Z28harcor

I took my spare lt1 apart and on the back of the piston near the skirt it says mahle.. Did they Come stock with flattop mahle pistons?? 4 valve relief

jewbacca

iTrader: (5)

Not sure if they were produced by Mahle (someone with vastly more knowledge will probably chime in), but it could have been a rebuild.

englundjd

iirc the LT1 had mahle hypertunic slugs in them from the factory

Z28harcor

No ****.. I didn't know that.. Wonder why they did that.

Wicked 94TA

iTrader: (5)

I'm pretty sure the LT1 pistons were Mahles, I know the early ones were for sure. A friend of mine had a stock LT1 out of a '93 he torn down recently and they were Mahles, engraved right on the side of the piston.

shbox

Because that is who they chose for the supplier. Why is it a head scratcher?

96capricemgr

iTrader: (1)

Mahle is a HUGE OEM supplier

jewbacca

iTrader: (5)

Learn something new everyday!

Z28harcor

Never said it was a head scratcher? Why does everyone on this site act like a ******* wise guy?

leadfoot4

iTrader: (1)

Because in this particular case, many people, myself included, weren't aware that Mahle is a big OEM supplier. Most of us know of them due to their involvement in the high performance aftermarket, where cost is no object, and we also know that the GM "bean counters" usually keep a pretty tight grip on the purse strings. Therefore the surprise to find Mahle pistons in a high volume GM engine.

96capricemgr

iTrader: (1)

Pretty sure Mahle is the largest piston manufacturer in the world and provides the original pistons for a LOT of engines not just the LT1 and done so for a long time. Been common knowledge for a couple decades.

shbox

Didn't you say "Wonder why they did that"? That's head scratching.

Gee, I thought what 96capricemgr said below. My question is why does everyone on this site have such a short fuse?

96lt1m6

iTrader: (31)

understanding the business end of it all GM contacted various piston manufacturers and accepted bids and proposals from all of them. GM wanted a durable,lightweight piston with tight tolerences to handle the higher rpm Lt1 and Mahle gave the best deal its not like they are Forged racing pistons.

KW Baraka

iTrader: (7)

That's a fact!

KW

quik95lt1

iTrader: (7)

yup I was quite supprised my self about 8 years ago when I pulled my car apart when I bought it stock.....my motor was a GM replacement 4 bolt cause apparently somebody blew up the original and I figured the rebuilt motors only had mahles but turns out most had them right out of the factory in the 90's