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Old 10-26-2009, 10:47 AM   #21
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Originally Posted by massls1guy View Post
Running a breather while keeping all the original PVC setup is wrong.

WHY????? Lots of LS1s run just fine setup like that.
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Old 10-26-2009, 10:55 AM   #22
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If it works great for you then keep it.

I'm not sure why you would run a breather and then still keep the PCV line that can pull oil into the intake manifold. Isn't the point of the breather to be able to remove that line?
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Old 10-27-2009, 06:53 AM   #23
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Dyno tonight! Hope to see 425 out of it.
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Old 10-27-2009, 08:43 AM   #24
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Quote:
Originally Posted by massls1guy View Post
Running a breather while keeping all the original PVC setup is wrong.
After running it like this for over 130,000 miles and making 452/418 and only using a half quart of oil every 5,000 miles and with no oil in the intake tells me that it is right ...

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Old 10-27-2009, 08:47 PM   #25
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Originally Posted by Intercooler2 View Post
Dyno tonight! Hope to see 425 out of it.
Fat chance! 393 RWHP

So I'm looking at changing things.
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Old 10-27-2009, 08:52 PM   #26
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Quote:
Originally Posted by Monte4ever View Post
WHY????? Lots of LS1s run just fine setup like that.
mass1 is correct, if you run a breather cap on the oil filler you have to cap off the passenger side vent port that originally goes back into to the TB. otherwise you are defeating the true purpose of the breather.
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Old 10-27-2009, 10:57 PM   #27
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Quote:
Originally Posted by Intercooler2 View Post
Fat chance! 393 RWHP

So I'm looking at changing things.
Before I'd change things I would investigate as to what the real problem is. The engine made 393 rwhp at only 5700 rpm??? Post up the dyno graph,something is not right.
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Old 10-27-2009, 11:45 PM   #28
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I will see if I can't get it from Fran.

It basically climbed good but at 5700 it dropped right off back down to 363. At the shop there they thought it may be the rockers playing some role in valve float. I thought with Patriot Gold springs I would be fine.
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Old 10-28-2009, 07:14 AM   #29
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If it was valve float you would know for sure, your dyno graph would flatten out, not drop and it would feel like your car was just hovering in RPMs, the springs should be fine. Don't forget the converter is going to eat some of that power up, you RPM drop off could be the effect of the low duration cam. Post up your graph so we can see what you low/midrange power looks like. Pm'ing you to.
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Old 10-28-2009, 09:21 AM   #30
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You have something that is not right...I make 452/418 with heads/cam bolt ons using a 224/228 .581/.588 110 + 0 LSA .. I am a 6 speed but your auto should be making better numbers than that.
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Old 10-28-2009, 09:27 AM   #31
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Quote:
Originally Posted by slt200mph View Post
You have something that is not right...I make 452/418 with heads/cam bolt ons using a 224/228 .581/.588 110 + 0 LSA .. I am a 6 speed but your auto should be making better numbers than that.
What springs and rockers are you running? I asked Fran for the graph. I will post it if he forwards.
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Old 10-28-2009, 09:36 AM   #32
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Quote:
Originally Posted by Intercooler2 View Post
What springs and rockers are you running? I asked Fran for the graph. I will post it if he forwards.
Stock rockers and PRC dual springs
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Old 10-28-2009, 02:05 PM   #33
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That's about right for that cam, those heads, through an A4. It's harder than some people think to break 400rwhp through an automatic with a small cam.

A custom cut cam would have yielded the same driveability and better results. The 224/228 grind is ok, but it's dated technology.
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Old 10-28-2009, 03:54 PM   #34
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Quote:
Originally Posted by Damian View Post
That's about right for that cam, those heads, through an A4. It's harder than some people think to break 400rwhp through an automatic with a small cam.

A custom cut cam would have yielded the same driveability and better results. The 224/228 grind is ok, but it's dated technology.
The other guy in this thread made real good power with his although I don't know what heads.

I may have track numbers before the graph. Going tonight so will post back.
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Old 10-28-2009, 04:07 PM   #35
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i can't believe nobody has questioned the rockers yet.
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Old 10-28-2009, 04:50 PM   #36
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Thats a big stall so its not going to be a dyno queen for sure.

Run it at the track first and see what it does before you go changing things.
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Old 10-28-2009, 05:37 PM   #37
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Quote:
Originally Posted by Intercooler2 View Post
Fat chance! 393 RWHP

So I'm looking at changing things.
I have a very similar setup to yours, and my car was also dyno`d at RPM.
I sent a PM your way.
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Old 10-28-2009, 08:33 PM   #38
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Well I got rained out but did get 5 passes in. The weather was moist and not very cool either but the best run:

1.55 60'
7.28 1/8th
93.74 1/8th MPH
11.46 1/4
117.81 1/4 MPH
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Old 10-28-2009, 08:47 PM   #39
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If your car really weighs 3800, then you don't even need to worry about dyno #'s. 11.40's @ 118 is nothing to sneeze at on shakedown runs in a 3800lb car.
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Old 10-28-2009, 08:51 PM   #40
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Quote:
Originally Posted by Damian View Post
That's about right for that cam, those heads, through an A4. It's harder than some people think to break 400rwhp through an automatic with a small cam.

A custom cut cam would have yielded the same driveability and better results. The 224/228 grind is ok, but it's dated technology.
ummm.... or not. His run shows that.
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