Hit up a dyno day. I trailered my truck 3 hours each way to get 3 runs in on a dyno dynamics dyno. The owner said it reads 14% lower than a dyno jet. I made 399.6 hp at 6800 rpms thru my th400. I'd gain some more with fine tuning but I ran out of time. I was also on 29 degrees timing and 91 pump gas. Just the way I run it on the street. Enjoy the short vid

http://youtu.be/dA28kDuBw2Q

 

What setup is this again?

 

 

Lq9 with untouched ls3 heads, pistons fly cut .080, ls3 .051 head gaskets, un touched victor jr, pro systems 4150 carb completely redone by me, cam motion cam .621/.629 234/250 112+4 (efi grind I got used), bmp 1-7/8 lt headers, 3" duals with 3" glass paks, prc .660 duals, tsp hardened pushrods, comp trunion upgrade, arp rod bolts, ls2 timing set, melling oil pump, th400, 3600 stall, Hughes flexplate with no spacer, random steel drive shaft, stock rear end with 3.73 gears and a welded rear end haha.

Sorry for the detailed list

All the runs was on 91 pump the afr was at 12.5:1 on my wideband he said and a low ish timing of 32 till the torque dip and then 29 till the redline. I've got the limiter set at 7200 but he only pulled to 6800 due to the tires being shot and shaking on the dyno. It looked like it pretty much peaked and gunna start falling off not long after he stopped. I was hoping it would have passed 400 but it is what it is.
A turbo 5.3 swapped 240sx made 371 hp on 12 lbs with a 70 mm turbo. I'm happy with the numbers tho, and they were shocked. A 300c srt8 with (claimed mods) a cam intake exhaust and a tune made 303 and he was pissed.

 

Sounds like a trash dyno, for the other guys. Yours sounds right if you couldnt even make a redline pull and the TH400 with the converter eating power up. Thats just good for tuning. The track talks.

 

Yeah, everyone (400 whp and up) dynoed about 15% lower than they expected, I just dynoed to shut up all the haters on my truck. They claim the engine makes no power and the truck just seems fast cuz it's light, I ask tem to race and they talk more ****. I tell ya what tho, about 5 minutes worth of sitting after the runs the engine was at 230 still and it showed a loss from first pull to the last due to runnin hot I'd say. I won't take the truck to the track this summer expecting good times tho, I still need a built rear end and a tire

 

Good numbers, just dial in your right foot after launch and you will beast the haters, LS are king bottom line...