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

218/224

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Old Aug 13, 2003 | 12:53 AM
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94formulabz's Avatar
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218/224

Have a virtual beer with me, cheers.

The 218/224 is done.

Took me ~ 6 +12 +8 +3 = 29 hours including installing the CSI, but not including gathering supplys.

I haven't wired up the final waring ciruct on the CSI, but i'm sure my eyes will be glued to the gauges for the next week anyways.

It started right up, but takes ahwile to settle into it's idle.
http://www.personal.psu.edu/users/b/...4.111.idle.MPG

That isn't the actual inital startup, but.
It took awhile fo rit to settle into it's idle. I thought it would be slightly more choppy, but i still really like it. It runs very well on the stock programming. I haven't romped on it yet, but ther are no Ill manners and still great low end torque.

I'm gonna get it dyno tuned ater some more break-in. A track trip too.

I still have to clean up al the tools and that crap
Old Aug 13, 2003 | 01:06 AM
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Congratulations on the install! I think you will love that cam makes great power and is still a very driveable car. The first time I took mine out to the track after the cam, heads, and headers first pass in 1.8th mile was 8.2 at almost 89mph and managed to get a 7.9 at 90 before the night was over. Great cam I love it. That was back in January so the air was definately in my favor.
Old Aug 13, 2003 | 05:53 AM
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That same cam went into my car this past weekend. I am anxious to see how it runs. I'm a few more weeks away from firing it up due to a couple other issues. Does it sound stock? (I tried to DL the mpg but my computer rides the little yellow bus)You should bring it down here so I can check it out. We could BS about the wiring also.
Old Aug 13, 2003 | 05:58 AM
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wow, listening to it its kind of hard to tell there is even an aftermarket cam in there
sounds good tho!

Last edited by simple; Aug 13, 2003 at 06:14 AM.
Old Aug 13, 2003 | 06:00 AM
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Congrats.Good job.
Old Aug 13, 2003 | 06:23 AM
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Nice job. I love the idling sound that gives. Beautiful man. - Downs a Zima. . .stares at all the eyes. - . . .what?
Old Aug 13, 2003 | 08:24 AM
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Originally posted by simple
wow, listening to it its kind of hard to tell there is even an aftermarket cam in there
sounds good tho!
Here is what it was before the cam.
http://www.personal.psu.edu/users/b/...tartSmlrev.MPG

It definitly made a difference, but your right that it's not a dead giveaway. Some people might just think that is the freer flowing exhaust. Now here's a real cam:

http://www.personal.psu.edu/users/b/...st/383idle.mpg

After i changed the oil i took it out for another spin. Still keeping below 2500. It started running just slightly rougher under light load, shaking a lil more at idle, and making some valve noise. I guess a rocker came loose. :MAD:I think it was valve noise clack and not a knock or something! The oil pressure was still very good so hopefully it's not a bearing or something and just a rocker came loose. I guess i'd better check all of the rockers. This right after i put back on the PITA slp egr (it's blocked but there to look good lol) which needs to come back off to get to the valve cover. It was 3AM at that point and i was sloppy drunk with sleepyness so thats why i'm not even sure what the sound was. I had to ghetto repair a sparkplug wire end fitting, but since it ran smooth at first I don't think thats it.
Old Aug 13, 2003 | 09:01 AM
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Congrats man, it sounds good. It sure is fun putting a cam in one of these cars isn't it? Are you going to have Bryan tune it for you? My car ran much smoother after his programming.
Old Aug 13, 2003 | 09:07 AM
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Yeah, I'm going to have bryan dynotune it in the next couple weeks. I figure i want t dyno to see what i picked up from the exhuast and cam, and since it will stay like this for quite some time i might as well have it dialed in. He's going to load a new program for me on thursday. I'm going to say something to him about leaving the idle alone. It sounds perfect now, i don't want it smoothed out. It's just a nice sound, but not a built strip monster sound that i can't back up with results, perfect IMO. I was actually really surprised how well it ran on the stock tune, before for this loose (hopefully) rocker. Then again everyone does call this a 'baby cam'. Hopefully it's no baby on the dyno though.
Old Aug 13, 2003 | 09:23 AM
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When I say his tuning smoothed things out, it didn't really change the sound of the car at all, the biggest thing I noticed from it was how the car would return to idle when coming to a stop. Before his tuning it used to hang around 2000rpm for 3-5 seconds after I came to a stop with it out of gear which was pretty annoying. He did something to get rid of that problem. I really didn't drive it hard for the first week I had the cam in while I was breaking it in, I had him program it that same week so I didn't really notice a big performance increase. I started beating on it again right after his tuning The specs on that sound pretty similar to the hotcam, I'm very pleased with the results I've gotten so far from this little cam

Do you ever run yours at Maple Grove or Cecil? I'm at Maple Grove a lot on Friday nights, I'm going to Cecil this Sat for their t&t day, you should bring her down and see what she'll do now

Last edited by GREGG 97Z; Aug 13, 2003 at 09:28 AM.
Old Aug 13, 2003 | 09:45 AM
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I ran at maple on that pontiac only sunday ~2wks ago. Sorry you weren't invited, haha. It was in the 90s, 2100-2400 DA for the day. I pulled out a 13.2@106 on a 1.95. I wanted to go back at night for a 12 sec slip precam, but i decided to get the cam in.

I think my cousin and I are going to go the 29th before we leave for school. I wanna give it some time and switch back to synthetic before i get crazy on it. Hopefully bryan can find time to dyno tune it sometime that week.

-brent
Old Aug 13, 2003 | 09:51 AM
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Originally posted by GREGG 97Z
When I say his tuning smoothed things out, it didn't really change the sound of the car at all,
Cool, I've heard some other people comment that good tuning took some of the lope out. I didn';t really understand how that could make much of a differrence unless your original tune was really really bad. I actually mgiht have him drop it down 50-100 rpms if the oil pressure is still good and throttle response is there, he he. From what i remember your car sounds a lil meaner than mine due to the increased advertised duration but same .05 duration.

I think it definitly made my exhaust a lil tinny/raspy at med throttle mid 2k rpms, maybe i need a second bullet jk i'll deal with it. I think i'll put the cat in anyways after the tune and track.
Old Aug 13, 2003 | 10:01 AM
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Yeah, it's tough getting into the 12's without a cam or rr's, I finally made a couple 12.9x runs last November in some real good weather before doing the cam. I should be there on the 29th, we'll have to line up for a few runs
Old Aug 13, 2003 | 01:25 PM
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Do you have any dyno numbers before cam install? To see if you pick up h.p. For me i pick up 34 h.p. after the cam install untuned.
By the way it sounds good.

Vinny
Old Aug 13, 2003 | 08:49 PM
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Originally posted by Fuels94TA
Do you have any dyno numbers before cam install? To see if you pick up h.p. For me i pick up 34 h.p. after the cam install untuned.
By the way it sounds good.

Vinny
I have dyno and track numbers from before my exhaust. With my exhaust i have good runs with identical 60' times and the DA adjustment written down. So technically no, but but i'm comfortable with the track times and headers/cam/waterpump as one big gain when comparing dynos. I would have loved to dyno it inbetween though. Daynm, 34 HP sounds GREAT to me, i was only hoping for 20!


*edit- thanks, i'm happy withthe sound too.

-brent

Last edited by 94formulabz; Aug 13, 2003 at 08:52 PM.



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