1C3 MAN

iTrader: (4)

hey guys i just got a deal on a 383 shortblock with 500 miles on it..
It has eagle forged i beam rods,eagle forged crank.
but the pistons are keith black and are not forged.

so what is a good set of pistons and rings for my 383. i plan on spraying 150 shot of nitrous.

links would be awesome.

thanks guys

TWS

iTrader: (63)

I like Diamond forged pistons. They are made of 4032 high-silicon forged aluminum so they don't have excessive thermal expansion like old forged pistons used to. Have used Wiseco and they are fine too.

SS MPSTR

iTrader: (1)

Mahle.

1C3 MAN

iTrader: (4)

where can i get diamond forged pistons at. i looked on summit,jegs and a few other places and didnt come up with anything.

SpeedDensityZ

iTrader: (5)

Any forged piston will do fine with a 150 shot. I ran Speed Pro's in my last 383, they were like 350.00 with a set of rings. I got them off Summit's website. Seem's they have went up on price quite a bit. Here's the link to them.

http://www.summitracing.com/search/P...+forged+piston

1C3 MAN

iTrader: (4)

Okay guys i have been looking around at all different brands. and i am kinda lost. there is a tone of options I.E. flat top,domed,dish top and a bunch more.

can anyone school me on the differences.

also my rods are 6.000 if that makes a difference. also how do i tell what the compression ratio will end up being?

SpeedDensityZ

iTrader: (5)

Here's a calculator.
http://www.wallaceracing.com/cr_test2.php

If you're going to run all motor+spray I would try to stay under 12.0:1 to run on pump gas and a mixture on the squeeze. Depending on the deck height of the block a flat top with about a 5cc relief, .000 deck, 58cc head and a .039 head gasket you are at 12.02:1 which is pump gas friendly but you might want to run a 50/50 mixture of 100 and 93 on the spray. It depends on alot of things. I would run a flat top piston if it were me.

hvyss

I am using Mahle flat top coated forged pistons with my 385

1C3 MAN

iTrader: (4)

Okay thanks.

but where can i get some forged flat top pistons with a -5cc relief. I can only find ones with -4cc relief

1C3 MAN

iTrader: (4)

Okay i found some srp forged flat top pistons on jegs for 458.99

867-138093 thats the part number

are these what i need. also they dont come with ringer so what rings would i need?

also i was reading that the rings will need to be gaped for nitrous if i am going to run nitrous. But im not going to be putting the nitrous on right away. And even when i do it will only be sprayed on rare occasions.


also is there anything els i need?

hvyss

http://www.cnc-motorsports.com/category.asp?CtgID=16042
check these out

Matts94Z28

iTrader: (6)

Those are what I run.

97LT1

iTrader: (3)

I am running a mahle -5 cc piston

1C3 MAN

iTrader: (4)

Sweet thanks for the help.

but i just talked with lloyd again and he said the probe -4cc pistons will work too.


can some explain to me what the relief on the piston is for exactly. and will -4cc work or should i go with -5cc.

One more thing. why are the probe pistons only 350.00 and the mahle are 650.00 but there made of the same metal? cause i dont want to cheap out on pistons but on the other hand i dont want to be paying double just for a name.

TWS

iTrader: (63)

The reliefs are for your valves. Look at the top of this piston and you will see two reliefs. The larger one for the head of the intake valve and the smaller one for the exhaust.



The cc measurement refers to the volume of these reliefs.

Depending on your build you might get by with cheaper pistons, but for a high performance build that might see nitrous or FI, I would only buy Diamond or Wiseco. This is just based on my personal experience and I get into my "comfort zone" with parts that have worked well in the past. There are even more exotic (higher $) pistons out there, but for my purposes and budget Diamond and Wiseco have been good and reliable.

1C3 MAN

iTrader: (4)

Anyone have experience with the Probe forged pistons.
they only have a -4cc relief tho. will they work?

also i can only find ones that are for 5.7 inch rods and i have 6.000 inch rods. anyone know where to get um?

Wicked94Z

iTrader: (26)

I like either JE or Ross... JEs are in my motor

fex77k

iTrader: (2)

JE, Wiseco, or Mahle are the only ones I've ran.

1C3 MAN

iTrader: (4)

So nobody is running the probe pistons?

i know they are popular in the ford would but just wondering if anyone is running them in their camaro.

I really like the price but i understand you get what you pay for. but on the other hand i know that sometimes your just paying for the name.

Tireburnin

iTrader: (42)

You can always call the manufacturer and ask them for something custom to fit your application.