I'm thinking about doing a rebuild with 110,000K on the motor. I'm looking for more power and was wondering how much a 383 will increase?

Any tips would be appreciated. TIA

 

quick second question what does a stroker kit cost?

and i second that question: what does it do for horsepower or torque.

and thirdly how does it affect gas mileage

 

If the heads and cam are identical, you won't see a ton more horsepower, probably around 5%. You will see a good 10% more torque though. The real advantage is to run the heads and cam that is optimal for the stroker. In other words, taking true advantage of the extra cubes.

Even if you want to stay emissions legal, a stroker can give you great torque vs. a 350. Lingenfelter (R.I.P. ) did a great job of demonstrating this during the mid to late '90s.

 

Brett Bauer made a budget 383 for "96Z" that made somewhere over 400HP....do a search I'm sure you'll find it.

Costs for a build.....well, how much do you have to spend? Fully forged or cast and hyper?

There's some good rotating assemblies out there for under $2K. Machining, balancing, assembly, head work, parts, gaskets, oil, lube and all of the "little" things add up in a hurry!

I'd talk with Brett (SStrokerAce) and Seth at www.cmotorsports.com and see what they can do for you. Those are the only two folks I'd go with if I were doing a stroker out of house.

As far as HP....it really depends on your heads and cam. Generally over 400HP is what you should be looking at.

 

Actual flywheel dyno numbers on identical heads/cam are about 35 ft-lb torque and 5 - 8 hp. A 383 will 60' better than a 350 and feel much stronger seat-of-the-pants.

I once had a 8.4/1 360 carb'd motor in a 3rd gen that ran 11.94 at 114.5. With no other changes, I swapped to a 11.3/1 383 and ran 11.33 at 120.5. I'm not sure how much of the gain was compression and how much was stroke, but the 60' times dropped from 1.70 down to 1.55 with the same converter, gear, tire, etc. . .

As Josh said, though, you can match the heads and cam to the stroker and get even more.

For instance, you can get away with a larger head and cam combo with a larger displacement motor. If you build a 383, you can get the AFR 220's and a larger cam (230+ at .050") and still have tons of low-end and mid-range, plus alot of hp on top-end.

Mike