Would just getting a new crank consider my car a stroker? I want to stroke my engine for more hp+torque but i really dont know much about it. Help please
Thanks

 

a bigger crank increases the distance the piston travels in the cylinder...or the stroke length...so yes.

there are other ways to increase power besides rebuilding with a new crank.

what are your goals? what's the car? budget?

give us more info and we can help better.

look around at some of the setups on the board, like my cam only bolt on car with 400rwhp (450hp at the engine).

 

my goal is to make about 550-560 hp with a somewhat limited budget. Super and turbo charging are out for the moment. I have loudmouth slp exhaust and a k n n air filter. I also swapped out my ls1 for an ls6 but havnt had it tuned yet. I have hooker supercomp long tubes on the way and im thinking about which cam to purchase then once those are on i would like to have it tuned. But if i was going to go the new crank route as well i would get them all at once. Yes please please help any info is greatly appreciated.
Thanks

 

oh yes and i dont like nos

 

Yeah, once you swap out the original crank for a longer stroke one, you're building a "stroker". Just for example, Lunati sells 382 and 395 LS1 stroker kits.

There are several ways to skin a cat, and there are several ways to get more out of an engine. Stroking is a good way of helping build torque ... it comes down to simple physics ... longer "lever", more mechanical advantage, more torque . I had a 383 in my old '81 Z28 and it kicked a$$ . My long-term goal for my LS1 is a stroker kit .

 

FWIW, i read in a hot rod mag (can't remember which one, Chevy HP, or something) a few years ago where they tested that stroker "myth" of having more torque. They found it's just the displacement adding the power. ie, two motors at 383cid (don't hold me to that number, i don't remember), one was stroked, one was simply bored out. Long story short, they both made roughly the same power.

Regardless, there's no replacement for displacement.

 

a stroker crank also requires different pistons and rods. rod length and pin heights are changed.are you wanting 550 at the flywheel or the rear tires? flywheel could be easily had with heads and cam. while rwhp it's easiest to stroke it.

 

One thing that hasn't been mentioned here is that it isn't as simple as swapping a crank. Your factory rod and piston are set up for the stock stoke crank which is 3.622" stroke. With a 4.000" crank yu can't jut drop it in with the stock rods and pistons, the piston would stick out past the deck.

As for budget set-up that will make 550-560rwhp, my advice is a forged 382ci set-up if you are looking to stay aluminum, or if you are open to the iron or LS2 options we can do a 402 or a 408. Our 408's regularly make over 525rwhp in M6 equipped cars.

Heres a few ideas to look over.

http://www.victoryracingengines.com/...c580317a1eda94