AutoRoc

Well...Our local Motown Muscle Car Club( www.motownmuscle.com ) teamed up with Automotive Performance Engineering here in Michigan and had a killer dyno day. A lot of LS1 cars, a couple LS6 Vette's, stock cars, Heads/cam cars, an 03 Cobra, an 89 Turbo T/A, a MAch 1 Stang...etc..

We all had 2 pulls for a decent $50 price on APE's Mustang Dyno so I didn't mess around with N/A Pulls... Weather was roughly 55 degrees, Humidity was low.

Tuned VERY rich with a Nitrous Express setup jetted for 150 HP, my little 305 did as follows:

290 RWHP
375 RWTQ...

HP peaked at 4400 i believe and TQ was at 4000

Stock 305 TPI long block
Stock 700-R4 Trans
Stock Converter
3.73 Gears
1-3/4" SLP Headers and Y pipe
NGK 1 step colder plugs
Accell race wires
3" 2 Chamber 40 series Flowmaster dumped before axle
Edelbrock Performer intake
Holley 600 CFM Vac. Secondary Carb
Nitrous Express Stage 6 Plate Setup
Proform low buck Distributor
Mallory 3 Port regulator controlling carb and Nitrous @ 9 PSI
TBI Air cleaner hacked to fit underhood
4" Home Depot Style Cold air Setup(Actually works GREAT)
Computer still controls guages
Stock fuel pump and lines-Wired to come on with ignition.

I think it's ok for a stock heads/cam..never had the valve covers off kind of setup, right?? There's a lot more in it but I am just glad that it's holding together nicely. Can't be TOO greedy ya know? If we do another dyno day, I think I'll lean it out a little and run an open exhaust, might add a set of 1.6 Crane roller rockers that I've had laying around for a while from the last car....

No track numbers yet but latest "testing" shows that it can put a 13.0 @ 112mph LS1 car to shame on the highway from 40-120 4 cars worth of shame to be exact. Wish me luck, I'm hoping for mid-high 12's!

Black6SpdTA

Good numbers man, torquey motor wow. what hp nitrous kit were you running? you said on a mustang dyno so that means youre numbers would probably a lil higher right?

Duke901

Is that 290hp with nitrous or without.

ICEmanZ

nice... i gotta get myself some NOS

AutoRoc

Thanks guys..Yes that was all with a 150 HP NX Wet shot tuned pretty rich...
It's a stock cam/headed 305, come on..There's no way it would make that on motor alone

AutoRoc

Video can be seen here: http://www.uptain.net/ftp/vids/IROCDynorun.wmv

Black6SpdTA

i dont understand N20 very well but if you were runnin a 150 shot and peaked at 290 would that mean N/A youd only have 140? that doesnt sound right

AutoRoc

Actually if you consider they were rated at 215...and the drivetrain loss with the automatic...and consider that the car has huge headers on it, an extremely rich/safe tune..Timing is retarded a little..It all adds up. On motor alone I bet it would only put down 175 on that same mustang dyno.I'm obviously not getting a full 150 hit because it's getting more than enough fuel. There is a lot more in it with tuning but then things also get closer to the danger zone(corny line huh?)...haha

I'd rather have a safely tuned nitrous setup going 12's(lets hope anyways), than a perfectly tuned car running 14's on motor..Ya know?

Ray86IROC

What did the Turbo T/A dyno at, and do you know his general mods? I've been trying to find a dyno on a Turbo T/A for awhile and I've never come across one. Would love to see one stock vs mild standard (for a turbo car) mods.

What did the stockish LS1s dyno at? Wondering how this particular dyno compares to others. Wouldn't think you'd pull much on LS1s with only 290/375 at the wheels, unless this dyno reads low consistently...

Chris Ja

There are several TT fbodys around here. Depending on how much boost and other mods I have seen from 480RWHP to just over 600RWHP. Like I said there is 6 different TT fbodys around hereI know of. I can't keep up with any of them for now bit I am getting closer.
Denny how is the mods coming. Got all the parts yet?
Mike I would wait and do it all at once.
Jeff you got the ride drivable yet? get the coil overs fixed?
I am hoping to finish mine up this week. If not I don't know when it will get done. I start the treatments this coming Monday so it could be awhile. I wanted to get a few days driving in with around 425 to 450RWHP before starting the treatments. I may have to get one of you guys to take me for a ready once in a while till I get back on my feet. If I get the car done maybe we could take it.

irocz8957

those are damn good numbers for a 305! NICE!

AutoRoc

Hey Ray,
it Jim's Turbo T/A had some problems on the dyno. His first run spiked 23+ PSI so they got out of it. His second run at 18 PSI was very inconsistant and they shut it down before redline. He mentioned a bad O2 sensor because he had 110 leaded in the tank. I believe he just has exhaust mods, ported turbo/intercooler parts and not much more. I guess 's on the verge of 12's with a 13.0X run last year so it's not bad for what it has. Honestly, I was looking forward to seeing some good numbers from him too amongst all of the stockish LS1 cars in attendance that day.

Stockish LS1's all day both vette's and F-Bodies were putting down 285-305RWHP all day. The kid I actually ran put down 308HP/325TQ earlier in the morning that day. He has a lid, exhaust, 6 speed, and maybe ported MAF ends. Not much. He was as suprized as I was and I guess this week he ordered the whole "Bells and whistles" Nitrous Express Wet kit. He plans to hand me my *** ASAP. haha

Chris, Money is still being saved and the more I save, the more options I seem to have(bigger and better obviously). Decisions are being made and I keep asking the pros what a good combo would be. Big small block-wise I mean, based on a big small block It's tempting to buy a crate big block also. Price would be the same in reality! Bill Mitchell Hardcore Race parts has some smokin deals, as do a few other companies!