The right bore for a stroker?

[smoking66]

Ok heres whats going on. Im 19 and just got my first project car ever so i want to make sure i do everything right, that means im going to be on this site alot... I have a 66 charger with a 69 440 that came out of a 69 charger r/t. The whole motor needs to be rebuilt and i was thinking of stroking it while i have it apart. I heard good things about 440 source stroker kits, but i was looking at them and noticed there was no stock bore, its all .030+, dose that mean i have to bore out the cylinders to put in a stroker kit? And one more question, what happends if i reuse my crank and rods and just replace the pistons and the top end of the engine, will i still be able to push 500hp? p.s. i will be using a six pack

[chargerbr549]

Yes it will need to be bored out to use the .030 to .060 pistons in the stroker kits or if you use a replacement piston you generally want to start with a new fresh bore because most likely your cylinders will have alot of wear after this many years.

The 440 is still easily capable of 500 HP in stock displacement but the question is how much are you wanting to spend and are you looking at streetable horsepower with good driving manners or more of a race type set-up with a looser convertor, lower gears and maybe a poorer idle? The 512 stroker kit is almost a drop in with no grinding on mine except on the oil pick-up boss just to give it a little extra clearance, the 512 will make the horsepower alot easier and at a lower rpm range, it just depends where you want your power at.

There is a ton of information on here from on 440's and stroker kits just click on the search button and you will find it.

Kevin

[smoking66]

Thanks for the info, gives me more to think about before i get the machine work done.

[375instroke]

The cylinders are machined to the pistons to get the proper clearance for the piston used and application of the motor.  Any decent motor needs perfectly straight cylinders with no taper or out of round.  The power a motor makes comes from the oxygen and fuel burned.  The more air and fuel in a given time, the more power.  If you have a smaller motor, in order to burn more fuel, you need to spin the motor faster than a larger motor to get the same amount of air through it.  Power is limited by your heads.  A stroker motor makes power at lower RPMs, which is great for the street.  The motor is always ready to go.  You don't need to spin it to infinity, downshift, run a 5000 stall, 4.56 gears, and so on, to blow that ricer, BMW, or Chevy into the weeds.

[smoking66]

blow that ricer, BMW, or Chevy into the weeds.

I like the sound of that, my buddy has a 75 corvette, he swears i wont be able to beat his 383... bull sh** i say.