228r cam with 1.8 rocker arms
05-23-2011, 06:48 PM
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228r cam with 1.8 rocker arms
What will be the total lift if I went to a 1.8 rocker ARM how will it effect the way th cam works the cam specs to 228r is
228/228 .588/.588 will this be something worth doing
228/228 .588/.588 will this be something worth doing
05-23-2011, 06:56 PM
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622.58" will be your new valve lift if you use 1.8 rockers. Not really woth it IMO. Yor are better off getting a cam that has the lift you desire with 1.7 rockers. Also a side note TSP does not recommend 1.8 rockers with that cam due to the fast ramp rates of the lobes.
05-24-2011, 01:17 AM
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just run a custom ground cam with similar duration and more lift. spend the money on stock ratio roller rockers or get the comp trunion upgrade for the stockers.
05-24-2011, 01:17 AM
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05-24-2011, 04:25 PM
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Before you consider adding lift, you need to know where the max flow of your heads is. If you max lift is at .575, adding more lift to your current cam may hurt performance, not help it.
Speccing lift requires knowing that max flow point is in lift. Then you get slightly more lift, so you are hitting that max flow point twice per valve event (e.g. keeping it open at max lift for twice the amount of time than if you match your max lift point). Going past that point can hurt you if the heads flow poorly with that much lift.
Have you done long tubes? If not, add 1 7/8s LTs. If so, if you didn't do 1 7/8s, sell whatcha got and go big
You could also go to a fast 90/90 or 105/105 for more power.
Speccing lift requires knowing that max flow point is in lift. Then you get slightly more lift, so you are hitting that max flow point twice per valve event (e.g. keeping it open at max lift for twice the amount of time than if you match your max lift point). Going past that point can hurt you if the heads flow poorly with that much lift.
Have you done long tubes? If not, add 1 7/8s LTs. If so, if you didn't do 1 7/8s, sell whatcha got and go big
You could also go to a fast 90/90 or 105/105 for more power.
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