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

New gm847 video

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Old Dec 5, 2006 | 04:38 PM
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New gm847 video

just got my cam done last wednesday been quite a trip. Few problems mostly the tuning, i just got my madz28 tune it seems ok so far but i didnt drive it just let it get to warm up temps in the drive. Had a problem with low psi for the oil, so i swaped in some of the 0-w30 german stuff and so far it looks good, im feeling alot better i was thinkin a cam bearing but soooo far knock on wood it was holding it own while idling vs. before.

So heres my setup gm847, madz tune, 383, lt4 heads, open headers/xpipe, 918 springs, comp promag 1.6 nsa rr, comp hiteck pr 7.200 , a4 with stock stall but ive got a 3600 vig coming supposed to be here next week. I know i really need to get this thing dyno tuned thats in the works.

Now if someone can host a video for me let me know and ill email the video out.
Old Dec 5, 2006 | 06:42 PM
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hang on ill have a link posted, my brother is hosting it for me. check back in about 15 minutes should be ready to roll then. the clip is about a minute and a half. ill try to get something more/better in a few days its just to damn cold and my tunes a little off and my pants were falling down lol
Old Dec 5, 2006 | 06:52 PM
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Hurry up!
Old Dec 5, 2006 | 06:52 PM
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http://s8.photobucket.com/albums/a12...100_1278-1.flv
Old Dec 5, 2006 | 06:55 PM
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damn thats some chop! sounds nice!
Old Dec 5, 2006 | 06:55 PM
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and before i get this lol, my idle is supposed to be set at 900park and 875 in drive or nuetral, but it doesnt always work out like that. most of the time it does but sometimes it fluxuates. Maybe the pcm will "learn" more once i drive it a few miles.
Old Dec 5, 2006 | 06:56 PM
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Sounds mean! Where at in Illinois are you located?
Old Dec 5, 2006 | 06:57 PM
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i live in decatur
Old Dec 5, 2006 | 07:04 PM
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Doesn't sound like it's runing too good.

Popping and crap.
Old Dec 5, 2006 | 07:06 PM
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yea im not to sure about the tune, i need to get intouch with ion and see what he says about that, but i am running 42lb injectors. and i didnt realise that they were too big when i got them, should had opted for some 32-36s. Whats wierd is it only backfires like that in the 1-2k range anywhere else it wont do it?

Last edited by Wildwill2855; Dec 5, 2006 at 07:09 PM.
Old Dec 5, 2006 | 07:29 PM
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Looks like you are in need of some valve seals.
Old Dec 5, 2006 | 07:33 PM
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Somethings not quite right.

Looks like idle is set too low or maybe the IAC is maxed out... motor needs more air at the very least. Also why you are seeing no oil pressure... gotta have RPMs to make oil pressure... 500 rpm isnt gonna do it.

Last edited by turbo_Z; Dec 5, 2006 at 07:36 PM.
Old Dec 5, 2006 | 07:37 PM
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yea im going out tomorrow and setting my idle in drive to 950 and in park at 1000 going to see if that smooths the idle out. still lookin at why it backfires just in that one area. does anyone know how to look at tunes ? if so let me know and check mine out and let me know what you think
Old Dec 5, 2006 | 07:41 PM
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Pull up your pants! And where is your coat? You are going to be sick.
Your car looks to be "pig rich" at idle. Those injectors belong on a 500 hp motor. Get some 30# Svo red tops. Dont waste your $ on a mail order tune. Put it twards a dyno tune.
Steve
Old Dec 5, 2006 | 07:43 PM
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Originally Posted by Wildwill2855
yea im going out tomorrow and setting my idle in drive to 950 and in park at 1000 going to see if that smooths the idle out. still lookin at why it backfires just in that one area. does anyone know how to look at tunes ? if so let me know and check mine out and let me know what you think
Ill take a look if you email it to me. Datamaster I hope.



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