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Obsession With Perfection Racing

1988 Daytona Shelby Z

Sold in 2002 to allow the 2000 Camaro SS a parking spot!

 


 

My first FAST Shelby-Dodge

T2/555/T-tops/all power options : 14.1 @ 101.9mph
14.1@101.9 best on STREET tires... and  .5mm over Sealed Power cast pistons at 20 psi

135K miles
MODS:
Summer 99:
Short block rebuilt; sealed power gapless rings, new pistons, .5mm over.
Ported 2 1/2" wastegate housing
K&N filter, Intellitronix A/F gauge
Energy front suspension bushings, new Mopar sway bar bushings, new motor mounts
Axles Northwest axles
180 thermostat
Adjustable FPR from Forward Motion
New fuel pump; 255 lph high pressure pump
New Mopar power steering pump, new PS rack, new PS hoses.
Painted engine bay

Summer 2000:
Super 70 turbo from Chris Wright at Turbos Unleashed, modified so can be removed without pulling the head
Ported Exhaust manifold; FM, additional port work, Swaintech coating, tapped for 1/8 NPT EGT probe
Swirl port (782 casting) head ported by Ladd's Porting, Baltimore, MD
    Bowls smoothed, valves unshrouded, chambers opened 5cc to lower compression to 7.5 or so, mild smoothing of runners, backcut stock valves
Stainless braided turbo lines
1st Gen Talon BOV
Transmission freshened by Westminster Transmission, end play tolerances on low side
Transmission case bead blasted and painted metallic black
T3 pressure plate, T2 disk, T4 throwout bearing from Dealer's equipment in Florida, 904-354-7381 (120 bucks!) Flywheel resurfaced.
All brackets bead blasted and painted with Mercruiser outdrive "Phantom Black"
Engine block painted "Phantom Black"
Bobble strut modified with addition of 850 pound double valve spring to increase preload
Driver's side sway bar shimmed
G-valve boost control; 16 psi on stock injectors at 55 psi static fuel pressure netted 15.2 at 95 mph, rotten launch.

Winter 2000:
3" exhaust with Dynomax Race Magnum 3" round muffler, Catco high flow cat
TAFT S2 cam, high RPM lifters, new rockers. More lift, negative overlap, and NO wear problems like the S60 cam.
New Mopar (4 wire) O2 sensor
FWDPerformance / ND computer with S60 injectors and 3 bar MAP at 18 psi boost (No rpm cutout, no boost cutout as far as I can tell)
G-valve boost control for 'weekend" and track use set to 20 psi + (computer seems to keep adding fuel)
Converted interior to cloth seats and door panels
New heater core. AC deleted.

Spring 2001
Existing Turbos Unleashed Super 70 turbo modified with a .63 A/R exhaust housing and checked for play. Thanks Chris.
( Note: the .63 housing is BIG... you may need a grinder or  Dremel to make the inner nut for the exhaust pipe fit, even with a 89-up wastegate housing.  I carved almost half of that bolt away on mine.) The turbo can't be removed easily without the head off anymore :(
Stripped off the coating on the exhaust manifold; it was peeling. Swaintech can't take the heat...
Added DEI "2000 degree" aluminized heat shielding to bottom of intake and behind fuel rail on face of intake, as well as back of valve cover.
(Heat shielding does not seem to help with the exhaust manifold uncoated. I need to find a GOOD ceramic coating to keep the heat IN)
Gasket matched ports on intake and exhaust manifolds (ONLY on the roof side)
Gasket matched head runners as well to improve high lift flow (only on roof)
See some comparative flow numbers here.
Rick Diogo 3" stainless downpipe - Man, this thing is a work of art! Car is now 3" turbo to tail!!!
Had Cindy at FWDPerformance make me a little hotter computer with more timing and faster boost rise
New tires... somehow the front tires keep wearing out... I need to figure out why someday.... Yokohama AVS dB in 205/60/15
 
 

Dunlop D60A2 tires; 195/60/15HR, Zero miles on 2/4/2000. These were GREAT tires.
Interior is excellent, converted from heavy power leather seats to lighter manual cloth.
No rust, excellent paint, no clear fade. Recently painted engine bay.

This car ran 15.67 at 89mph at Cecil County in September 99, at stock boost of 12 psi.
Ran 15.2 at 95 mph September 2000 on a rotten launch at 16 psi
August 2001, 14.17 at 101.9mph... on street tires, about 20 psi.

Others have run much much faster... over the summer of 1999 I saw an Omni GLHS and a Plymouth Reliant run side by side in the mid 11s. Gary Donovan has now run in the 10s in "Relentless", on his heavily modified 2.5. These turbo cars are cheap and easy to make faster. 14s are just a little bit more boost away, and 13s are also easily achievable. The best part is that you can do 14s for less than 100 bucks, and 13s for less than $1000. Amazing numbers for a front wheel drive, don't you think? Oh, yeah... the 13 second cars will also get better than 20 mpg...
 

Future Mods / Never Got to These

Nitrous? Maybe.
2.5 short block?
Forged pistons?
Underdrive crank pulley
Powerstroke diesel intercooler in nose or Volvo cooler in front of radiator
Cold air cone intake
Further port 2 1/2" wastegate housing to as close to 3" as possible
Bumper sticker for 94 Camaro Z28 that says "This is my SLOW car!" I really needed this by the time all the mods were done!

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