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I am attempting to build a 383 stroker for my 91 s10. I want to use an aluminum 350 block for the base and build from there. Does anyone know some good tips or maybe some good kits that will really help? This would be my first engine build so any advice will help.
 

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I am attempting to build a 383 stroker for my 91 s10. I want to use an aluminum 350 block for the base and build from there. Does anyone know some good tips or maybe some good kits that will really help? This would be my first engine build so any advice will help.
I would nix the idea of the aluminum block.


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Add some AFR or Profiler heads and a fairly mild hydraulic roller cam = 500+ hp for the street. That will move an S10 right along if you get some sticky tires. Otherwise it all goes up in smoke.

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Who’s aluminum block there are quite a few makers they have different dimensions that vary from pretty stock to not so much.

The 3000 dollar Speedmaster is pretty much a stock dimension block.


The Brodix as seen in the link below is highly variable from stock with a lot of options.

I’d say for a first time build this is rather lengthy step technically and financially.

Bogie
 

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If you want a good block then go with a Dart SHP iron block. The block will need some final machining done but with a good machine shop for anything street related its more then enough to give you what you need. Not nearly the cost of an aluminum block and for a street driver I don't think an aluminum block would be needed.

Just my opinion there. If you go with the 4.0 inch bore block and want a lot of builds out of it, you can go .040 over then .060 over and if you can even buy .080 custom made pistons you can go that far over and still be fine or after that you can go to 4.125 bore which is a stock 400 bore size. The 4.0 inch block is the same block as the 4.125 block. I have seen a Dart block bored to 4.185 and the cylinder were very thick and are siamesed so no coolant goes between them and makes them very strong and able to handle bigger bore size with out worry.

Dart just does not make the bore as big and sells them both ways for either a 350 build or whatever cubic inch you want to make it in relation to stroke or you can get the bigger bore block and make it a bigger cubic inch build right off the bat depending on what stroke you use for crankshaft.

You can use a oem roller setup with it and you can buy it with either a two piece rear main seal or the one piece rear main seal. Regardless of what one you choose they are already clearanced for a 3.750 crankshaft and make a strong foundation with the right rotating assembly for in excess of 500 plus horsepower and can handle it with out problem if built properly.

You can make a 377 right of the gate (4.0 bore x 3.75 stroke) or have it bored .030 and make it a 383 stroker or you can make it a different 377 which is called a de stroke with a 4.125 bore x 3.48 stroke and it makes a very fast winding high horse power and still a lot of torque motor or you can start out with it being a 400 cubic inch small block or if you get some extra clearancing done to the block and stuff you can get a 4 inch stroke crank and build with the 4.125 bore and get a bigger sized cubic inch small block.

It all depends on what your wanting to do with your truck and build. The s10 will fly with a bone stock 350 vortec with nothing else then the motor with a carb on it and burn tires and go fast all day long. With more power and its light body it does not take much to make it go. Try not to make the mistakes like I have and go too big on things as I have done so over the years and ended up not liking my choice and ended up spending even more money to correct said choice and go smaller on things and less big horse power numbers and built it more realistic for what I actually do with it then living in a fantasy world where its never used right with what it once had.
 

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Aluminum blocks are hard to find and usually super expensive. I'm not knocking your choice, and spend money where you want, but the 80 lbs you save will cost you about 20 times just starting with an iron block.
 
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