TCI116-0204-SPEED-G (T/K)What it is: High-strength, low-drag torque converterWhat it fits: Popular transmissionsFeatures: TCI has re-engineered its 10-inch Street Fighter converter for faster street/strip performance and better reliability. It's built with furnace-brazed fins for strength and durability, and supported with low-friction Torrington bearings for less drag and heat buildup. The higher stall speed will hack away at your e.t., but it's tight enough to maintain good street manners.Contact: TCI Automotive, Dept. CC0204, 151 Industrial Dr., Ashland, MS 38603, 662/224-8972, www.tciauto.com
GM Performance Parts116-0204-SPEED-H (T/K)What it is: Forged 383ci crankshaftWhat it fits: '86-and-later 350ci small-block Chevy with the one-piece rear-main seal Features: GM Performance Parts has brought yet another trick small-block Chevy part to life. PN 12489436 is a 3.8-inch-stroke crank to squeeze 383ci out of your late-model, one-piece rear-main seal 350 block. It's forged of 4340 steel, so it laughs at heavy shock loading, nitrous, or whatever else you can dish out. Use it with GM's PN 12497870 connecting rods (that's a full set of 8), and piston PN 12489437.Contact: GM Performance Parts, 800/577-6888 nearest dealer, www.gmgoodwrench.com