Slant Engine 400 Horsepower and Beyond
How to get 400 hp from a B19/B21/B23 block?
B19/B21/B23 block, stock M rods and cup pistons, 8v head (160, 398, 530, 531), stock intake manifold, distributor ignition. Turbo 55 mm+ wheels and #14 exhaust housing. Compression ratios 8.5 on gasoline / 9.5 E85. Camshaft D, K, V, VX, VX3, or A. Boost pressure 2 bar. + Affordable. – Power comes like a horse kick, especially from a B19 block.
How to get 400+ hp from a B230 block?
B230 block, 8v head (160, 398, 530, 531), stock intake manifold, 55 mm+ turbo, compression ratios 8.5/9.5. Programmable fuel injection or LH 2.4 chip. 750 cc (gasoline) or 1,000 cc (E85) injectors. Bosch 044 fuel pump. + Rather affordable. – Slightly angular when entering the boost range.
How to build a 450+ hp HIPO engine?
B230 block + 16v head (Penta 16v belt/tensioner). H-rods, stock intake manifold (B234F/B204FT). Pulse exhaust manifold, direct ignition with separate coils. 55 mm+ turbo with #10 exhaust housing, 1.4 bar boost pressure. Stock 16v camshafts. + Quite nice to drive.
What is needed for the 500+ hp level?
For the shopping list: 1,500–2,000 cc injectors, larger turbo (HX40→, wheels 60/65 mm→), plenum intake manifold, forged pistons. Over 600 hp: stiffer camshafts, oil squirters. Gearbox: M90 is easiest, or Getrag V162 (BMW M5/Supra), ZF S5D/S6D.
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