gonna be tearing my engine down for a rebuild soon. im buying eagle 6" i beam rods for it. i need a good set of lightweight pistons for it. dont need anything exotic or anything, going with a mild cam and no spray or anything. thanks -dave

 

Most economical choice would be the Keith Black hyper pistons. Lighter than all the forged pistons in their price range. Plenty tough too.

-Mindgame

 

The KB signature series are nice pistons, but if you plan on anything extra ever they will not hold up to too much spray or boost.

 

I ran the KB hypers in a bracket engine with a 150hp shot plate-system for a whole race season without any problems. Refreshed the motor, ~.0003 on the bore with a hone, changed the pins and rod bolts, zygloed the pistons (they were good) and put it back together. Ran it for another season, then found the pin bores had a little elongation. But not bad for that kind of abuse. Car ran very consistent 10 second 1/4's, ~3000 lbs and on a really tight budget build.

So I'd say they can handle a little nitrous if your tune is ok. 150 isn't what I'd call a big shot though.

-Mindgame

 

Agree with 'game.

Rich

 

thanks for the advice -dave

 

Thats great, I havent heard alot of people have confidence in them, but I havent heard any bad stories on them either.

About 10 years ago before when they were just Keith Black diamonds series (or whatever) We had a set in a 355 TPI motor the car was putting about 360 hp to the wheels. It ran good for 6 months then it just shattered !!! We tore it down and discovered a bent valve up top and a shattered piston below. The timing chain had come off the cam and held a few valves open one piston was shattered, 6 others had a scuff on them from valves, but no cracks or other signs of destruction to the pistons.
I am using them now in my 383,I was planning on switching to forged later to run a little hose or some very mild boost (5 to 6 psi). I may rethink that if you have this kind of confidence in them Mindgame.