1 F8L Z

I dyno 439rwhp and 400tq on a mustang dyno. and here is my setup... Did I dyno okay or could I do better... Motor was built to run nitrous but Im gonna go N/A for alittle while...

398 Ci .40 overbore LT4 Block 11:1 compression
Decked/Honed
AFR 220 Heads with 290 intake 207 exc flow
Lunati Nitrous Pistons, 4340 Crank, 6" Rods, Chromolly Rings
ATI Balancer
AFR Hydra Rev Kit
LT4 Intake match ported
Crane Gold 1.6 adj. RR
upgraded lifters
242/248 @ 112 LSA Cam 575/600 lift
Chromolly Pushrods
Upgraded springs to match cam
Canton 8qt Oil pan
High Volume Oil Pump/pickup
walbro fuel pump
Hooker LT Headers
cutout
10 bolt 373
K & N cold air intake kit
SVO 30lbs
Still on the stock 48mm TB
electric water pump..

lt197formula

iTrader: (6)

I would have gone slightly more compression, custom cam, and damn man get a 58 mm tb. But for a mustang dyno i dont think those are bad numbers, that stock tb has to be holdin you back around 10-15 hp is my guess.

Honda Hunter

iTrader: (8)

I would think that setup would be in the mid to high 400's but it may just be the dyno. Seems like a awesome setup eitherway.

blkchevyz

auto or 6 speed?
sounds like a pretty tough motor, not sure on the numbers mustang dyno's are useally a little low compared to dynojets.
couple thing you will need to address sooner or later is the injectors are a little small for the engine, like said before the throttle body, and of course the rear end. with that much power your going to be blowing ring gears, and breakin axles left and right.

vin1382

Mustang dyno shortchanged me 50 rwhp with the same exact mods compared to a dynojet.

Azthrei

I'm very interested about this one as well. I've got a 396 LT4 setup, with the larger AFR heads, and a more aggressive cam then yours, it should be dyno'ing next week on a mustand dyno as well to break it in. I do have the AS&M monoblade TB, 42lb injectors, and all the supporting mods as well. I'm just hoping to get anywhere around that at this altitude, SLC utah, and more on a dynojet.

ze doktor

i would think that set up would want a bigger tb than stock

-PEPE-

iTrader: (10)

Nice setup first off, yes you definitely need a bigger TB, but I would est with your cam somewhere in the mid 400+ range and definitely in the 11s.

1 F8L Z

yea the setup is very nice but the only reason I havent change the TB is $$$ I ran out The intake is bored out for a 58mm so I will change that and my tuner said I would be fine with 30 SVO cuz I was goin to buy 42lbs but he said you;ll be fine... But next on my list is 58mm.. I think is did pretty good overall and the car is a AUTO with a small stall.. So I need to change that also... Next on my list to buy is a 3000 stall and 58mm.. I hopefully goin to the track soon and see what kind of time I put...