The Mercury NXT package uses a very compact external gearbox with an ingenious cone clutch arrangement to provide forward/neutral/reverse. However it has proven to be the weak link when upgrades to th..
NEW CUSTOM 632 cuin 800+ HP ENGINES Carburetor to Oil Pan. 812HP @ 5900RPM 790ft.lbs of torque at 4300RPM on 93 octane gas. Dart block, Dart aluminum cylinder heads,I-beam connecting rods,Race Tec pis..
ARE YOU RUNNING WITH THE "BIG DOGS" OR LEFT AT HOME WITH THE PUPPIES!! TRADE IN YOUR GOOD MERCURY 502 MPI CORE IN OUR EXCHANGE PROGRAM. WE UPGRADE OUR 502 MPI ENGINES TO 540cuin TO MAKE 600 HP.ALL OF ..
TWO (2) USED,LESS THAN 70 HRS. 615 cu in 700+ hp, LOUSY PHOTOS, UGLY LOOKING, CLOSE THE HATCH, SMILE, AND GO KICK SOME A$$! GREAT RUNNERS!! MERLIN TALL DECK BLOCK, DART ALUM HEADS, 360cc SF CNC'D BY ..
We have a pair of used CMI Sport tube headers, Customer had to switch to E-tops to clear Pro Charger. Great deal on a great set of headers. Inquire about custom tailpipes for your application. Headers..
Upgrade your tired 502MPI to a 540CI with 550HP. These engines are hand built, balanced & blueprinted and are assembled by expert engine builders with 30 years experience. They carry a full two year w..
Upgrade your 500EFI to a 540CI with 635HP. These engines are hand built, balanced & blueprinted and are assembled by expert engine builders with 30 years experience. They carry a full two year warrant..
Hi-Torque Small Block Exhaust Manifolds System feature state of the art design with single wall internal casting that is enclosed in a press formed aluminum jacket creating a fully water cooled manifo..
We believe that the HI-TORQUE Manifold System is the best combination of horsepower increase, weight reduction and long life available in the entire marine industry today. We have recent official test..
Created for large, high horsepower engines, the Hi-Torque Gen-3 is an excellent choice for 600-1400 HP monster motors. On many engines, they equal or exceed header performance. On supercharged engines..
Mercruiser Thru-Transom Designed as a direct replacement for Mercury manifolds using transom mounted exhaust tips and hose. Outlet is 8" further back than stock manifolds. BB Chevy Magnum-36" wide . ..