The great valvespring debate
Also now have 1518's in the TR224 car and its running great on season two with those now
I run these spring in my LS2-418, and will be using them on my LS3-431, Very good spring and been running them for over 2 years now and shift at 7400 rpm and no valve flote, My cam is a 257/266-.684/.658-114
Livernois Motorsports LS-Series Dual Valve Springs
Click to enlarge
Product Description
For vehicles with large camshafts, Livernois Motorsports recommends our dual valve spring, which is capable of .690 lift!
Specifications:
Install Height: 1.820
Max. Valve Spring Lift: .690
Spring Pressure Closed: 150lbs
Spring Pressure Open: 382@.620 / 410@.680
Coil Bind: 1.100
Complete spring kit available
Livernois Motorsports LS-Series Dual Valve Springs
Click to enlarge
Product Description
For vehicles with large camshafts, Livernois Motorsports recommends our dual valve spring, which is capable of .690 lift!
Specifications:
Install Height: 1.820
Max. Valve Spring Lift: .690
Spring Pressure Closed: 150lbs
Spring Pressure Open: 382@.620 / 410@.680
Coil Bind: 1.100
Complete spring kit available
Last edited by Randy WS6; Aug 8, 2011 at 10:52 AM.
I run these spring in my LS2-418, and will be using them on my LS3-431, Very good spring and been running them for over 2 years now and shift at 7400 rpm and no valve flote
Livernois Motorsports LS-Series Dual Valve Springs
Click to enlarge
Product Description
For vehicles with large camshafts, Livernois Motorsports recommends our dual valve spring, which is capable of .690 lift!
Specifications:
Install Height: 1.820
Max. Valve Spring Lift: .690
Spring Pressure Closed: 150lbs
Spring Pressure Open: 382@.620 / 410@.680
Coil Bind: 1.100
Complete spring kit available
Livernois Motorsports LS-Series Dual Valve Springs
Click to enlarge
Product Description
For vehicles with large camshafts, Livernois Motorsports recommends our dual valve spring, which is capable of .690 lift!
Specifications:
Install Height: 1.820
Max. Valve Spring Lift: .690
Spring Pressure Closed: 150lbs
Spring Pressure Open: 382@.620 / 410@.680
Coil Bind: 1.100
Complete spring kit available
In all of the years we've been using these springs, we've never had or heard of a single failure. We have even tested springs that came out of cars after as much as 60,000 miles with full bolt-on's and a large camshaft and they were still within spec.
-Rick
On The Tree
Joined: Mar 2009
Posts: 175
Likes: 1
From: shrewsbury, ma
This is the kind of info that makes me want to get the 1521's. This is the second person i have heard actually test them and be within a few pounds of new.
