Brian Massingill's

1998 Z-28 Camaro

formerly owned by Patrick Guerra

11.22 @ 121.40 mph, 1.50 60' time on motor!

Yank Sportsman Pro 4L60E transmission, deep pan, 9 clutch assy., valve body opened up with high volume ports.  Shift speed 0.40 seconds vs. 0.80 stock, KTRE 12 bolt rear end, 4.10 gears, B&M Super Cooler. Trans temps stay at or below 180, even in heavy traffic.

Yank 9" Thruster Pro 4000 converter.  My shift from 1st to 2nd occurs at 6700 rpms.  My rpms do not drop below 5600 going into second gear.  My shift into 3rd occurs at 6700 rpms.  My rpms do not drop below 5600. Full stall is 4500 rpms with the Yank Tranny Tricker.  Stall torque ratio is 2.70.  Posi-lock-up clutch.  Lightweight billet cover.  Weight is 27 lbs.

Yank Tranny Tricker: full manual transmission control with the push of a button (used for testing and occasional race use)

Ported Heads with 2.02/1.55 Ferrera valves, by School of Automotive Machinists in Houston, Casey Schnieder, chief head porter. 305 cfm @ 28" H2O @ .500 lift intake, 230 cfm @ .500 lift exhaust, both flowed under a 3.90" bore. Lunati titanium retainers, Comp Cams springs (130 lb. seat load) LT5 cups, Manley Hardened Chrome-moly Pushrods, stock length.

2001 LS6 intake manifold added in April 2001.

Lunati "P2" Cam:  221/224 duration @ .050, .560/.560 lift, 113 LSA, installed at 113 degrees (6 degrees advanced from just lining up the dots) by School of Automotive Machinists, Houston, Tx.

Grotyohann long tube headers. 1.75" primaries, 3" collectors.  Car Sound 93009 3" converters each side. For flow tests of cats press here.  3" mandrel bent y-pipe reduced to 2.5", then into 3.5" Flow Master collector, then into a 3.5" Race Reddies cut-out. Flow Master 3.5" to 3" reducer. Cat back was recently changed from Borla to a 2000 SS take-off muffler.  Much better sound than Borla. For dyno results of headers with dual cats vs. ported manifolds with NO CATS, press here.

Sheet metal Ram Air Box picks up high pressure cool air under the car.  MTI Power Induction Lid.  4.7K ohm resister (timing tricker).  Home ported MAF, ported throttle body with throttle shaft milled and throttle plate knife edged.  EGR tube cut. Thottle plate drilled for larger cam to smooth idle. 4.64 volts on Throttle Position Sensor at 100% WOT.

PCM tuning by MTI . Tuning allows full use of Hypertech Power Programmer to adjust for shift points. 7000 rpm redline, 850 rpm idle in drive, 950 in neutral. Engine tuning is HPP3 non-RFG tuning with +2 degrees of timing above 5000 rpms. I now have 32 degrees of total timing! 160 degree thermostat installed, 255 mph limiter,, +3 mph 1-2 shift, +2 mph 2-3 shift, +8 mph 3-4 shift, 100% shift firmness. Torque management eliminated for fast shifts. MAF translator by Modern Musclecar. Base setting +2 clicks rich and WOT setting -2 clicks lean. WOT fuel trims below 10% and O2s .890-.910 mv on Autotap.

Taylor plug wires. NGK TR5 plugs gapped at .045".

Front sway bar removed. Bridgestone RE-92 205/60/16 radials (narrowest tire available with stock height that fits on stock front wheels). 5 lbs lighter than stock and 3 inches narrower (less drag).

ASP underdrive pulley. Worth .15 seconds in ET!

Internet Racers Supply Lower Control Arms. Air Bag in right rear spring, 22 psi.  Red Hawk reinforced stock torque arm, Energy Supension polyurethane trans mount bushing.  Nitto Drag Radials, 245/50/16 at 22 psi. Red Hawk Subframe connectors. SLP panhard bar.

Current rwhp estimated to be 410 rwhp and 550 tq. with converter unlocked. Old Dyno sheet: 370 rwhp, 547.6 tq. with converter unlocked, 389.3 rwhp, 373.6 rwtq with converter locked. To see a dyno sheet, press here.

Best ET: 11.22 @ 121.40 mph, 1.50 60' time!

Under-side of car.  Long tube G-Hann headers, dual 3" cats, big 3.5" Flow Master collector and 3.5" cut-out

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E-Mail Patrick Guerra

Bridgestone RE-92 205/60/16 tire on stock 16" wheel, 5 lbs. lighter than stock and 3" narrower!

Clean under hood.  Just one decal.  School of Automotive Machinists, Houston, Tex. (713) 683-3817

Ram Air Box opening up top

Ram Air Box picks up air to the left of the cross-member and transmission cooler.  This view shows the opening at the same level as the air dam deflector.