Mustangkiler

I know the 93 cobras have hyperteutic pistons does the all the other 93 5.0's have them as well and do the 94 and 95 gt and cobras have them too or they forged?

silver91gt

87-92 had forged from the factory, 93 and up had hyperutectic pistons.
there is nothing wrong with hyper-pistons, unless you are boosted more than 10 pounds, or anything over a 150 shot of nitrous.

sure forged pistons will give you peace of mind if you run a big power adder, but the hyper-pistons expand less making the piston-cylinder wall clearances smaller, allowing for less blowby.

Mustangkiler

Thanks, im looking to get a small nitrous kit for my 94 nothing over 150 probably one with 100 and 150 jets.

silver91gt

I have some hyperutectic pistons in my 91 (rebuilt) and had no problem running a 125 shot.
just make sure your fuel system is up to par.
the stock pump is barely enough to support the stock horsepower levels.
an adjustable fuel pressure regulator is a must in my eyes for any dry nitrous kit.

Low_5.0

make sure everythnig is set up proper...if not and you get knock..those Piston will be DUST!

88stangaruu

^^^Agree'd. Knocking and cast pistons is a bad combo. Knock with forged is bad enough, but with cast its worse.

ikeybmg

dont chance the hypers, they suck. get forged