The original engine ran excellent in the Lemans. When I first got the car I decided to replace the valve cover gaskets, vally pan gaskets, etc. The motor was extremely clean inside. It did look as if it was rebuilt, but it was the original factory build. But alas several years ago doing a high speed run on the highway #5 rod bearing decided to let go!! Well now was the time to rebuild the motor. Better late than never.

406ci of Pure Pontiac muscle now resides under the hood!! Completely rebuilt. Every nut and bolt is new on this engine now. The block has been magnafluxed, aligned bored with honing plate and bore 0.030 over. CR now set at 10.12-1. Stock rods shot peened and polished. TRW Forged pistons with 990 BB pins. Crank turned .020/.020, polished,chamfered. Studs for the mains. APR bolts are used throughout the engine. 72cc E-heads were bought bare. Fully ported and polished, 1.65 Gold Crane roller rockers, Lunati springs good to .600 lift, Ferrea valves, 2.11 in. 1.66 exhaust. Melling 60lb oil pump, 8qt Moroso oil pan. Crane cam 272H, Performer RPM intake port matched., Holley 750DP, Hedman Hustler headers port matched with full length 2.5" exhaust thru 2 chamber flowmasters. Ignition provided by a Mallory Unilite electronic distributor and MSD 6AL box. All this power is put to the ground thru a Modified TH400 tranny and 3:23 Posi-Track rear. The motor was dynoed at 438HP!!

In the near future I plan on going with a slightly bigger cam to take avantage of the ported heads, higher stall, and possibly a nitrous system. I'm also considering ditching the factory 8.2 rear in favor of a 12 bolt with 3:55 gears. This all takes money, so we'll see what happens.