351/460
03-27-2008, 12:52 PM
#31
Mach I Section Moderator
Join Date: Mar 2007
Location: round abouts these parts
Posts: 7,140
RE: 351/460
Pony, here is a really easy build, with a stock block....i found this just rummaging through some old links
393 C.I.D. 351 Windsor [/align] Further up the small block scale is the 393. Windsors are becoming -- heck, they already are -- a very popular swap with the Mustang crowd. It's kind of a no-brainer. For a few bucks more than a five-oh, the 351W gives you extra torque-creating cubic inches...and a stroked 351W gives you even more. The key to the 393 is the crank. Summit now has a 3.850 in. cast stroker crank designed to build a 393 with a .030 overbored block, stock length 351W rods, and stock-type 302 pistons. Our 393 features that crank plus Summit H-beam rods, Trick Flow 10:1 forged pistons, a Crane .574/.595 in. lift roller cam with a Crane roller lifter retrofit kit (required for the 1979-vintage non-roller block), and Trick Flow R-Series cylinder heads. Instead of going fuel-injected, we did the carburetion thing. Since the 393 is a veritable torque factory, we used an Edelbrock Victor Jr. 351W intake manifold to build some horsepower up top without losing low-end power. We originally planned to use the 750 Holley double pumper carburetor we featured in the 393 buildup article, but on the advice of the Trick Flow staff, switched to a 750 cfm Demon double pumper for the dyno tests. After fiddling with timing (the 393 decided it liked 36 degrees total advance) and carb jetting (73s primary and secondary), and adding a 1 in. open spacer to help further boost the top end, we settled into making big power. In the buildup article, we stated that the engine should make 500 horsepower naturally aspirated -- and even more with the 150 horsepower NOS nitrous kit we wanted to use. While the nitrous deal didn't happen in time for this article, we beat the 500 figure with 529 horsepower at 6,500 rpm. And there was all that lovely torque, peaking at 472 foot-pounds at 5,000 rpm. This power was not gained at the expense of low rpm torque -- not with 377 ft.-lbs. of it available at three grand. Think about this beastlike 393 between the fenders of a five-speed Fox body! [/align]
393 C.I.D. 351 Windsor [/align] Further up the small block scale is the 393. Windsors are becoming -- heck, they already are -- a very popular swap with the Mustang crowd. It's kind of a no-brainer. For a few bucks more than a five-oh, the 351W gives you extra torque-creating cubic inches...and a stroked 351W gives you even more. The key to the 393 is the crank. Summit now has a 3.850 in. cast stroker crank designed to build a 393 with a .030 overbored block, stock length 351W rods, and stock-type 302 pistons. Our 393 features that crank plus Summit H-beam rods, Trick Flow 10:1 forged pistons, a Crane .574/.595 in. lift roller cam with a Crane roller lifter retrofit kit (required for the 1979-vintage non-roller block), and Trick Flow R-Series cylinder heads. Instead of going fuel-injected, we did the carburetion thing. Since the 393 is a veritable torque factory, we used an Edelbrock Victor Jr. 351W intake manifold to build some horsepower up top without losing low-end power. We originally planned to use the 750 Holley double pumper carburetor we featured in the 393 buildup article, but on the advice of the Trick Flow staff, switched to a 750 cfm Demon double pumper for the dyno tests. After fiddling with timing (the 393 decided it liked 36 degrees total advance) and carb jetting (73s primary and secondary), and adding a 1 in. open spacer to help further boost the top end, we settled into making big power. In the buildup article, we stated that the engine should make 500 horsepower naturally aspirated -- and even more with the 150 horsepower NOS nitrous kit we wanted to use. While the nitrous deal didn't happen in time for this article, we beat the 500 figure with 529 horsepower at 6,500 rpm. And there was all that lovely torque, peaking at 472 foot-pounds at 5,000 rpm. This power was not gained at the expense of low rpm torque -- not with 377 ft.-lbs. of it available at three grand. Think about this beastlike 393 between the fenders of a five-speed Fox body! [/align]
