Stock 3.62 Crank guys, how high are you spinning?
11-26-2013, 08:16 PM
#1
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Stock 3.62 Crank guys, how high are you spinning? I was wondering how high everyone with a stock 3.62 crank was spinning their motors and what top end/valve train they were using to get there;
Redline:
Heads:
Cam:
Rear End Gear Ratio:
Intake Manifold:
Lifters:
Pushrods:
Rocker Arms:
Valve Springs:
I've yet to dyno but;
Ported LS3 Heads
236/236 .587/.587 112.5 lsa
3.50 Gears
OEM LS3 Intake Manifold
OEM LS7 Lifters
7.4 Chromoly
OEM Off Set LS3
PRC .675'' Lift Springs
I dont think 7500 RPM would be in issue but would like to know what you've got going on.
Cheers
Redline:
Heads:
Cam:
Rear End Gear Ratio:
Intake Manifold:
Lifters:
Pushrods:
Rocker Arms:
Valve Springs:
I've yet to dyno but;
Ported LS3 Heads
236/236 .587/.587 112.5 lsa
3.50 Gears
OEM LS3 Intake Manifold
OEM LS7 Lifters
7.4 Chromoly
OEM Off Set LS3
PRC .675'' Lift Springs
I dont think 7500 RPM would be in issue but would like to know what you've got going on.
Cheers
Last edited by IT_SS; 11-27-2013 at 01:25 PM.
11-27-2013, 12:06 PM
#5
Redline: been to 7500 on one occasion
Heads: stock 317
Cam: triple 12
Intake Manifold: pro-flow
Lifters: stock
Pushrods: comp 5/16"
Rocker Arms: stock
Valve Springs: PRC 675
Been to 6800 quite a few more times, but usually shift around 6500. No need to shift higher.
Heads: stock 317
Cam: triple 12
Intake Manifold: pro-flow
Lifters: stock
Pushrods: comp 5/16"
Rocker Arms: stock
Valve Springs: PRC 675
Been to 6800 quite a few more times, but usually shift around 6500. No need to shift higher.
11-27-2013, 12:25 PM
#7
I shift at 7400. Ported LSA heads
My cam is low lift and higher duration so the lobes are very mild
Heavy and big stainless intake valve
Ls3 intake
Ls7 lifters
3.27 gears
Double gold springs
It wants to pull strong past that. Never have let it though
I have a very large turbine too. Drive pressure stays under 1:1 with boost
My cam is low lift and higher duration so the lobes are very mild
Heavy and big stainless intake valve
Ls3 intake
Ls7 lifters
3.27 gears
Double gold springs
It wants to pull strong past that. Never have let it though
I have a very large turbine too. Drive pressure stays under 1:1 with boost
Last edited by rotary1307cc; 11-27-2013 at 12:31 PM.
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11-27-2013, 12:46 PM
#8
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I shift at 7400. Ported LSA heads
My cam is low lift and higher duration so the lobes are very mild
Heavy and big stainless intake valve
Ls3 intake
Ls7 lifters
3.27 gears
Double gold springs
It wants to pull strong past that. Never have let it though
I have a very large turbine too. Drive pressure stays under 1:1 with boost
My cam is low lift and higher duration so the lobes are very mild
Heavy and big stainless intake valve
Ls3 intake
Ls7 lifters
3.27 gears
Double gold springs
It wants to pull strong past that. Never have let it though
I have a very large turbine too. Drive pressure stays under 1:1 with boost
11-27-2013, 01:11 PM
#9
A lot is going to be the profile of the cam lobe. If it is too aggressive and unstable for the limited amount of spring available on that heavy *** valve it may not make it over 7k and stay stable
Only one way to see
Only one way to see
