Dyno results - with Thumper heads

Before anyone reads this entire post and is disappointed, I want to say this is not a "before and after" Thumper head installation comparison. The car's current mods are:

146k mile stock 1991 shortblock
Thumper E7s
Bennett custom cam (nitrous grind)
1.7RR's
Performer RPM intake
BBK 70mm TB/EGR
Pro-M 75mm Bullet
K&N panel filter (stock airbox)
24lb injectors
pulleys
255lph fuel pump
Kirban afpr
MSD 6AL
MSD Blaster 2 coil
MSD wires
BBK u/e shorty headers
o/r H-pipe
Dynomax mufflers
3.73s
NX shark nozzle wet kit

This is all in a 1991 LX hatch AOD car.
Bone stock down to the air filter and cats with 139k miles, this car put down 184.4rwhp corrected (I can't remember the torque).

With all the above mods the car made: (all numbers are corrected)
N/A
250.9 rwhp 332.7 ft/lbs (with nitrous tune - 10* timing, higher fuel pressure)
263.8 rwhp 328.1 ft/lbs (good N/A tune - 16* timing, correct fuel pressure)

NX 150 shot
393.0 rwhp 509.5 ft/lbs

NX 175 shot
428.3 rwhp 566.7 ft/lbs

The car is my full weight (nothing removed except the front sway bar) daily driver with the a/c still on it. With no changes other than a set of 26x8 MT ET Drags, the car went 11.65 @ 115.8mph on the 175 shot (any other 60' time from the night would have given me an 11.5x) and 11.87 @ 115.8mph on the 150 shot. I was told the NX kit wouldn't go higher than 150 shot. Since it worked on the dyno, I tried it. It gained over 1.5mph in the 1/8th, but trapped the same in the 1/4 after it fell on it's face from lack of nitrous flow. Overall, I'm pretty happy with 11s in my daily driven bolt-on car with ported E7s.

ponyboy19 said:

very nice #'s.. and that's through an AOD. what converter are you running in it.. how high are you reving it and are you shifting manually with the 1-D-1 shuffle or on it's own.. let's here the details of your set up. can you give some detail on your cam or at least ball park lift, duration, LS. thanks.

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It's an Art Carr Extreme AOD with no manual valvebody or transbrake. I just stick it in "D" and floor it. It has a 3k stall convertor so I'm sure that may suck a little of the dyno numbers down. I launch from idle and flash the convertor. It shifts itself just short of the limiter. I think right around 6k but I have a stock tach and I don't trust it anyway.

I also forgot to list the car has Lakewood struts and shocks. This and tires are my only suspension mods. It still has stock UCAs, LCAs, no welded axle tubes or torque boxes. The car has been a 1.63 60' on a 12.30 @ 98mph pass when it ran out of gear with 4.10s. The car averages mid-1.6s. My 11.65 pass was a horrible 1.76 though. These Lakewoods are worth their weight in gold to me. Best bang for the buck I've spent. It does ride a little rougher though, but it's nothing I can't get over.

The Bennett cam is 218/224 @ .050, 112 lobe sep. and about all the lift you can get from a stock non-piston notched bottom end and stock valve size. It's not too big.

With the cam, the car actually responds better on the nitrous than most other Mustangs I've seen. N/A I made 5 passes all within .09. They were in the 13.4-13.5 range. But this was on the nitrous tune with it running rich and on 10* timing. So it might go a little quicker all out, but I leave it set like that so that's how I wanted to see it run. It loves the nitrous. The Bennett cam was probabyl my second best mod.

tmoss said:

I'd love to see your dyno curve - can you post it?

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I don't have the stuff nor the computer knowledge if I did to post it. So I'll tell you about it.

N/A
The graph starts at ~3500rpm with the hp 220rwhp, peaks at 263.8 at ~5600rpm and holds it flat until the chart stops at 6100rpm.
The torque peaks where the graph starts at ~3500rpm with 328.1 ft/lbs and falls in a perfect diagonal line (no curve) to ~230 ft/lbs @ 6100rpm.

The N/A graph is actually pretty flat compared to about everything I've seen.

Nitrous
The graph starts at ~3800rpm with 566.7 ft/lbs and falls in a perfect line to ~320 ft/lbs at 6200rpm.
The hp starts ~420hp at 3900rpm and peaks at with 428.3rwhp at ~4100rpm (what the heck is that all about?) and falls to about 380rwhp at ~6200rpm. That's not a curve, that's a table top.