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

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Old 03-24-2008, 08:46 PM
  #16  
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Originally Posted by black96z28
in the frist graph, the blue line is my car, the red line is the old lt1 record and in the second graph I had a bad O2 sensor.......
Well that makes more sense knowing that. Your bad O2 really doesn't play a role in WOT. If anything it would add extra fuel.
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Old 03-24-2008, 08:54 PM
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yea your bad O2 definetly would not make ur car lean. Everyone's obviously telling you to check your rod length by someone else, so go do it, the ones you have are obviously way to long.
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Old 03-24-2008, 09:05 PM
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Dude, your pushrods are too long. I dont know if that could result in valve float, but there's a pretty good chance.
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Old 03-25-2008, 02:32 AM
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I can't believe your pushrod length. I wonder if you've figured it out yet? hmmm
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Old 03-25-2008, 09:11 AM
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Tying to figure out what to do yet, may end up changing, the Springs, PR's, cam and Timing chain..........
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Old 03-25-2008, 09:17 AM
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Originally Posted by black96z28
Tying to figure out what to do yet, may end up changing, the Springs, PR's, cam and Timing chain..........
now i understand why your having so many problems, you just dont listen

why ask for help if your not gonna listen. CHECK PUSHROD LENGTH
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Old 03-25-2008, 09:26 AM
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and change one thing at a time, not a shotgun approach
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Old 03-25-2008, 09:40 AM
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Originally Posted by dangalla
now i understand why your having so many problems, you just dont listen

why ask for help if your not gonna listen. CHECK PUSHROD LENGTH
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Old 03-30-2008, 07:04 AM
  #24  
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There is other people haveing this same issue too, it seems all are pointing to the springs not having enough pressure..........
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Old 03-30-2008, 07:44 AM
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Originally Posted by black96z28
There is other people haveing this same issue too, it seems all are pointing to the springs not having enough pressure..........
There are far more people running a similar setup without problems, then there are with problems. You don't seem to understand how or why pushrods that are too long cause these kind of problems. I don't see how you are running those pushrods, it doesn't add up to me. A had a previous engine builder measure pushrod length, and because he wasn't used to hydraulic roller setups his measurement was off .150". FWIW my LT1 required 7.150" pushrods with OEM lifters, and 7.250" with Morel lifters.
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Old 03-30-2008, 10:19 AM
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Originally Posted by black96z28
There is other people haveing this same issue too, it seems all are pointing to the springs not having enough pressure..........
Pushrods first, then springs. Never make two changes at once.
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Old 03-30-2008, 06:29 PM
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Originally Posted by 94zgreenmachine
Like everyone else has said, check your pushrod length AGAIN, but if you are worried about spring pressure, just take the rear springs out of the back of your car and then maybe the pushrod length you have now would work.
Wait... What?
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Old 03-30-2008, 06:35 PM
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Originally Posted by 94zgreenmachine
Like everyone else has said, check your pushrod length AGAIN, but if you are worried about spring pressure, just take the rear springs out of the back of your car and then maybe the pushrod length you have now would work.
Wa,Wa, What
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Old 03-30-2008, 06:38 PM
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7.45" is entirely too long! 7.2" is stock. With a milled head, thinner head gaskets, and a decked block would take you to below 7.15".
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Old 03-30-2008, 06:45 PM
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Originally Posted by MeanGreen97Z
7.45" is entirely too long! 7.2" is stock. With a milled head, thinner head gaskets, and a decked block would take you to below 7.15".
we have been telling him this for 2 threads and over a week yet he refuses to believe us because his "builder" says that cant be true


other than needing a new builder you need shorter pushrods, if your just to lazy to check them swap them for a set of 7.150 rods and take it for a ride and let us know how that goes
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