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

XE230/236 114LSA Dyno numbers

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Old Oct 8, 2003 | 09:12 PM
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XE230/236 114LSA Dyno numbers

Well, the car felt soggy down low and I knew it. I was running my previous tune from last year (which had an A/F of 12.2-13.0).

My first run (fuel psi @ 55) I pulled 368rwhp and 335rwtq. That is a 17rwhp and -5rwtq gain from the homeported heads and shorties. Here is the kicker, my A/F with old program was 10.0 across the board this time! It was off the chart!

I was using datamaster to record data. I was running 42 degrees spark advance. I decided to adjust the AFPR despite what everyone says about the computer controlling the A/F.

I ended up getting the A/F to 12.5-13.0 and cranked the numbers up to 384rwhp and 350rwtq. I ended up tweaking alittle more and got 383rwhp and 353rwtq.

Here is the kicker. I picked up 100 rpm in hp (peaked at 6k compared to 5900rpm before) and the peak torque peaked at 5400rpm instead of 4800rpm before! The torque curve is flat and fat. I have 343rwtq from 4300-5800rpm, and at 6k I still have 335rwtq! I have 300rwtq @ 2400rpm and it slowly climbs. All in all I picked up 17rwhp and 18rwtq peak over the first pull just by playing with A/F.

So, final numbers are 383rwhp @ 6000rpm/353rwtq @ 5400rpm.

Last edited by RealQuick; Oct 8, 2003 at 09:25 PM.
Old Oct 8, 2003 | 09:23 PM
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Nice numbers!!!!
Old Oct 8, 2003 | 09:26 PM
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who did your heads.
Old Oct 8, 2003 | 09:28 PM
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Originally posted by NiteRider
Nice numbers!!!!
Thanks dude. Now, do I have to worry about the computer fuggin up my A/F (relearning)
Old Oct 8, 2003 | 09:34 PM
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Originally posted by 97Z-M6
who did your heads.
Lloyd Elliott
Old Oct 8, 2003 | 09:34 PM
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So tell me how badly did your HP numbers dropped after 6k? What were you making at 6500+ rpm?
Old Oct 8, 2003 | 09:36 PM
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my car setup will be about the same as yours....how is the daily driveability of it?

How much and how do i get in touch with Lloyd, regarding porting of the heads.
Old Oct 8, 2003 | 09:40 PM
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Originally posted by NiteRider
So tell me how badly did your HP numbers dropped after 6k? What were you making at 6500+ rpm?
Well, I got off of it at 6200rpm and the hp was 375rwhp/318rwtq.
Old Oct 8, 2003 | 09:42 PM
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Originally posted by Aeromaks
my car setup will be about the same as yours....how is the daily driveability of it?

How much and how do i get in touch with Lloyd, regarding porting of the heads.
Now that I leaned it out, it drives perfect. Crisp smooth throttle response and very little cam sure. There is a little surge @ 1200rpm or so.

The port job I got from Lloyd (nighttrain66@msn.com) should cost well under 1000 bucks. I dont know how much his prices are now, but around 700 should be close. Best bang for the buck head.
Old Oct 8, 2003 | 09:43 PM
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Originally posted by RealQuick
Well, I got off of it at 6200rpm and the hp was 375rwhp/318rwtq.
Yeah, after that it get's pretty ugly with XE cam, IMO.
Old Oct 8, 2003 | 09:46 PM
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Originally posted by NiteRider
Yeah, after that it get's pretty ugly with XE cam, IMO.
I didnt dare to find out
Old Oct 8, 2003 | 09:47 PM
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Well on my setup I was making 163.6 @ 6600 and 130.2 rwtq
Old Oct 8, 2003 | 09:58 PM
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Originally posted by RealQuick
Lloyd Elliott
thats good to know. i was thinking about getting him to do a set for me.
Old Oct 8, 2003 | 10:29 PM
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Just curious, I might have missed it, but were the numbers SAE or STD?
Old Oct 8, 2003 | 11:15 PM
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Originally posted by NiteRider
Well on my setup I was making 163.6 @ 6600 and 130.2 rwtq
that doesnt sound right at all, dude. me thinks you gots problems elsewhere.
jeremy



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