I am building a 4.6 block for my truck that I plan to supercharge. I have someone who will sell me some low milage (5000) 2002 Lightning pistons with a new ring set. He says they are forged and teflon coated.
Are they forged?
Will they fit my 4.6L?
Thanks in advance for any help.

 

You can use them, but why would you want to?

If you are building an engine, get a set of CP pistons

 

A very good price and I will not be running more then 9 lbs of boost. Do you know if they are forged?

 

They are forged im pretty shure.

 

They are forged, BUT why skimp on pistons? Do it right the first time and buy the CP or does JE make pistons for the mod motors too?
"only 9 psi" seems to turn into 12psi, then only 15 psi real quick.

 

OK thanks guys for the input.

 

FYI-

The L piston should be very similar to the '03 Cobra piston which is holding up with ~23 psi and 730 rwhp (so far).

 

That car has less than 1000 miles on it

 

And that tells you what? That it's going to fail? Is the L piston considered weak? Do you know anyone who has any info to indicate that the forged L piston is worse than some aftermarket piston?

Please, enlighten us...

 

piston wars

 

The car you are referring to made that pull less than a week ago, and means nothing in terms of long term reliability, but hey they guy building the engine can put whatever he wants in there, its his money, but if you are going thru the trouble and expense of building an engine, why skimp on something like pistons?

Just my 2 cents

 

Well I decided to go against the pistons. Not because of any worries about their strength but because I want my starting CR to be about 9.1 to 1. I have PI heads to put on the engine so the stock pistons will make the CR 8.5 to 1 if I understand correctly.
Thanks for the input.

 

There are many Lightnings out there with stock pistons running very strong. If using Lightning pistons in a motor is considered skimping, then there are a lot of tight wade Lightning owners out there.

 

It's not that L pistons are bad. Its just that he will have the engine apart, so why not go with alittle better quality product.
This is a moot point anyway, as it looks as if he's going w/ a higher CR.

 

I haven't heard of many piston issues in L's, usually rods. But like someone else said, why not put stronger pistons in when you change the rods. There are other parts that follow the same scenario. Check out the engine build up section on the tuner sites for popular parts to upgrade.