
Stock installed height is 1.880
They must be dropping it to 1.820 with their retainer?

All I have been reading is that these recommended Lunati Springs have valve float at 5200 rpms. Increasing the spring pressure fixes this.
If they call for 120 on the seat, I wouldn't be afraid of 135
but I want to know the open pressure. This is more important IMO

I'm assuming the Lunati spring is a single coil with a damper spring? Or is it a dual spring?

 

[OutCast]

Here's the link to the specific spring
http://www.holley.com/73815.asp

It's a single spring. Good luck with this cam, as I just ordered it also for my setup, thanks to positive input on this site.

John

 

[Mr69]

Here's the link to the specific spring
http://www.holley.com/73815.asp

It's a single spring. Good luck with this cam, as I just ordered it also for my setup, thanks to positive input on this site.

John

Thanks John, that's exactly what I needed. I guess I just didn't know where to look. Now I do.