dizwiz24

Heres a youtube video of what Im working on tweaking around with now. Ive got it tuned real conservatively (19 degrees max spark advance and 10.5:1 AFR) as I make sure everything is working properly

Thank you to Greg@blowerworks for the tremendous customer service and support.

I est. about 525 rwHp and 475 rwTQ - once I get all tuned correctly.

http://www.youtube.com/watch?v=tCSLx...eature=channel
http://www.youtube.com/watch?v=F1-O_...eature=channel
http://www.youtube.com/watch?v=A9IdbRZgFLM

note: ive since added the following changes since this video.
1. got rid of procharger intercooler since its more a flow restriction (doing so increased boost from 7.5 psi to 10 psi w/ same size pulley)
2. replaced stock 48mm TB with an AS&M monoblade TB.
3. put in a 4 gallon meth tank (in the rear w/ filler next to gas cap) vs. the 1 gallon washer reservoir.
4. added wideband o2 sensor data referencing capability via AC pressure sender
5. Built a bigger air box and had a custom, bigger K&N air filter installed

mod list:

1993 corvette convertible, zf6, 60000 miles
6 point roll bar
P600B @ 10 psi boost (3" diameter pulley)
8 rib custom blowerworks dedicated drive system
Blowerworks ATI 6+8 superdamper harmonic balancer keyed to crank
Blowerworks 'gaseous intercooling' kit (meth kit) w/ pressure solenoid
mildly ported lt1 heads
218/228 @ .050 hotcam kit .525/.525 w/ 1.6 roller rockers
custom 'ram air' supercharger air inlet scoop and airbox
K&N custom 4" long by 5" wide cylindrical air filter.
TPIS long tube headers
60 lb/ hr injectors (no FMU)
walbro 255 l/hr in tankpump with hotwire mod
ostrich w/ blowerworks base tune
MSD 6 BTM
AEM UEGO wideband O2 sensor
Autometer electric boost pressure gage
Autometer electric fuel pressure gage
NGK TR6? gapped at .040
Taylor spark plug wires
Fidanza lightweight aluminum flywheel
SPEC stage III+ clutch
Hurst short throw shifter
Baer 13" eradispeed rotors (front)
Hawk HP + pads
DRM brake bias spring
Earls stainless braided brake lines
1996 corvette grandsport rims (OE)
Kumho V700 P275/45R17 fronts
Kumho V700 P315/35R17 rears
Daniel Stern Bosch e-spec headlights w/ 130 watt high beams.

Note: stock pistons and compression.

My goal is to see if I can make the stock motor last a few years and then build a forged 383 monster w/ ported aftermarket heads. Im even considering adding nitrous too on a window switch. I may spray a small 50 HP shot, at the starting line, and then have it kick off at 4000 RPM. The goal will be to provide starting line torque (to prevent bogs) and cool stuff down before letting the supercharger take over for high RPM stuff.

mnstrlt1

Nice combination. Who is the vendor on the 6-point roll bar?

Dude, if that's a stock bottom-end LT1 I strongly doubt that you're at 525rwhp.

I ran a completely stock LT1 (totally stock internals) with stock exhaust manifold, no intercooling, vortech intake track, 8-rib, 60# injectors, and 9psi... the combination put down 412rwhp on a mustang dyno (ADS of Chandler, AZ). That was with a vortech T-trim head unit (larger than the p600 you've got).

525rwhp ='s 590-620 flywheel horsepower!

When I spoke to Greg (Blowerworks) and even TJ Wong, they said the most powerful (t-trim) c4 they had dyno'ed was a 383 with a healthy cam, AFR heads, no cats, and put down something like 650rwhp.

You've got a good combination man, don't want to be discouraging. But, the heads, cam, stock bottom-end, smaller supecharger just don't add up to 525rwhp.

HighMileage

You only picked up 2.5 lbs by getting rid of the intercooler?
When I spoke to ATI they estimated a 3-4 lb increse by switching to meth. This was with the P1SC not P600B.

I have been considering a larger intercooler and 8 rib setup, was hoping to pick up more than 2.5 lbs.

Also, did you notice any gains with the new throttle body, did you log yyou mass airflow increases?

dizwiz24

other than step up ratio, p1sc and p600b are essentially the same blower.

dont know, my 93 is speed density.

dizwiz24

[QUOTE=mnstrlt1;1575256027]Nice combination. Who is the vendor on the 6-point roll bar?

A guy in streetsboro, oh, did all the work at a decent price ($1k). He put the interior back together around it without butchering things up. [QUOTE]

The only down side, I thought it would add more structural rigidity - around corners than it did.

I'll have to dyno it and see, when I had a slipping belt on my p600b, smaller throttle body, procharger intercooler, and 15 degrees of timing taken out - due to knock retard, I made 441 rwHP and 444 rwTQ. (dynojet) - after 13 prior dyno pulls ! To be honest Im lucky the thing didnt blow up on the dyno due to heat soak (due to 13 prior pulls), high spark advance (26 degrees), and no meth injection at the time!

The mustang dyno's notoriously read 10-15% lower than a dyno jet.

P600b is not a small blower, it has a 1200 cfm output, just like t-trim.
Sure its not a D1-SC (1400 cfm), or the much vaunted vortech YSi / F1-R units, but its not a slouch either. Its only real issue is its crappy 3.10:1 step up ratio requiring a small pulley to make big power.

On the flipside, you will hear less about people blowing supercharger parts all over the place on a p600b. Many people have many thosands (procharger says even 100000+ miles) on the p600b without any issues. Its gotten a reputation as being extremely reliable.

RVY

With 10lbs boost and stock pistons I give you 435rwhp and 12 months of engine life before you start to lose ring lands. Lots of fun at that power level.

mnstrlt1

[QUOTE=dizwiz24;1575257750][QUOTE=mnstrlt1;1575256027]Nice combination. Who is the vendor on the 6-point roll bar?

A guy in streetsboro, oh, did all the work at a decent price ($1k). He put the interior back together around it without butchering things up. I stand corrected, the P600B does flow the same as the P1SC, it's the step-up ratio that I was recalling and I was also confusing the P600B with the smaller Vortech head units (V-1/V-2 s-trim's). However, the step up ratio on the P600B (3.05:1) is an issue that I recall other owners having (belt wrap, belt slip, pulley size restrictions).

Regardless, the numbers that you put down with the previous combination are respectable! that's still 530+ flywheel horsepower! But still, with the minimal changes, you think you jumped 100+flywheel horsepower? If you can, dyno #'s would be awesome!

dizwiz24

I know....I hear this from everybody. Even the parts guys at my local NAPA store...

I think my 1993 lt1 is some magical engine built by magical people. Not a monday or 'friday' built motor. The batches of steel, aluminum pistons, rods, and crank tested +15% higher then spec when they did an instron test on those steel lot samples, etc.. etc.. etc...

Actually the only thing I hope is that if it does go, it doesnt destroy my block....

I dont know if 4 bolt main lt1's are easy to come by...

mnstrlt1

Even though this is pushing the limits, I truly believe that a solid tune with allow the engine to last longer than typically expected. Not to mention your driving habbits. I didn't even go past 2,500-3,000rpm with my old (stock bottom-end) combination.

BrianCunningham

yyCorvetteyy

Any updates or new videos? Just curious how its been running, I dream of charging my 96 one day.

Kevin

simple green

Very cool, I'd like to hear more about the wideband data through the AC signal.

dizwiz24

Works perfectly. Hook up the analog input of your wideband gage to the ac press sensor input which is also 0 to 5 volt input.

Dataloggting software usually logs ac press psi so you get wideband afr in terms of ac psi. You use a conversion factor (linear) to convert to afr

dizwiz24

Ill try to put something together. I did the following mods this winter;

Banski rod end rear suspension parts
dynomax lt1 corvette mufflers
Heim joint swaybar end links


The supercharger adds a great punch (esp top end) that makes it a real blast to drive

lisoundsvette

496 rwhp 540 tq..........10.96 in the 1/4 mile @ 124mph







MOTOR CHEVROLET LT-1 STROKED TO 383 cu.in
.
POWER ADDER VORTECH S-TRIM V-1 SUPERCHARGER W/ 2.87 6 RIB PULLEY
.

AIR INTAKE TUBE MODIFIED BY BLOWER WORKS
.
INTERCOOLING BLOWERWORKS GASESOUS INTERCOOLING 50% METHONOL
10 GPH JET

CRANKSHAFT EAGLE 4340 FORGED STEEL. 3.75 STROKE

RODS EAGLE 6 inch ESP 4340 FORGED STEEL W/ FLOATING PINS

PISTONS JE FORGED / DISHED .030 OVER BORE SPEED PRO RINGS
COMPRESSION RATIO 9.5:1

CAMSHAFT COMP CAM LT-1 276 HR 14 220/230 @ . 050 540 LIFT
LOBE SEPARATION 114.0 GM 1.6 ROLLER ROCKERS
.
SPRINGS AIRFLOW RESEARCH # 8017

HEADS GM LT-1 PORT MATCHED & POLISHED BLEND IN SHORT
TURNS & BOWLS FLOWED 237.3 / 159 @ .550 LIFT

VALVES MANLEY 1.94 /1.50 STAINLESS RACE FLOW HP VALVES

THOTTLEBODY BBK/EDELBROCK 52 MM

INTAKE LT-4 INTAKE PORTED & GASKET MATCHED

IGNITION CRANE HI-6TR MSD IGNITION COIL MSD 8.5 MM WIRES

PLUGS NGK IRIDIUM TR7IX GAPED @ .040

FUEL SYSTEM WALBRO GSS340M 255L/HR @ 43.5 LBS FEEDING
WALBROGSL-392 IN-LINE BOOSTER PUMP

INJECTORS FMS 42 LBS/HR

EXHAUST TPIS 1 ¾ LONG TUBE HEADER, 3inch EXHAUST W/ X PIPE
DYNAFLOW MUFFLERS

TRANSMISSION 4L60E PTS SYSTEM BY LEVEL 10
2600 RPM 9 ½ INCH STALL SPEED CONVERTOR

REAR DANA 44 W/ 3:54 RATIO

SUSPENSION BILSTEIN Z-51 GAS SHOCKS UPGRADED REAR SPRING






car is for sale!!

yyCorvetteyy

Sweet SC C4 guys would love to see more vids

Lemme

I have been thinking about a similar setup. What do you mean by window switch and how will the NOS shut off at 4000 rpm? I was thinking about just having a push button on the steeing wheel that I could release a few seconds off the start line.

jsiddall

A window switch is an RPM based controller. It can be setup to only spray nitrous over a given RPM range. It would automatically shut off the spray at a pre-determined RPM so you don't have to. Using that instead of a manual pushbutton will increase consistency.

lucster

nice rides!