i have a racetech dragster that i ran last year. i used my 30 over 440 from the 23t altered i ran before. basic back yard engine. 906 self ported heads ; stock crank ;eagle rods je pistons dragster ran 8.70 s 151 engine dynod 596 hp . this year i bought a 501 stroked 400 b1 engine from a friend. question 1. how much rpm do you guys run or should i expect to run with this setup. this engine. 400 grouted block' callies crank' alum main caps' bme alum rods' ross 13.5 pistons b1 orignal ported heads' t@d rockers 1050 dominator dynod 839 hp. dragster has 4.10 s and 33 x16 tires. second question . i always ran goodyears on the altered but this car has hoosiers . why does everbody seem to run hoosiers on the dragsters i know they dont seem to grow as much on the top end. any help appricated [grampy]