Can I please get as much information about the building of a 383 stroker? Going into my 1991 RS I was wondering if I should go with stock rods or use 6 inch, would it be worth it, the extra cost? how much hp would I get from changing the rods? I am using a remanufactured block. I was curious about what parts I'll need, I'd like for it to push out around 500 hp. I have with the block, stock heads, and oilpan. I plan on beefing the heads up with parts from summit, roller rockers etc. The whole engine will be based on a budget build. I am a full time student so I need the best of performance, but expenses of engine as well. Will my stock rear end hold up until I am able to replace it? Where can I find a 5 spd manual tranny for it? thanks for all and any help!

 

I see that a lot of people have viewed this thread and so far no answers, can I pease have some good information?
feel free to pm me too!!!!!

 

Rods don't make power. In a high tech build they play a small roll maybe but for the most part better rods allow a motor to make more power, through the use of other parts, without the rods breaking.

For a 500hp build you are probably best to go with the H-beams.

 

Stock what heads?

The stock rear will handle 500 HP if you beef it up and if you don't beat on it.

Forget a T5, unless you don't plan on using any more of those ponies than an LG4 makes. A Richmond 5-speed could handle it. So could a T56.

"Budget" and "500 HP" don't belong in the same paragraph.

 

I thought bigger rods allowed for more compression? Would it be better/cheaper to go with regular summit pistons that are .030 over buying them in the 200 kit that includes gaskets, pistons, oil pump etc. and just use stock rods? In order to make a 383 Stroker, do the rods have to be bigger or can you use the 5.7 stock rods and still be considered a 383 Stroker or is it a 355? thanks

 

I was going to use stock 350 heads ported and polished, equipped with roller rockers, and replacing all the gaskets.

 

Stock "what?" 350 heads? There are about 2 dozen different factory 350 heads out there, and only 2 or 3 castings would support 500 HP on a 383.

The rod length doesn't affect displacement. Displacement is determined by the cylinder bore and the stroke produced by the crank. A 4.030" bore and 3.75" stroke with 8 cylinders produces 383 cubic inch displacement.

The rod length determines what pistons you use. 6.000" rods are arguably better than 5.700" rods, and both are better than 5.565" rods (factory 400 rod length). But, for a "budget" build, there is no reason to use anything but factory 5.700" 350 rods and appropriate stroker pistons - which happen to be the most common "383" pistons available.

500 HP, though, is a unrealistic goal for a "budget" 383 that you expect to beat on, and expect to last.

 

the difference in using a longer rod is for increased piston speed. what does that mean. at 500hp maybe 5hp. save the money and go with a 5.7 rod. yes get h-beam rods cause thats pushing it on eagle i-beams (so they say).
its the longer stroke of the crankshaft that makes its it a 383 instead of a 350. 350 stroke 3.48" 383 stroke 3.75"

 

The ideal connecting rod for a linear-to-rotating conversion machine is infinitely long.

Since you don't have an infinitely tall deck, you'll have to make some compromise with regard to rod length.

5.7" vs. 6.0" is not a significant compromise, and usually isn't worth the extra expense.

If you're getting rods and pistons anyway, compare prices between the two combinations.

 

So basically, to save time and money, use 5.7 rods, use regular .030 over pistons, and get a stroker (3.750) crank. Use Vortec heads, ported polished, (maybe roller rockers, are stainless steel better than aluminum? if so I've found some good sets at Terry Walters Performance Engines, for this setup, what ratio and stud do I need to use on them?) and get an XE268 Cam. I will be using this distributor http://www.summitracing.com/parts/SUM-850001R/
What intake should I use? I will also be using a 750 cfm carb do I go with a stock oil pan and oil pump? Any recomendations on headers? thanks for all the help as this is my first engine build. I am building it for my 1991 Camaro RS, it will replace the old v6 with blown head gaskets. I woud like the engine to push out around 400-500 HP the car will only be driven on weekends (sat & sun drive). I just want something that sounds good, runs really good, not totally KILL me in gas, and something to smoke a couple mustangs!!! I don't want a drag car pushing out 1,000 hp, just something with enough HP for me to play with, have fun and not totally kill me in gas.Thanks again for all the help, it will be greatly appreciated

 

i make between 400 and 425hp with my motor.

im running a 5.7 rod 383. so just a regular .030 over bore 350 block cast roatating assembly and hyper pistons.

http://www.summitracing.com/parts/CCA-K12-326-4/
this is my cam at the time is was marketed under an extreme energy but now its a magnum. a little more than the xe268 if i rember correctly. id say go with the k kit cause it gives you everything you need.

i used scorpion aluminum blue 1.5 roller rockers. had to use arps studs to clear the rocker arm body but stock length.
im also running a performer rpm manifold and a holley 750. sitting on dart iron eagle heads.

im happy with it. car has run a best of 13.07 @104 at 3700lbs with driver and sum mild traction issues.