Hey guys my names Josh Sweigart, I'm new to the forum, an i have some questions that I think you guys can help me out with. I have a 1979 impala with a 305 sbc. I was wondering if you guys knew what the max hp of the stock bottom end would be? I'm looking into putting a single turbo setup on, an I want to know the max power I could put out. I was thinking around 5 or so psi for the stock motor. Any information would be greatly appreciated. Thank you.

 

There is no magic numbers or proof numbers on how much power things can take there are just to many factors. I can rattle off some guide lines. 305 block easily 500hp+ / 500hp 2 bolt, sprayed caps 500hp+ (They say the 305s have a much thicker webbing then that of the 350s. factory balanced crank 500hp. Factory balanced rods 375hp give or take NOTE: The rod studs/bolts will fail before the rods) pistons give or take its hard to rate these in HP. If your pushing high RPMs and detonating you'll shatter them easily.

 

Alright thanks alot. I seen a built 305 (bored to 315) four bolt with a procharger. made 600 and change at the rear wheels.