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i'm only looking to pick up to 11.00.
around 2 tenths

Tex

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Throw the MP 590 in it and give it a go.

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Mr P
i have never had the heads flowed,but they do seem to work
i am open to suggestion.

Tex

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I think that cam your looking at would be about perfect...
yes it will have a little less duration at the tight
lash but the wider LSA will help the top end and it
wont be soft in the mid range...street driving the
wider LSA is nice but it wont have much lope to it
if you like that

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Quote:

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Mr P
i have never had the heads flowed,but they do seem to work
i am open to suggestion.

Tex

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I think that cam your looking at would be about perfect...
yes it will have a little less duration at the tight
lash but the wider LSA will help the top end and it
wont be soft in the mid range...street driving the
wider LSA is nice but it wont have much lope to it
if you like that

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Quote:

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Quote:

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Quote:

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Mr P
i have never had the heads flowed,but they do seem to work
i am open to suggestion.

Tex

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I think that cam your looking at would be about perfect...
yes it will have a little less duration at the tight
lash but the wider LSA will help the top end and it
wont be soft in the mid range...street driving the
wider LSA is nice but it wont have much lope to it
if you like that

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If he wants to gain 2 tenths that cam will be far from perfect IMO. In a similer test I lost a tenth from a such a change. But with the 110 LS it was much more street friendly. But similer doesnt mean exact.

It was a HD vs HD, but the approximate lifts and duration "differences" would of been about the same between the above mentioned 248* 509 HD and the 251* Lunati solid.

My two cams numbers were
,
1st cam:
108 LS MP 484
.484 lift 241*@.050 Intake.
.484 lift 241*@.050 Exhaust.

2nd cam:
110 LS Eddy 480
.480 lift 238*@.050 Intake.
.495 lift 246*@.050 Exhaust


On the above test I was expecting A bit more ET and top end with the combo. A little more low end grunt with the shorter intake duration and a little more top end with the wider LS and more exhaust duration.

The results were about 1 to 1.5 tenths less with a more streetable driving combo. Both cams were installed 4* advanced.


The conclusion I gained from this was, between all the differences between the two cams at LS,intake Lift/exhaust Lift.

At this level of duration, Duration @ .050 played the biggest part in performance.

Not lobe sep., or higher exhaust lift.

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This is a solid(not a hyd)... it will pull more
RPM than the hyd... thats why I asked the head flow
which you believe can do it

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thanks again for all the input.
the 590 looks unobtainium at the moment,no biggy as i'm not ready yet.
Deaks,i know you have more comp but how does your motor/590 cam idle - way high?rough like a 509?
am i correct in thinking that i will need 6 - 8 degrees more duration on a solid to be somewhat equivilent to a hydro cam.hence from what some are saying i may really need closer to 260 or 265 to see a real gain,plus raise my peak power to around 6300 from 5800 now.is this what you are pointing out Greg ?
by the way i have 1 7/8 hooker comps into a 3"system to the diff with aero chambers.825 mighty demon on a M1 single plane.
Tex

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am i correct in thinking that i will need 6 - 8 degrees more duration on a solid to be somewhat equivilent to a hydro cam.hence from what some are saying i may really need closer to 260 or 265 to see a real gain,plus raise my peak power to around 6300 from 5800 now.
Tex

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Yep, you are correct

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tex013:
all my info shows 265 but ?
i think i will need at least 258/260@050 to see a real gain.
Tex

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440Jim:
In addition to the actual duration at 0.050", this is what Dwayne Porter measured on one a few years ago.

MP .590 cam, actual measurements-
DUR. @
.020=303.5
.050=270.5
.100=235.0
.150=205.0
.200=177.0
.250=148.5
.300=117.0
.350=76.0
lobe [Email]lift@TDC[/Email] @105 ICL=.140
LSA 106

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