LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Big cam, and low brakes vacuum...

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Old May 16, 2004 | 01:16 PM
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zhevy-1's Avatar
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Big cam, and low brakes vacuum...

I put a big cam on my Z28, and as I was expecting, my brakes were going to suffer a bit. So, what are you guys doing to fix this?
I've seen a vacuum reservoir sold by Summit Racing. What you guys think of it?
Anything you guys can recommend?
I'm going to upgrades my brakes to a Baer Kit, but even with that kit, I think the lack of vacuum may still be a factor.
Thanks-Goose
Old May 16, 2004 | 01:26 PM
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I did a Google search, and I found this one by Crane Cams...

http://www.cranecams.com/pdf/99590.pdf

...and this one by Summit Racing...

http://store.summitracing.com/productdetail.asp?p=1838
Old May 16, 2004 | 03:27 PM
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Turning the idle up helps a bit too.
Old May 16, 2004 | 04:22 PM
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How big? I have a 233/239 and the brakes work fine. I did tweak the closed throttle timing tables a bit though.
Old May 16, 2004 | 04:54 PM
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I have that problem with my setup..I can't "brake torque" the car hardly at all...like to "stall it up" at the track...I can only get it to about 19-2000rpm...thats it..
Old May 16, 2004 | 08:24 PM
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Originally posted by madwolf
How big? I have a 233/239 and the brakes work fine. I did tweak the closed throttle timing tables a bit though.
Hehe! much bigger than that. My intake duration is 238.
I'm having the car dyno tuned in a couple of days, right now, I'm taking it easy on the break-in. The brakes have gotten a bit better, but not much. That's why I wanted to see what you guys are doing about it, if in the same situation as I am.
Thx-Goose
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