Spring Install height
Thread Starter
Instructor
Joined: Dec 2008
Posts: 127
Likes: 0
From: Grand Rapids Mi.
Spring Install height
I have Dart Pro1 heads with ferrea valves. 4.9 int/4.915 ext,918 springs,comp cam cups (.060) steel retainer and locks. Install height was only 1.7. I had a pair of ProComp head and installed this setup on them and had 1.69. Why am i not getting 1.8 as recommended. i cant understand why i am getting the same spring height on two different heads. should i be using different retainers,keepers or what. Thanks
Racer
Joined: Feb 2003
Posts: 418
Likes: 28
From: Evansville IN
Yes. You'll need to change something to get the height correct.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Do you have the original Rev valves that came with the heads? Make some comparative measurements. My Darts set up around 1.750" as I recall but would need to pull my notes. At that height, do you clear the lift?
