Main >> Water Pumps >> PRO-Line Aluminum Water Pumps- PRO-Line Alum. PRO-Line aluminum water pumps use state-of-the-art technology and are designed for super cooling (20% more than stock pumps). They provide maximum flow, maximum pressure, and designed strength. Our pumps have close clearances, heavy-duty 3/4" shaft with 5/8" pilots. These pumps provide equal water distribution to both sides of the block, and have enhanced lightweight impellers. Chevy Small Block Part No. Engine Type Year Price WP-350HP 350 Short Style; 5/8" Pilot Shaft '55-'68 (also later trucks) $69.99 WP-350LS 350 Long Style; 5/8" Pilot Shaft '69-'87 $84.99 WP-350RR 350 Reverse Rotation; 5/8" Pilot Shaft '87-Present $94.99 WP-350CT 350 Circle Track (Enhanced & Lightweight) '68-Present $89.99 Chevy Big Block Part No. Engine Type Year Price WP-454HPS 396-502 Short Style; 5/8" Pilot Shaft '69-'87 $115 WP-454HP 396-502 Long Style; 5/8" Pilot Shaft '69-'87 $93.99 WP-454RR 454-502 Reverse Rotation; 5/8" Pilot Shaft '88-Present $94.99 Ford      Ford 351C Part No. Engine Type Year Price WP-302HP 302 Left-hand inlet w/ back plate '70-'87 $94.99 WP-302L 302 Late; Reverse Rotation '86-'93 $84.99 WP-460HP For all Ford big blocks '70-'92 $93.99 WP-351C 351C  '70-75 $94.99 Chrysler Part No. Engine Type Year Price WP-440HP Stock replacement & works w/ MOPAR housing '58-'79 $64.99 WP-318 SB 318/340/360 '68-'79 $103.99