Anyone here have a stroker?

[Edmond]

Motor that is

One day down the line, I would like to do something major for a nice leap in performance. I've pretty much ruled out the forced induction because of the wear and tear it could cause on the motor cutting the life potential short.

Can I just bring the block and have them "punch" it 3 over and then do everything else myself?

What else do I have to do? I know that I'd have to get bigger pistons, cam, etc... right???

350's are usually stroked out to 383's right? Is there really that much more performance in 33 more cubic inches?

 

[Ken]

Is there really that much more performance in 33 more cubic inches?

Power yes, but torque even more so.

_ken

 

[JonM]

Here is a little light reading for you...

Click Here

 

[echoecho11]

Edmond, would like to through in the thought that the more power you get from your vette motor the soner it will wear out. it 's like the brighter you burn the candel the soner it will go out. I have seen many people modifie ther cars only to get beet by a stock engine in a stock car that was well tuned. ask KEN that it takes a bote lode of experance and knowlage to out engener the factory ( you did read about ken modifieing the engine in his silver 87 ? if you didnt read it , you will love it ) there are lots of good books avlible on rebuilding the small block chev. you get seat of the pants proformance from blue printing your engine. you can get almost 50 more HP from swaping out the dished out pistions in your 88 L98 for flat top pistons out of a 90-91 L89 and some roller rockers. hope this helped well be watching your post....... echo echo

 

[LarryBible]

Yes, it is only 33 more inches, but those inches all come from increased stroke. So, not only do you benefit throughout the RPM range by increased displacement, but you benefit greatly in the mid range due to the longer crank arm giving more mechanical advantage.

The 383 is a torque monster. That said, you must give proper consideration to camshaft profile to achieve the advantage with a tunnel port system. The tunnel port has certain charecteristics that are not considerations on a carbureted motor. If the engine is cammed correctly, along with the increased stroke and TPI runners, you will experience great mid range torque increases.

I strongly recommed John Lingenfelters book. Although it is about small blocks, there is much attention paid to the 383. Also David Vizard's series of books called "Building Horsepower" offer valuable information from his research that he shares regarding these great hybrids.

One last thing. In the early days of the 383's being built, they came from using a 400 crank with turned down mains so that it fit into a 350 block. Now there are MANY aftermarket 383 cranks. The 400 crank is nodular iron and plenty strong for street use, but if you are really getting carried away, there are now aftermarket steel versions of this piece.

Enjoy,

 

[Vettelt193]

Don't forget, on top of the extra cubic inches, 350 to 383 conversions usually include many parts that are designed for more power (like the cam, pistons, rockers, intake, etc.) if you compared a built 350 to a built 383, the 383 would make more power, but it wouldn't make that much more... the big difference is most people compare stock or close to stock 350's to built 383's... which is a mega power difference

 

[Edmond]

Here is a little light reading for you...

Click Here

Jon,

That's a very cool thread; I learned quite a bit from that.

 

[LarryBible]

That is true about comparing oranges to apples, that is a stock 350 to a warmed over 383. That said though, if you like the feeling of seat of the pants torque, the 383 offers an inordinant amount of additional torque in the low to mid RPM range where you feel it most.

Again, you not only add 10% more cubes, but you add almost 10% more leverage on the crank throw. This makes a really nice addition in the force that the seat puts against your back at about 2,500 RPM.

Have a great day,