New Dyno numbers, new tune.
10-18-2013, 02:34 PM
#1
New Dyno numbers, new tune. Just got off the phone with the tuner:
383, forged, splayed, 10.8:1 compression, pacesetter longtubes, full 3" exhaust. ported intake, AFR 210 heads, GM847 cam. Built A4, stock rear end gearing. Stock ignition, Ligenfelter CAI.
Mustang Dyno:
357.1HP and 415Ftlbs of torque. I'm taking it to the track tomorrow AM, if the weather holds
383, forged, splayed, 10.8:1 compression, pacesetter longtubes, full 3" exhaust. ported intake, AFR 210 heads, GM847 cam. Built A4, stock rear end gearing. Stock ignition, Ligenfelter CAI.
Mustang Dyno:
357.1HP and 415Ftlbs of torque. I'm taking it to the track tomorrow AM, if the weather holds
10-18-2013, 09:57 PM
#5
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10-18-2013, 10:43 PM
#6
OK baseline on same dyno was 344.9hp at 6201rpms and 387.5ftlbs. The dynojet it was on prior to the baseline was lower. Final peak HP was 357.2hp at 6251rpms, and 415.4ftlbs of torque.
The surging at low throttle is GONE, car drives very nice. These numbers were through an A4, stock auto gears and a PTC 3600 stall. Converter was locked, and this is on a mustang dyno. I'll get the sheets up asap.
The surging at low throttle is GONE, car drives very nice. These numbers were through an A4, stock auto gears and a PTC 3600 stall. Converter was locked, and this is on a mustang dyno. I'll get the sheets up asap.
10-19-2013, 06:21 AM
#7
Do the numbers cross at 5250? That just doesn't seem right to have torque that high and then have it plummet to just 308 lb ft at your hp peak unless your hp curve is FLAT. And to have that big *** cam peak so low, did you try going to 7000?
Last edited by bufmatmuslepants; 10-19-2013 at 06:27 AM.
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10-19-2013, 06:10 PM
#10
Yeah, I thought she was a revver too. The 847 was really popular back in the mid 2000 years and allot of guys were running out then and it was rev happy but I think I remember it making 360-370rwhp then in cam only cars. I bought one of the combination MOTORSPORTS cams back in the fast and ours still in my car but hell I shift at 6700 with it.
10-19-2013, 07:17 PM
#11
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OK baseline on same dyno was 344.9hp at 6201rpms and 387.5ftlbs. The dynojet it was on prior to the baseline was lower. Final peak HP was 357.2hp at 6251rpms, and 415.4ftlbs of torque.
The surging at low throttle is GONE, car drives very nice. These numbers were through an A4, stock auto gears and a PTC 3600 stall. Converter was locked, and this is on a mustang dyno. I'll get the sheets up asap.
The surging at low throttle is GONE, car drives very nice. These numbers were through an A4, stock auto gears and a PTC 3600 stall. Converter was locked, and this is on a mustang dyno. I'll get the sheets up asap.
10-19-2013, 08:08 PM
#12
Being more specific on what is done & what parts are on the motor are crucial to figuring out why your numbers are low with such easy high HP top end + 383 bottom end. Havent seen anything yet but something is off. Maybe your floating the valves, timing is off, Air Fuel Ratio, or the fact that your compression is stock LT4’s. 357rwhp sounds way too low for AFR 210 heads and a 234/242 .575/.595. There are a few cam only LTx’s that break 357rwhp with a GM847. Talk to your tuner & builder again. I think a custom cam would of been a better option.
10-19-2013, 11:28 PM
#15
Sorry if the pics aren't great...
I wanted something easy to tune, and easy to fuel. The compression is lower than I'd like. The builder picked out pistons. The gasket is a very thin cometic mls set that I had made. Quench is right around .032.
I wanted something easy to tune, and easy to fuel. The compression is lower than I'd like. The builder picked out pistons. The gasket is a very thin cometic mls set that I had made. Quench is right around .032.
10-20-2013, 07:22 AM
#17
357 through an auto on a mustang dyno is not a problem. Not only do stalled autos hate the dyno, but mustang dynos can read ~10-12% lower then a standard dynojet. That motor through a 6sp on a dynojet could be anywhere from 420-450rwhp.
His numbers are fine. The high TQ is the stall converter flashing.
His numbers are fine. The high TQ is the stall converter flashing.
10-20-2013, 10:31 AM
#18
Puck, these numbers were with the converter locked though..... AFAIK, there wasn't any knock retard. Headers are definitely not touching anything. Fuel was 91 octane premium, no corn. I saw that dip, and thought it was odd too. I had it at the track yesterday, and it did a 13.2 at 104. It definitely had more in it. I had to get out of it each time when shifting into second, it wouldnt shift until I lifted. Probly the tune there..... But it leaves like a goddamn freight train. This was my first time on MT ET Streets, and it hooked like a mother! Best 60 foot was a 1.81.
