What are the best Pistons for street use in a 383 using pump gas? Just a mild build using 516 heads or maybe 452. Cam choice is about 220@050 with dual plane weiand intake and 440 source distributor. This will go into a B body or maybe a pickup truck. Thanks Mopar lovers!

Check Icon, they had some higher compression 383 pistons available for awhile, not sure if they still stock them or not.

speed-pro 2315 is probably the best general use piston. reality is that there are other options for a more specific build but if i was looking for a reliable easy install piston the 2315 would be hard to beat. i like hyper pistons for street use, beat the snot out of them without issue, but you must follow the instructions in the literature. i don't think you need a high dollar piston.

Dunno on Icon pistons, but KeithBlack offers for sure hypereutectic pistons for 383. Even domed as far I recall. They use to be found on $350-400 rate shipped. That's not a huge invest over stock replacements and way less than forged units rated on $600-700

The ICON 687KTD is likely the best "Forged" performance piston for the price.
ICON 687KTD 1.912" CH, -4.5cc valve/dome, 674 grams 1/16", 1/16", 3/16" ring pack. $664.99 (price includes piston rings)
https://www.summitracing.com/parts/uem-ic687ktd-030
This has a slight dome, but overall compression is not that high. with a 84cc head like an Edelbrock or open chamber stock head (usually > 84 cc chamber) and a 0.040" head gasket, compression ratio is only about 9.5:1

The Diamond 51900 is a real nice forged flat top piston, but also expensive at $1086.62 (price includes piston rings)
1.916" CH, and 4cc valve reliefs, so compression around 8.8482:1. Using a 0.020" head gasket bumps compression to around 9.2339:1
This would be a good choice if using heads with < 80 cc chambers.
https://www.summitracing.com/parts/dpp-51900-8


The KB Hypereutectic are slightly less expensive (most listed prices do not include piston rings), but use the wider 5/64", 5/64", 3/16" ring pack
The KB 400 is sort of like the ICON 687, but compression height is less at 1.908", and dome is a bit larger so -6cc overall chamber difference. Overall the compression ratio is just a tad higher than the ICON 687. My sample calc = 9.5298:1 compared to the IC 687 = 9.4793:1
At only $376.99 This would be the best piston for the cost. For a mild build like yours, this would be a good choice if using head with 80+ cc chambers.
https://www.summitracing.com/parts/uem-kb400-030/make/dodge

The KB 162 is a Flat Top piston. 1.908" CH, 5cc valve reliefs, so lower compression around 8.6131:1. 0.020" head gasket, around 8.995:1

The Compression ratio(s) assumes Block height of 9.980", 4.28" bore (0.030" over), 3.380" stroke, 6.358" rod, 9.764cc head gasket volume (about 0.040" thick), 84 cc cylinder head volume

The Speed-Pro 2315 would be the highest compression "Flat Top" piston, and is likely the heaviest piston choice. The lack of valve reliefs is not an issue with mild cams, but can be a problem with larger camshaft profiles.
CH is 1.920, and using same assumptions above Compression ratio = 9.2499:1
The Speed pro is $445.99 without rings, and rings might add another $100+ so around $100 less than the ICON piston, but the ICON had many more performance features.

dunno on shipping thought

https://www.cnc-motorsports.com/kei...bb-chrysler-383-dome-6cc-bore-4-250.html

The Icon 687 has a net positive dome volume and will give a 0.5 higher compression ratio than the KB400 which has a net zero dome volume. Both decent choices as is the 2315.

UEM makes several lines of pistons: Keith Black, ICON, Silvolite. I've used many sets of KB pistons and Silvolite too when on a budget and have had good success with all of them.

I know UEM makes all those, I'm KB user. I just don't know the options from ICON, because they are never on my budget, so never search for them LOL.

2315 don't like valve float