Thread: sbc pros please help

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thanks for your replies as for the rockwells when i had the 406 in it with basically stck components it performed well it would light the tires up and i hooked back to back to a 3500 cummins dodge with flatbed weighed 11000 and my weight is around 5000 and i drug him on asphalt but the class i have to run called mega truck is stricktly because my axle and tire size has no limits on what u can do and most of the guys have sponsers however im some what budgetted and they wher waxing my time so im just trying to keep upi dropped the block off at machine shop today to go up to .40 over changing my bore to 4.165 and he recommended staying with nitrous and going to flat tops probably forged he also reccomended around 260 at .50 on duration and max of 575 lift on mechanical lift roller cam does that sound good? torque is the key in what i do also i pulled the granny gear four speed and went to a turbo 350 manuell valve body shift kit and b and m slap shift i was told 3500 stall would be good how does that sound? im looking for 500+ hp and as much torque as possible my origanal motor was estimated to have about 300 from local engine builders based on them seeing it perform so i thimk 500 plus more torque can be achieved around 2000 dollars hopefully and should see a big difference plus i have the bottle on top any input? thanks thanks thanks

Originally Posted by biggestchevy

thanks for your replies as for the rockwells when i had the 406 in it with basically stck components it performed well it would light the tires up and i hooked back to back to a 3500 cummins dodge with flatbed weighed 11000 and my weight is around 5000 and i drug him on asphalt but the class i have to run called mega truck is stricktly because my axle and tire size has no limits on what u can do and most of the guys have sponsers however im some what budgetted and they wher waxing my time so im just trying to keep upi dropped the block off at machine shop today to go up to .40 over changing my bore to 4.165 and he recommended staying with nitrous and going to flat tops probably forged he also reccomended around 260 at .50 on duration and max of 575 lift on mechanical lift roller cam does that sound good? torque is the key in what i do also i pulled the granny gear four speed and went to a turbo 350 manuell valve body shift kit and b and m slap shift i was told 3500 stall would be good how does that sound? im looking for 500+ hp and as much torque as possible my origanal motor was estimated to have about 300 from local engine builders based on them seeing it perform so i thimk 500 plus more torque can be achieved around 2000 dollars hopefully and should see a big difference plus i have the bottle on top any input? thanks thanks thanks

boy 040 over on a stock 400 block ? and make 500 then hit Nos no i would not do it. but good luck. maybe in low lock the rockwells are not a big deal .but i know better if you run hill.n.hole the axles take power to run a hell of alot more then smaller axles .guys i have worked with run hill.n.hole all big engines and do very well check out . buck nasty