stroke or not to stroke

[mopar3401987]

so i was looking into replacing my cast crank to go with a forged one in my 73 340 there are lot of forged cranks out there but i was thinking about just putting a stock stroke forged crank or maybe getting a stoker set up. my question is when dealing with forced induction wouldn't you want to keep the a shorter stroke because it will built rpm and boots faster or does the benefits of a stroker out way this ?

looking to run 6-10 psi out of a pro charger or paxton
i already have forged pistons and rods

 

[tinman2]

Since you already have pistons and rods... if they are for stock stroke crank you can't use one or the other for a longer stroke crank. The pistons will be sticking out of the cylinders.

 

[rumblefish360]

Here's the real question, what do you want from or out of your car when your done building the engine? How is the rest of the drive train set up?

More stroke more torque down low with a shorter rpm ceiling. The oppsite for a short stroke. Blown or not.
How fast the pressure comes in is a pulley choice away. Generally speaking, you need to spin the engine in order to get the boost.

 

[mopar3401987]

i have a built 904 trans 3000 rpm stall from the 727 specialist with a 8 3/4 3.91 posi . paxton said i will have 8 lbs of boots at 6000rpm which is were i have my rev limiter set up at if i went with a stoker i believe i may have to change the rods and pistions but i am not sure. i was just trying to figure out if it would be worth putting a stroker kit in it or just keeping the 3.31 stroke .... my motor makes its peak power at 5500 rpm right now but i am changing the cam for the super charger set up.

 

[rumblefish360]

You could use stock rods for a low power application. New rods are cheap and will hold much more power> You'll need new pistons for most stroker applications. For surely a 4.0 stroke.