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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

gm847 idle

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Old 02-25-2009, 11:06 PM
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Default gm847 idle
to all of u guys running these cam what rpm idle did set just wondering cause i order my tune from tryfecta and told them to set it at 7500 what u guys think
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Old 02-25-2009, 11:12 PM
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Originally Posted by -DIABLO-
to all of u guys running these cam what rpm idle did set just wondering cause i order my tune from tryfecta and told them to set it at 7500 what u guys think
Jesus Christ if that's your idle what the hell is your redline!?!?

My bike redlines at 15,500rpm, but it still idles at only 2000 rpm.
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Old 02-25-2009, 11:16 PM
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haha holy ***** man,
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Old 02-25-2009, 11:16 PM
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i think 750 will be ok, maby a little low if anything
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Old 02-25-2009, 11:33 PM
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It depends on how bad you want it to lope. Probably want it in the 8-900 range.
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Old 02-26-2009, 12:38 AM
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750 will sound nice but it's all up to personal opinion
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Old 02-26-2009, 02:03 AM
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wow thats low man
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Old 02-26-2009, 08:49 AM
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I asked Madtuner to set it to 900 but the tach indicates 1000. Dunno if he set it at 1000 or the tach is just inaccurate. In any case, it still has a pretty good lope but sounds more like a hotcam then an 847/CC306 type of sound. I'm hoping to get my car dyno tuned in spring and I want it set to 750 or 800
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Old 02-26-2009, 09:15 AM
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Originally Posted by -DIABLO-
to all of u guys running these cam what rpm idle did set just wondering cause i order my tune from tryfecta and told them to set it at 7500 what u guys think
You wont get any lope at that idle!
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Old 02-26-2009, 09:28 AM
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Originally Posted by Purple95Z28
I asked Madtuner to set it to 900 but the tach indicates 1000. Dunno if he set it at 1000 or the tach is just inaccurate. In any case, it still has a pretty good lope but sounds more like a hotcam then an 847/CC306 type of sound. I'm hoping to get my car dyno tuned in spring and I want it set to 750 or 800
He set mine to 900rpm too. It looks like my gauge is of by 100 at idle and close to 200 when driving !
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Old 02-26-2009, 11:23 AM
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That's a big cam for only 750. 850-900 would be better plus it'll sound choppier a lil higher, down low it's gonna struggle to idle a just lope.
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Old 02-26-2009, 11:40 AM
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Mine set at about 800 and sounded great.

Vids
http://videos.streetfire.net/video/E...day_100752.htm
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Old 02-26-2009, 11:54 AM
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Originally Posted by DroppedM6Z
Mine set at about 800 and sounded great.

Vids
http://videos.streetfire.net/video/E...day_100752.htm
every little bit helps.
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Old 02-26-2009, 12:06 PM
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hope i helped....
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Old 02-26-2009, 02:17 PM
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i would let them decide, thats what i did with my mad z tune, he set it at 950. still has some chop to it.
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Old 02-26-2009, 03:35 PM
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mines set to 900 but I want to put it to about 800 next time I retune.

http://www.youtube.com/watch?v=_1K8ouYXp2M
Attached Thumbnails gm847 idle-camaro-project-08-250-edited-.jpg  
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Old 02-26-2009, 03:40 PM
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I think 750 will be fine. I have a MadTuner (Madz28) tune for my CC503 and my idle is set to 750 and it sounds good. The tach does read slightly higher, but that's normal for these cars.
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Old 02-26-2009, 03:52 PM
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Originally Posted by ss.slp.ls1
I think 750 will be fine. I have a MadTuner (Madz28) tune for my CC503 and my idle is set to 750 and it sounds good. The tach does read slightly higher, but that's normal for these cars.
the manners of a gm847 are different from a cc503 but I think that if everything else is working well then I think 750 idle would be possible.
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Old 02-26-2009, 03:55 PM
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Originally Posted by MadMike 97 Z28
the manners of a gm847 are different from a cc503 but I think that if everything else is working well then I think 750 idle would be possible.
This I know this. I sometimes wish my idle was a little lower, so that I have a little more lope. But I could always just get a lopier cam, lol.
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Old 02-26-2009, 09:18 PM
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thanks for all the replays guys i got the tuner from trifecta yesterday and the idle was set to 800 but i wanted to hear how 750 sounds and call vince and he send me a retune through email and man it sounds great better that 800 ill prolly go lower ill have a sound clip for yall tomorrow
hey also im geting codes for o2 and tps u think this afects my performance
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