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

The 224/230 is finally in and running.. initial impressions and questions.. :)

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Old Apr 14, 2003 | 11:40 PM
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Thumbs up The 224/230 is finally in and running.. initial impressions and questions.. :)

Oh man what a pain in the *** to install..... but it's all in and things are pretty good.

The car feels good.. I really didn't want to take it up WOT tonight, even though I know there's no break in, it feels weird to abuse it so fast hehe.. I did take it on a 10-90 MPH run at almost WOT and it feels real good. My friend with an LT1 formula that was there to help me finish up today was very impressed with it.. I'm looking forward to seeing the results. It winds out to 6200 and feels like it's still pulling, I think I may have the shift point set to early, but we'll see. I think I'm happy with it lol.. just need results, alot of work and I'm really tired.

I also have an SES light that goes on when the car just idles.. if I reset the PCM and drive around town, no SES.. as soon as I let it idle for a few minutes, the light pops up and doesn't go away. I'm kinda confused.

Also, how much valvetrain noise should I expect from the Pro Mag full roller RR's? sounds sorta loud.. but I'm not sure what to expect... I tightened them using the method where you bring #1 to TDC and do 8 of the valves.. then I brought it to #6 and did the other 8.. read that in the Chilton's and on Shoebox's site.

I also have an exhaust leak at the collector gaskets, so I'm sure that's amplifying noise..

I will say, she has a mean idle
Old Apr 14, 2003 | 11:44 PM
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It's kind of hard to describe what "too loud" is on a messageboard The ProMags will tick a bit but shouldn't make a racket.

The best way to find out what the SES is, is to get it scanned. Quite possibly the misfire code. OBDII doesn't like lopey cams very much from what I hear Hopefully the exhaust leak isn't messing with your O2 readings.
Old Apr 14, 2003 | 11:50 PM
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Hard to say.. I know alot of guys run around w/ OBD2 and a cam in here don't they? The idle is decently smooth when in Park, which is where it happens... a little frustrating, but like you said, I'll need to get it scanned.. somehow I guess, gonna try to get my hands on an autotap sometime this week.

Like you said, tough to describe rocker noise on the 'net.. i know they're going to tick, I don't hear "racket" though
Old Apr 14, 2003 | 11:56 PM
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are you gonna run a stock program with that cam?

btw i hate flood control
Old Apr 15, 2003 | 12:01 AM
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Forgot to have mentioned I have a PCMforless tune in the car for the cam.. seems to be working well.
Old Apr 15, 2003 | 12:10 AM
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10 bucks says the code is a P0300 or random misfire code. For some reason alot of OBD2 guys get this code once a bigger cam goes in....especially if you have an A4.

I wouldnt be alarmed....I searched for a miss, logged data, etc and couldnt find a miss. It just pops up for some reason...
Old Apr 15, 2003 | 12:12 AM
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Non SA rockers are noisy compared to SA. Exaust leak could cause a false lean condition, one of many possible SES light causes.
Old Apr 15, 2003 | 12:14 AM
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Originally posted by 96z
It just pops up for some reason...
OBDII monitors crankshaft speed. It detects misfires by watching the crankshaft speed up and slow down between each cylinder's firing event. If it notices that the crank doesn't accelerate as it thinks it should after a cylinder is supposed to have fired, it assumes that there was a misfire. Once you realize this it's pretty obvious why lope confuses OBDII
Old Apr 15, 2003 | 12:17 AM
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hrm.. so if I have the CPS disabled in the PCM would the SES go away?
Old Apr 15, 2003 | 12:18 AM
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Yeah like everyone else said probably a misfire code. I got it with my smaller cam. Have Bryan disable the DTC would be the best option. Also mine threw the EGR code p0400 as well because the stock manifold pressures no longer apply with the new cam. The computer looks at preset map pressures to verify the egr opens and closes which will be wrong now. Good luck sounds like a nice ride.
Old Apr 15, 2003 | 12:22 AM
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You can have it disabled however you won't pass the new OBDII emissions test after that. May or may not apply to you now or in the future. I'm out in the sticks and don't have to worry about that sort of thing Although I still run cats and EGR
Old Apr 15, 2003 | 12:35 AM
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Buttercup.. same here, out in the sticks, no cats, nothing of the sort.. if I have to pass emissions I'm screwed.. but there's no testing around here.

Hey, can you check out this post.. it has me VERY concerned right now..

http://web.camaross.com/forums/showt...hreadid=107417
Old Apr 15, 2003 | 12:44 AM
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I doubt there is anything to worry about there. I know others may disagree but I changed my cam with less than 13k on the clock and I stayed with the original timing chain and gears little to no wear on the chain. Have put around 1000 miles on the car since the cam/head swap and knock on wood no problems yet.
Old Apr 15, 2003 | 10:06 AM
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Originally posted by Buttercup
OBDII monitors crankshaft speed. It detects misfires by watching the crankshaft speed up and slow down between each cylinder's firing event. If it notices that the crank doesn't accelerate as it thinks it should after a cylinder is supposed to have fired, it assumes that there was a misfire. Once you realize this it's pretty obvious why lope confuses OBDII
Oh I new all of that. I was just refering to the fact it "pops up" when no real problem is present.

Javier like buttercup said you wont be able to pass emission testing b/c you still will have an SES stored in the PCM even though it wont light up on your dash. I had to altogether get rid my CPS with my double roller timing chain. If figured if all the pre 96 cars didnt need it. Mine didnt either....I also can pass inspection though.
Old May 3, 2003 | 03:07 PM
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Originally posted by 96z
10 bucks says the code is a P0300 or random misfire code.
Guess you get $10 b/c that's what it finally was

This code won't make the PCM pull timing will it? The car still feels like it's running fine.. (checked the rockers again the other day just to make sure everything looked cool)..

so it looks like it's a go for finally getting some times tomorrow



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