beast69camaro

iTrader: (14)

So for christmas, I got a set of speed pro light weight "power forged" 383 pistons for 5.7" rods, 12 cc dish, summit part# TRW-LW2605F30.

Future plans for my 11.6:1 SCR 383 build include getting a set of Ai 190's head/custom cam package after income taxes for about a 450rwhp/450rwtq setup, and I'm wondering if these pistons will take it. They seem kind of cheap and are going to require some deburring to remove sharp corners on the crowns, and I am considering swapping them for something else.

Is anyone else using these pistons that can vouch for power/rpm handling capacity? Also has anyone tested them for nitrous use? (I know they are forged, but I wanna be sure, cuz I'm not sure how stout the included tapered wrist pins are). Neither Speed Pro nor Summit has been able to help me w/ this.

Recommendations are also welcome, as I'd prefer something w/ similar dish size for 6" rods in the under $600 price range.

FASTFATBOY

iTrader: (23)

Probe Pistons are nice for that kinda money, call the folks who made to piston, they will tell ya.



David

396D1SS

iTrader: (21)

I ran speed pro forged pistons before with a little over 400rwhp at the time and a 200 shot. Pulled the motor with about 16,000 mi and it looked almost new. I say go for it

LT1MAN

iTrader: (6)

i have speed pro forged in mine.

beast69camaro

iTrader: (14)

yeah, I'ma use 'em. Actually found an article in an old CHP where they used these exact same pistons for a 500hp 383 build. I'm sure they'll take it. My eagle forged crank arrives tomorrow

seawolf06

iTrader: (8)

I wouldn't put more than 150 shot on those in that large of a motor, but that's just me.

beast69camaro

iTrader: (14)

yeah, I am debating whether or not to put nitrous on it at all, unless someone else has done it w/ these exact pistons (not speed pros in general) and can vouch. They've been tested at my expected HP levels, but I am unsure about those tapered pins w/ nitrous. Anyone?

1997bird

iTrader: (2)

You need to call the manufacture of the piston's. Silvolite makes both the Keith Black piston's as well as the Speed Pro/Diamond pistons. They would be able to tell you the limits of your pistons.

NemeSS

iTrader: (127)

have run 10's on those pistons, bought from Jeg's
with 2 stg. N20 system and 11:1 scr
but with safe, proper tune and custom comp cam for n20
cant say u will have similiar results, but they will hold up fine with safe and proper tune made 650 rwhp with those pistons on n20

beast69camaro

iTrader: (14)

1997bird: I thought Federal Mogul made/owned Speed-Pro (formerly TRW). I will call anyway, just to check it out. Do you by chance have a phone# for Silvolite?

NemeSS: those are impressive numbers.....you made that kind of power w/ no problems? How long have you been running those pistons w/ that kind of abuse?

1997bird

iTrader: (2)

Go to www.kb-silvolite.com/fieldreps.php?action=s to find a field rep near you.