ive got a 454 (from a 69 chevelle if i haven't already gotten things mixed up, says casting #). its bored over 30 and has a 4 bolt main with a 2 piece rear main. im going to pickup a nice 4.250 crankshaft and get this thing up to a 496. now my question is, with 6.385 rods, what sort of flat top...
i want to build a box jump for my bmx bike.
i have an idea for the dimensions.
Height- 5 feet
Deck length-9 feet.
Take off radius-9 feet
Landing radius-?
What should the landing radius be for it to be a good box jump? We would like it to be a very mellow landing so that if we case it doesnt...