What exactly is a stroker engine and how much HP gain does it achieve w/ different sizes (383, etc...)??

 

A stroker is a block used with a bigger stroke than originally designed... Or so...

its like the 350, 383, 396, 409, are strokers of the 327 or 302.

For instance the 350 uses a 3.48" stroke in the case of the lt1 and a 383 uses a 3.75", a 396 uses 3.85" and a 409 uses 4".

In the case for the ls1 the stroke is 3.62" for the 350 and 3.905" bore with a 4.00" stroke for the 383"

Keep in mind that the more stroke the more piston speed and the slower it will rev but more torque it will have at lower rpms

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94B4C M6
Finishing project
Borla Competition--
AFR Heads
383 + Paxton Supercharger