dyno numbers / upgrades done

[aafc]

1990 white/black with 116xxx miles
368 with stage one cams by SGC 444.9 rwhp and 418.7 rwtq
SGC 368 package 550 hp.
transmission 4l80E with 2.75 1st 1.57 2nd 1.1 3rd .75 4th
rear end gears 3.73
best run this year 2012 11.69 @120.56 with drag radials
on street tires 11.88 @ 117.67
can be veiwed at SGC gathering this Nov. 2012.

John Becker
one of a few auto (4l80E) eq. ZR-1's
member # 0115

[Blue Flame Restorations]

Before it's latest rehab with Pete...63 mm TB, ported heads and upper end. New re-grind cams.

BEFORE
410 rwhp
359 trq

AFTER????
Now has Pete's cams and pulls 500+++hp or so at the crank. Pete did a good job.

Need to get a new dyno check.

[gbmidyear66]

392 RWHP
375 TQ

Top end Port (Gaffigan Plenum+IH, Haibeck TB), Flowmaster Exhaust, Custom Tune, 4.10's

354 RWHP before top end Port

[batchman]

Clearly I need to port the top of the 91. At 77k or so:

335rwhp, will edit when I fish up the torque.

Watson headers, open lid with K&N, mish-mosh exhaust with a small "H", some randomly sourced cats (as opposed to Random) and a Borla last stage.

DRM chip was worth about 10 of those rwhps. Looking forward to ditching the secondaries and getting a catch can on the darn PCV stuff. And an aluminum flywheel, underdrives etc etc etc.

Cheers,
- Jeff

[LGAFF]

1992
Ported to 35mm IH/Plenum
Port Matched heads
Watson Headers
Borla 2 3/4 with no resonator...
X-Pipe
DRM basic Chip
Fidanza Flywheel
63mm TB

391 RWHP with 13.7:1 fuel ratio.....needs a tune

Best Run on Street Tires 12.42 @ 117.5

[RHanselman]

Originally Posted by Paul Workman

YEOWZAH!! Dat what we're talkin' about!!

A few qestions, por favor...
Ron, your turbos are mounted near the differential, if I recall? If so...can you tell us what kind of lag there is with tubes being so long?
And, are the tubes ceramic coated back to the tubos?
6-8# is what I've seen recommended for a max on 10:1 to 10:5 compression motors. 8# on a 9:1 should be pretty "safe", I suppose on stock rods. Any plans to boost it a bit more?
Are you using the stock ECM, or ??


P.

Paul,

Yes, rear mounted turbo's. I don't feel the lag; she comes on strong around 3k rpm. The Jeal Headers are ceramic coated but not the pipes to the turbo's. Many think that heat energy is the key however it's more the kinetic energy that spins these rear turbo's. I may get some benefit by rapping the pipes but... 4-5#'s of boost for the stock LT5, 6-8 is for the LT1/4. With the 9:1 and the Head Studs we thought that 15 PSI was a good number. BTW, the stock valve springs are only good to 15 PSI. I plan to push up the boost once I upgrade the ECM. So yes, it's a stock ECM with a tune I bought from Mark Haibeck (from the single turbo car) and then had modified when I sent the car to Corey.

I'm in the middle of the ECM upgrade so hopefully I'll have a 15 PSI car by the Vegas Gathering. I'll also need to upgrade the turbo exhaust housings to get to the 15 PSI mark...

[boostedmaxPSI]

Final numbers are in....

Car started off as a Callaway Supernatural 475 (optimistic). From the previous owner and Callaway the follow items have been done.

Ported upper, IH and heads. Porting is not aggressive, approx 35.5mm. 63mm TB, ported throttle body horn, modified air lid. Callaway 3" exhaust with no center resonator and a funky "semi" X pipe. Mufflers are center exhaust glass packs used on the Speedster Twin Turbo cars. Stock headercat. 3.92 gears. Cams are re-timed to Callaway specification.

Single mass fly wheel
Lighter pistons

362rwhp on Callaway tune
377rwhp on Henderson tune, hot motor

SW headers, thermal coated and high flow random tech cats added...

403rwhp, Henderson tune, hot motor. 27.5 degrees of timing.
375rwtq

I think it would interesting to see what number it will lay down with a cold intake/ motor.

+26rwhp net with new headers and cats.
+41rwhp over my original starting point.

No t the most powerful car out there but when I start to think how old this car is and the power it makes for that era. It's pretty impressive.

Adding the SW headers was the perfect addition. The car has a high pitch exotic sound. My Car seems angry now for some reason.

[RHanselman]

Originally Posted by boostedmaxPSI

Final numbers are in....

+26rwhp net with new headers and cats.
+41rwhp over my original starting point.

Very Nice!

[XfireZ51]

435rwhp@6750/387rwtq@5300

Ported top end. DIY.
Watson headers 1 7/8" primaries
SW XPipe
3" exhaust w DynoMax UltraFlow+Z06 NPP
Pete's re-grind on intake side. Exhaust coming?
GVD Ported Heads
My own custom tune. Continuing to evolve
Z06 front calipers
Z06 wheels
DRM coilovers w Bilsteins Marracca valving
Poly front end
Hurst short throw
3.73 rear

[Fully Vetted]

Originally Posted by boostedmaxPSI

Final numbers are in....

Car started off as a Callaway Supernatural 475 (optimistic). From the previous owner and Callaway the follow items have been done.

Ported upper, IH and heads. Porting is not aggressive, approx 35.5mm. 63mm TB, ported throttle body horn, modified air lid. Callaway 3" exhaust with no center resonator and a funky "semi" X pipe. Mufflers are center exhaust glass packs used on the Speedster Twin Turbo cars. Stock headercat. 3.92 gears. Cams are re-timed to Callaway specification.

Single mass fly wheel
Lighter pistons

362rwhp on Callaway tune
377rwhp on Henderson tune, hot motor

SW headers, thermal coated and high flow random tech cats added...

403rwhp, Henderson tune, hot motor. 27.5 degrees of timing.
375rwtq

I think it would interesting to see what number it will lay down with a cold intake/ motor.

+26rwhp net with new headers and cats.
+41rwhp over my original starting point.

No t the most powerful car out there but when I start to think how old this car is and the power it makes for that era. It's pretty impressive.

Adding the SW headers was the perfect addition. The car has a high pitch exotic sound. My Car seems angry now for some reason.

Frank - those are great numbers from one beautiful car. And the anger comes from being constipated all those years!