Generation IV Internal Engine - Anyone have weights for stock LS3/L92 pistons?




Whistler
04-30-2012, 06:35 PM
Does anyone have the weights for either of these pistons?

I'm trying to find a decently priced forged piston I can install in an L92 short block with only a re-hone at most and no balance work.


PSI GUY
04-30-2012, 09:17 PM
I have some in a box here somewhere, I installed some Mahle 4.070" pistons in mine to repair a scuff in the bore. Mahle also sells a stock bore piston, i paid $650 for mine with rings. If i remember I'll weigh one tomorrow after work

85MikeTPI
04-30-2012, 09:28 PM
I pulled my entire stock L92 rod&piston and it was 1319g. The stock rods are listed as 639g so the piston/pin/ring pkg should be 680g


bww3588
05-01-2012, 02:16 AM
Going with a forged piston over stock hyper pistons will be a significant weight difference.

If the stockers are over 600 like someone suggested, forged pistons will be significantly lighter.

Unless you can find something dead nuts the same or +/- 10g, I wouldn't install them without balancing.

Inadvertently, I ended up with pistons 65g lighter than stock in my ls1 without balancing, and It hammered itself to death in 1k miles.

KCS
05-01-2012, 06:34 AM
Mine weighed in at 495g and had a 145g pin.

allblowdup
05-01-2012, 10:39 AM
Mine weighed in at 495g and had a 145g pin.

Mine also.

Whistler
05-01-2012, 10:40 AM
Thanks KCS!

85MikeTPI
05-01-2012, 03:59 PM
Mine weighed in at 495g and had a 145g pin.

Was this including the ring pack and pin clips? My Mahle ring pack and clips were 37g so that would put your 630+37 = 677 pretty close to my 680g.

KCS
05-01-2012, 05:06 PM
Was this including the ring pack and pin clips? My Mahle ring pack and clips were 37g so that would put your 630+37 = 677 pretty close to my 680g.

Nope, that was before rings and c clips