BASELINE PARTS LIST
Like many 10-year-old Z28 Camaros, ours also had a complement of bolt-on performance parts that it had accumulated over the years. The following parts were already on our test car when our baseline dyno test was performed. Some of the items listed have a direct bearing on the power output to the rear wheels (such as the exhaust and cold-air package) while other items have an impact only on the street or at the track (such as gears, wheels/tires, differential, or shift kit). With the exception of the Holley throttle body airfoil, all the items listed were in place for the dyno test after the installation of the Edelbrock Performer LT1 package. It is worth noting that most people considering the Edelbrock Performer LT1 package will either have similar items or will get them soon. These basic bolt-ons are the low-lying fruit which should be harvested before any additional major mods are completed, and as you can tell, our stock-engine test car was ripe for the head and cam package.
| Item: | Part No.: |
| SLP cold-air intake package | 21014 |
| SLP 3.42:1 ring & pinion w/Zexel heavy-duty diff. | 64048A |
| SLP reluctor gear | 26029 |
| SLP weld-in subframe connectors | 70802 |
| SLP driveshaft loop | 65050 |
| SLP 160 degree thermostat | 100224 |
| SLP manual fan control switch | 63011 |
| SLP LT4 driveshaft | 64273 |
| Holley throttle body airfoil | 120-140 |
| Dynotech Performance Hi-Pro 4L60E trans | n/a |
| TransGo 4L60E Shift Kit | TRG-4L60E |
| Precision Industries Vigilante torque converter | 2800-rpm stall |
| Hooker 1 5/8-inch shorty headers | 2062 |
| Corsa cat-back exhaust | 14144 |
| Dynomax 3-inch Super Cat | 15143 |
| BMR lower rear control arms | TCA002-R |
| BMR LCA relocation brackets | CAB002-R |
| BMR adjustable Panhard bar | PHR002-R |
| BMR adjustable torque arm | TA001-R |
| BMR lowering springs | SP001 |
| Nitto NT555RII Extreme (front) | 275/40R17 |
| Nitto NT555R Drag Radial (rear) | 315/35R17 |
| Topline Products "Bullett" 17x9 front wheels | 1119-7961S |
| Topline Products "Bullett" 17x10.5 rear wheels | 1119-7161S |
| THE NEW PARTS |
| Item: | Part No.: |
| Edelbrock Performer LT1 cylinder heads (2) | 61909 |
| Edelbrock Performer LT1 camshaft | 2108 |
| Edelbrock 52mm throttle body | 3809 |
| Bosch spark plug wire set | 09753 |
| Bosch oxygen sensors (2) | 15703 |
| Champion spark plugs (8) | RC-12YC |
| Comp Cams timing chain set | 3206 |
| Comp Cams pushrod set | 7940-16 |
| Mr. Gasket LT1 head gasket set | 5715 |
| Mr. Gasket LT1 intake gasket set | 135G |
| Mr. Gasket valve cover gasket set | 5867 |
| Mr. Gasket one-piece oil pan gasket | 6561 |
| Approximate Parts Cost (mail order): | $2300 |
| Edelbrock Performer LT1 Cam Specs-- Part No. 2108 |
| Advertised Duration | 286 degrees (intake & exhaust) |
| Duration @ .050-inch | 218 degrees (intake & exhaust) |
| Lift @ Cam: | .350 inch |
| Lift @ Valve: | .525 inch (1.5 rockers) |
| Lobe Separation Angle: | 112 degrees |
| LT4 Hot Cam Specs (reference) |
| Advertised Duration | 272/281 degrees |
| Duration @ .050-inch | 210/228 degrees |
| Lift @ Cam: | .328-inch |
| Lift @ Valve: | .525-inch (1.6 rockers) |
| Lobe Separation Angle: | 112 degrees |
| Stock '93 - '95 LT1 Camshaft Specs |
| Duration @ .050-inch | 202/207 degrees |
| Lift @ Valve: | .450/.460-inch (1.5 rockers) |
| Lobe Separation Angle: | 116 degrees |
| Edelbrock Performer LT1 Heads--Specifications |
| Head Bolt Torque | 65 ft.-lbs. (steps of 40, 55 & 70) |
| Rocker Stud Torque | 45 ft.-lbs. |
| Combustion Chamber Volume | 54cc |
| Deck Thickness | 5/8 inch |
| Valve Seats | Hardened ductile iron (compatible with any fuel) |
| Valve Size | 1.940-inch intake, 1.550-inch exhaust |
| Valve Spring Diameter | 1.450 inches |
| Valve Spring Installed Height | 1.800 inches |
| Valve Spring Seat Pressure | 120 lbs. seated, 340 lbs. @ .600-inch lift |
| Max Valve Lift | .600 inch |