[race10]

Im in the process of making my 350 into a 383. So far I have had the Motor bored 30 over (which was a while ago). I now have a 400 SB crank which is in the process of being shaved and I also have the cam out of the same 400. I have the 5.7 rods but wasnt sure if I should go with the 6 inch rods. So if anyone could give me some tips that would be great.

Thanks, Spencer

[327NUT]

Spencer....not blowing you off but if you would do a search for "383 stroker" or "6 inch rods" you'll find a million threads on the subject. Good luck on your project.

[Double_v23]

Yeah this topic is very common here,

You could have purchased the whole rotating assembly and it would have been stronger than your 400 crank and rods from eagle for about 700 bucks

That is balanced and everything,

But you are already set on using that crank so....

1. if you use 5.7 inch rods there may be a clearance problem with the camshaft, you will need to clearance the rods and then pull it all back apart and have it balanced.

2. Throw the Camshaft out, and get a different performance one.

3. On second thought call the machine shop and tell them to stop working on your crank.

then go to ebay and find an Eagle 383 rotating assembly for 700 bones and you will still probably save money.

The Eagle kit comes balanced and stroker clearanced, has bearings and rings and a flywheel and dampner, and is way easier and safer then using old used parts.

[PatM]

In general, I agree with Double V23. But you might also want to check out SCAT, they may have a similar pre-balanced assembly. Secondly, keep in mind that the 6.00 long rods are almost certain to push the wrist pin into your oil control ring. And, Lastly, you may still need to do a little clearancing of the block around the pan rail and/or bottom of the cylinder bores.

Why didn't you just build up the 400??

Pat

[autoguy139]

Spencer, I put a 383 stroker together for my 88 vette. Dynoed at 423 hp and 394 lb ft of torque. SBC 400's small journals are good for revving with little friction loss but won't handle what you want to do with it. Skip White engineering sells a complete Scat Kit with High quality recip parts for less than the machine work and transfer parts. Still need to clearance the block for the rod bolts but the kit comes with the strongest bolts and rods available already clearanced, and the rotating assembly is already balanced to tight tolerances, at a decent price, so less machining of the block is necessary. Plus they answer their phone and speak intelligently!!!!!
Good Luck Ken

[vinniekq2]

You should plan for an end result before you start machining.How can you bore a block before you have the pistons? The 400 block is easier to work on if its in decent shape.If you want serious power then the 400 block might be out,same with the stock crank. The 383 is a decent engine in any configuration,though reliability may come into question with some cheap parts.
what is the end result you are looking for?
keep your budget realistic,roller cams are almost essential for many reasons,
first 2 being oil quality and power,,,
Ill recheck this thread later from work

[ssmonty]

Original post is 5 years old. Is a certain someone a salesman?

[vinniekq2]

SS thanks ,,,I was duped again lol,
I recommend no one buy anything from autodude