Rocker Questions
On The Tree
Joined: Sep 2004
Posts: 143
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From: St. Clair
Blackbird...Before the spring upgrade, I would shift at 6000, after I would shift as close to 6600 as I could, 6400, 6500, just trying to miss bumping the rev limit...
Vettenuts...I think the difference in cam dimensions was close enough that the lifters adjusted for the difference...Far as I know, the LS6 and LS1 used the same rockers and same pushrods, only the springs were different...
Peace...Gman
Vettenuts...I think the difference in cam dimensions was close enough that the lifters adjusted for the difference...Far as I know, the LS6 and LS1 used the same rockers and same pushrods, only the springs were different...
Peace...Gman
On The Tree
Joined: Apr 2004
Posts: 119
Likes: 0
From: Quiet Place in the Country, FL
Check out the Vinci website and their explanation of the Crane "Quick-Lift" rocker body geometry. It makes a lot of sense after you read it. He installed them on my 03 Tahoe and it really woke the thing up. Super quiet, too. Probably quieter than stock. The whole kit came with rockers, studs, guideplates and HD pushrods of proper length. We didn't dyno my truck, but one of the tech editors of one of Primedia's magazines was there working on a 03 Pickup with a 5.3 and they dynoed his truck and the rockers were worth 20hp. (On a HP/$ basis, that sure isn't bad!!) The entire article will be out in a couple of months. Chevy High Performance, I think.
Originally Posted by QuietTahoe
Check out the Vinci website and their explanation of the Crane "Quick-Lift" rocker body geometry. It makes a lot of sense after you read it. He installed them on my 03 Tahoe and it really woke the thing up. Super quiet, too. Probably quieter than stock. The whole kit came with rockers, studs, guideplates and HD pushrods of proper length. We didn't dyno my truck, but one of the tech editors of one of Primedia's magazines was there working on a 03 Pickup with a 5.3 and they dynoed his truck and the rockers were worth 20hp. (On a HP/$ basis, that sure isn't bad!!) The entire article will be out in a couple of months. Chevy High Performance, I think.
Thanks
Originally Posted by vettenuts
Just want to be clear, you are speaking of a Crane 1.8 installation on a stock cam, correct?
Thanks
Thanks
Teching In
Joined: Mar 2005
Posts: 6
Likes: 0
Originally Posted by FIREHAWK#608
If you have an '02 then you don't need to upgrade the springs! They are the same Z06 springs. ALL '02 LS1 & LS6 engines came with the same springs, clutch, oil pump, intake, hydraulics. I would buy a set of Harlan Sharp 1.8 for $330 shipped and forget about SLP rockers 
Originally Posted by JoeFranks
actually, SLP no longer has the 1.85 rockers. They aren't advertising it on their website but if you order rockers, you'll get 1.8 Harlen Sharp rockers or Yella Terra rockers.
Thread Starter
On The Tree
iTrader: (1)
Joined: Jan 2005
Posts: 102
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From: Corpus Christi, Texas
I can still get the 1.85 from an SLP dealer that has them in stock. So thats not a problem.
But about the VHP rockers I am kinda confused how it was saying that the 1.7 rockers changes ratios to a 1.6 and back. Wouldnt it be better to stay at the 1.7 ratio? Someone please explain this to me cuz I'm not getting it.
But about the VHP rockers I am kinda confused how it was saying that the 1.7 rockers changes ratios to a 1.6 and back. Wouldnt it be better to stay at the 1.7 ratio? Someone please explain this to me cuz I'm not getting it.
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Originally Posted by blackbird007
I can still get the 1.85 from an SLP dealer that has them in stock. So thats not a problem.
But about the VHP rockers I am kinda confused how it was saying that the 1.7 rockers changes ratios to a 1.6 and back. Wouldnt it be better to stay at the 1.7 ratio? Someone please explain this to me cuz I'm not getting it.
But about the VHP rockers I am kinda confused how it was saying that the 1.7 rockers changes ratios to a 1.6 and back. Wouldnt it be better to stay at the 1.7 ratio? Someone please explain this to me cuz I'm not getting it.
http://www.vincihighperformance.com/...20PAGE%20.HTML
I wonder what the rocker arm ratio for the LS2 & LS7 are. If they are greater than 1.7s and would fit the LS1/6 heads, then that might make a pretty good upgrade too.
I'm happy with the way the SLP 1.85s works with my tiny cam. It really woke up the top end. It netted me a solid 2 mph gain in the traps. It feels like it added some oomph in the 2000-3000 rpm range too.
I'm happy with the way the SLP 1.85s works with my tiny cam. It really woke up the top end. It netted me a solid 2 mph gain in the traps. It feels like it added some oomph in the 2000-3000 rpm range too.
