| INDUCTION |
| Carb: |
Holley |
| Size cfm: |
850 Double Pumper or 950 HP |
| Mods: |
Jetting specific to application |
| Intake Manifold: |
Edelbrock |
| Single/Dual Plane: |
Port-matched dual-plane Performer |
| RPM with cast-iron heads, port-matched and |
| plenum-ported Victor with Edelbrock cylinder |
| heads (for 600-plus horsepower) |
| IGNITION |
| Distributor: |
Butler Performance HEI |
| Amplifier: |
MSD 6AL (optional) |
| Coil: |
MSD |
| Wires: |
MSD |
| Total Timing: |
34-36-deg |
| Initial Advance: |
14-deg |
| Mechanical Advance: |
20-deg |
| Vacuum Advance: |
N/A |
| EXHAUST |
| Headers: |
Not included |
| Recommended: |
Doug's 1.75-in with cast-iron heads, |
| 1.875-in or 2-in with Edelbrock |
| Collector Size: |
3 to 3.25-in |
| GASKETS |
| Brand: |
Butler Performance |
Ancillary Components Included
Timing cover, aluminum valley pan, high-flow water pump
Ancillary Components Not Included
Headers, flexplate/flywheel, mini starter
Optional Upgrades
E-heads starting at $750
EFI starting at $1,200
Valve covers chrome included / aluminum, add $248
Serpentine pulley system starting at $659Alternator/PS/AC compressor, chrome waterneck kit: $999
MSD billet distributor: $195
Forged 4.5-in stroke crank /ARP2000 rod bolt upgrade starting at $479
(Billet four-bolt main caps recommended: $249)
Vacuum pump starting at $599
GM Performance Parts 327/327 5.3-liter V-8
GM Performance Parts has a great alternative for late-model Pontiac owners looking to replace the 305/350 corporate small-block engine under the hood. It is a 5.3L cast-iron block version of the LS V-8, and it really is a dynamite little engine.
Now before you go off and dismiss this as a Chevy engine, it isn't-this is a GM Powertrain offering for budget-minded performance hobbyists. For the price of a top-end PC computer, you can put an all-new LS engine under your hood.
Based on the 5.3L Vortec truck engine, the GMPP is a beefy high-nickel, cast-iron, deep-skirted block with six-bolt mains, two of which are cross-bolts. The cylinder walls are very thick, so thick in fact that the stock 3.78-inch bore can be safely enlarged to the 5.7L's 3.91 inches. That is a full 0.130-inch overbore. When is the last time a production block of any kind was able to take that big a hit on the cylinder wall? The fact that the LS engines were originally designed as aluminum-block castings means that the cast-iron versions are super-beefy-capable of withstanding more than 1,000 hp.