dlc1609

iTrader: (20)

We just dynoed the car I sold here https://ls1tech.com/forums/texas-members/878615-fs-98-camaro-z28-m6-vert-racecar.html (has more detailed motor specs on that page) yesterday. Sorry no graph as the new owner has it.

It made:
503rwhp
459rwtq (uncorrected)

498rwhp
457rwtq (corrected)

All of this was on HPP's Dynojet in Lewisville.

Engine is a:
383ci aluminum block
4" Stroke 3.905? bore
Diamond Flat top pistons, nitrous gapped total seal rings
G5x4 Cam
Wells Racing engines built the short block.
243's hand ported (numbers around 295-300 @ .600, with good mid numbers)
Stock, unported Fast 90/90
Pacesetter LT's going into offroad y-pipe, dumped under rear seat (still just 3.5" at y)
Stock air filter

A/F was around 12.5, so still a little rich. More power to still be found using a ported Fast, larger exhaust at the y-pipe, and leaning the tune a little more.

With a 150shot, we kept running out of fuel (they are fixing the problem today), but before they shut it off, it was up to 644rwhp each time and climbing.

Sharpe

iTrader: (7)

Sounds like fun!

dlc1609

iTrader: (20)

The car used to have the same top end, but was just stock cubes. It now feels as strong on motor as it used to with the stock cubed setup on the bottle!!! The mid range torque gained alot!

PewterScreaminMach

iTrader: (7)

Very nice. It would be cool to see a layover graph of the two setups, one with the 346 and one with the 383 without changing much else.

dlc1609

iTrader: (20)

That would be cool, but I never had it dynoed with the top end on the 346. I'm sure we can get the graph of the 383 up soon though!

xstore

really nice numbers they fix the problem with the fuel pump an with nos got 633 rwhp

D-Webz

iTrader: (4)

damn those are some nice numbers

venom ws7

iTrader: (13)

Great numbers TQ Is awesome too.

Black FormulaLs1

iTrader: (10)

damn nic enumbers..how much did it cost to do the short block?

allngn_c5

iTrader: (3)

Midrange power is where it at brother !!! Congrats.

dlc1609

iTrader: (20)

I bet you left there a little rich after the fuel system upgrade... With some tweaking the on the bottle numbers should go 660rwhp+, I would guess....
That's not to mention the power to be gained the in intake, exhaust and tune.

Yeah, this thing pulls through the mid range like nothing I've ever ridden in. (Never ridden in a 408ci or anything bigger, but compared to stock cubes, it's not even comparable!)

Car also got 21mpg on the way home for the new owner!

98camaroLS1M6

iTrader: (35)

Great power/tq!!! Congrats!

xstore

Its amazing the mpg that you can get for that kind of power after some upgrades its for sure to get 660 rwhp starting with a k&n air filter true duals another tune