Did a search on TST Hp charts and said no one really goes by the charts anymore. So how much HP could you expect out of a 98' 12V with the 215 pump, #10 plate clear forward and a 16cm2 nonwastegated turbo housing?

 

I'd say maybe close to 300hp or just a hair over with those mods alone..after injectors and delivery valves, you'll break into 400's easily and you'll need a bigger turbo....and the bombing continues....get yourself some gov springs to stretch out the powerband as well

 

a hair back from full forward with 3k gov springs yeilded 357hp with a Scotty air, 16* timing and 16 cm housing on my 98 215 early on in its life before the twins and with a little more tuning probably could have got a little more. 300 is a low estimate with the 215 pump and a #10. i got 300hp at the rear wheels out of a 180hp pump with a #10 and gov springs alittle over 3/4 forward

 

I always like to give conservative estimates to prevent guys from feelign depressed when they go and dyno the truck and their bubble bursts...I'd rather be pleasantly surprised when i get big numbers

 

I have been wondering the same thing for my truck how much Horse power

 

LOL

Time and tuning. what runs best for you towing or on the street may not dyno as big of a number but will outperform and high dyno turning rig. 300hp is an amazing feeling from a 12v. its not HP its torque your striving for