Question about LLSR on the street
IMO I would use regular rockers and use shims. Everything just stays in place that way.
Regarding PITA it takes more effort on initial set up but that's it. If you do the shim method, I'm betting maintenance is minimal. Much less than adjustables
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From: Poplarville, MS
I would be more concerned about the extra weight of the adjustment screw. If that is even an issue. I have never used the Yella Terra adjustable rocker arms but have used other brands on non LS engines and have never had a problem with the adjusters working loose.
My question was to oil flow from different viscosities in a hydraulic lifter. The most important thing with oil viscosity seems to be in bearing clearance and oil pump capacity but it has to affect somewhat lifter fill and bleed. How much is the question.
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From: Iowa
I would assume the same way it would affect say, for example, a motorcycle shock. All else the same, you change damping rates in the front fork simply by changing oil viscosity. I would think a lifter would act in a similar manner. Thicker oil being stiffer and thinner oil being softer.
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Good thoughts on the oil. I don't know the answer to those questions... someone with experience would have to chime in.
I currently use Royal Purple HPS 5w30, I get it at a nice discount because of where I work.
I currently use Royal Purple HPS 5w30, I get it at a nice discount because of where I work.
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From: Baton Rouge La
You will love the LLSR after the first up set zero maintenance. The post about the Hydraulic VS Solid cam is not a fair test. The solid has the advantage over the Hydraulic on this test. I do think the solid will make more TQ & HP even if the durations & Lift at the valve are the same. The Solid will be more stable at the higher RPM range than the Hydraulic.
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You will love the LLSR after the first up set zero maintenance. The post about the Hydraulic VS Solid cam is not a fair test. The solid has the advantage over the Hydraulic on this test. I do think the solid will make more TQ & HP even if the durations & Lift at the valve are the same. The Solid will be more stable at the higher RPM range than the Hydraulic.
I am on my second engine with the Cam Motion LLR. I have re-adjusted lash on both engines only once after breakin-in then never again.
What I can tell you is that the valve train is quieter than my previous Comp hydraulic setups, makes more power and revs to the moon.
One build utilized Jesel shaft rockers and the other T&D shaft rockers. Both of those rocker systems are excellent. I recommend spending the money on good rockers like the Jesel or T&D. It is one area where money is very well spent.
Here are two dyno videos of each engine. The first is a SBE 6 liter LQ9 on a chassis dyno, the 2nd it a 403" Dart Pro 1 LS3 headed LS2 on an engine dyno.
What I can tell you is that the valve train is quieter than my previous Comp hydraulic setups, makes more power and revs to the moon.
One build utilized Jesel shaft rockers and the other T&D shaft rockers. Both of those rocker systems are excellent. I recommend spending the money on good rockers like the Jesel or T&D. It is one area where money is very well spent.
Here are two dyno videos of each engine. The first is a SBE 6 liter LQ9 on a chassis dyno, the 2nd it a 403" Dart Pro 1 LS3 headed LS2 on an engine dyno.
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[QUOTE=speedtigger;19315081]I am on my second engine with the Cam Motion LLR. I have re-adjusted lash on both engines only once after breakin-in then never again.
What I can tell you is that the valve train is quieter than my previous Comp hydraulic setups, makes more power and revs to the moon.
Wow. That's some serious power. How long and how many miles have you ran these engines?
What I can tell you is that the valve train is quieter than my previous Comp hydraulic setups, makes more power and revs to the moon.
Wow. That's some serious power. How long and how many miles have you ran these engines?
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I have ran them both at the track. The 6 liter had countless track passes, tuning and refinement on it. It went as quick as 10.86@ 123 MPH in good weather at #3700 on motor. The 403 only has a few passes on it in the 1/8th so far. It went 6.60s @ 102-103 on motor with a tight nitrous converter, 3.73 gears and a 28" tire. The 403 is a beast and a lot of fun.
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I have ran them both at the track. The 6 liter had countless track passes, tuning and refinement on it. It went as quick as 10.86@ 123 MPH in good weather at #3700 on motor. The 403 only has a few passes on it in the 1/8th so far. It went 6.60s @ 102-103 on motor with a tight nitrous converter, 3.73 gears and a 28" tire. The 403 is a beast and a lot of fun.
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So here's a question... for a 346, what would be the best heads for a llsr setup with 4k stall and 4.10 gears? Basically a all out engine? I assume the TFS 215s, MMS 220s, or MAST small bore LS3s?