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110 LSA for a procharged setup???

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Old 12-06-2007, 07:38 AM
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Default 110 LSA for a procharged setup???

Im looking for some opinions on this. Last week i was given the specs of 226/234 110 LSA .560s for what is supposed to be my daily driven 383 Procharged LT1.

Heres the setup:
Fully built 383 LT1 w/ported Trick Flow heads and Intake
Compstar crank/rods/ Ross custom blower piston
Engine should sit around 8.7:1 compression
Jesel Sportsman shaft mount rockers
Procharger running 12-16 lbs on the street w/ front mount intercooler
3400 Vig Converter in a beefed up 4L60e

Now this is a proven shop that i respect, but a 110 LSA seems to go against the norms of a forced induction camshaft. They say it is one that seems to work best for them based on past experiences and they do it because of the relatively short duration. And their cars DO RUN fast. Im just looking for your opinions guys? Any input is appreciated. Keep in mind the goal of this setup is also to be my DAILY DRIVEN car....
Old 12-06-2007, 08:44 AM
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is that with 1.5 rockers. I recently order a custom cam for a turbo setup with almost the same specs. Goes a little higher with 1.6 RR's and have a .60x lift
Old 12-06-2007, 09:08 AM
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Originally Posted by BLWNLT1_T/A
is that with 1.5 rockers. I recently order a custom cam for a turbo setup with almost the same specs. Goes a little higher with 1.6 RR's and have a .60x lift
no its with 1.6 rockers on mine
Old 12-06-2007, 12:59 PM
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is the duration at 50 or adv?
Old 12-06-2007, 01:22 PM
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I would think that your Lobe sep.would be a little wider.A 113 or 114. I have seen them as much as a 115 Lobe sep. That tight of a lobe sep. Just dosn't seem like a long enough time to keep the valve's closed to be useful on a blower setup.
Old 12-06-2007, 01:48 PM
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Originally Posted by Ari G
is the duration at 50 or adv?
50

Originally Posted by HUNTER02SS
I would think that your Lobe sep.would be a little wider.A 113 or 114. I have seen them as much as a 115 Lobe sep. That tight of a lobe sep. Just dosn't seem like a long enough time to keep the valve's closed to be useful on a blower setup.
Thats the consensus on a blower motor....dont want to get air flowing through when both valves are open and bleed off boost. However these guys have some very respectable cars out there (mostly NA though) so i was just seeing if anyone else had tried out this kind of cam.
Old 12-06-2007, 02:26 PM
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Perhaps stronger midrange and lower peak hp I'm thinking?
Old 12-06-2007, 06:34 PM
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The Aussies runs lots of cams like that in blower applications. They seem to make stupid power with them.
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Old 12-06-2007, 07:28 PM
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According to David Vizard a little overlap is needed with a blower application for the street. In other words keep the cam you have
Old 12-07-2007, 07:21 AM
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just to give you an idea of some of the fastest lt1s and overlap.
I ran 110, Jeff gilberts set up went 9.0 was capable of high 8s for sure had 109, Z8s had 108.5 on his when he had the YSI.
go figure everyone seems to know alot about blower cams
Old 12-07-2007, 07:48 AM
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I wouldnt sweat it. FWIW I ran 8.90s with a 115LSA cam and I bet it would run 8.90s with the same cam @ 110LSA. I just dont like the power steering killing the car when I turn the wheels and its idling Lower compression and somewhat small CID and low end tractability wont be ideal but if you are driving the car now then I say leave it in. As far as average power output in the usable RPM range I doubt there would be a huge difference between a few degrees of LSA.

You will have guys argue this on both ends of the LSA spectrum and both will make decent power. Camshafts are cheap and easy to swap, try a few different cams, thats what I do
Old 12-07-2007, 08:03 AM
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Just to put it in perspective the EPP cam kp is running has 6 degrees of overlap

I'd say some overlap must work
Old 12-07-2007, 02:56 PM
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But I guess it needs to be taken into context with everything else.

Intake, blower air volume, exhaust, CR etc etc etc.
Old 12-07-2007, 05:24 PM
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Originally Posted by stevieturbo
But I guess it needs to be taken into context with everything else.

Intake, blower air volume, exhaust, CR etc etc etc.
Yea, or you can use my redneck approach and just keep trying different things until you get the desired results Might not be the quickest, cheapest or 'right' way but I'm having fun, sorta..
Old 12-08-2007, 02:06 PM
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Thanks for all your input guys
keep it coming



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