TurboBerserker

iTrader: (1)

Scott Mills was selling an A2W kit that was on his HD (for an STS) last week or so -- I think he wanted $500 -- you'd need custom piping for sure, but that should be relatively cheap. Scott's kit was about the right size for your HP range too (~spearco 231 / 600ish HP I think).

Whippled 496

iTrader: (4)

Is he a member here and do you have his screen name? Any idea where i can get the intake inlet (where the throttle body used to sit) for my truck? The blower outlet will have to be ordered from Whipple for sure.

Whippled 496

iTrader: (4)

LOL...just noticed that SCOTT MILLS is his screen name.

PSM

iTrader: (3)

From what I've heard about the 8.1's is their pistons hate boost. Any one thats boosted them beyond stardard kit lvls has gone through pistons.

Whippled 496

iTrader: (4)

Wonderful..

Do you have any sites or posts to back that up? Im not questioning your statement, just want to see some of the testimonials and compare trucks from those who have had issues.

I cant believe how little information there is out there for these 8.1L trucks.

Thanks.

PSM

iTrader: (3)

I don't belame you one bit for wanting proof, lemme see if I can dig up some info for you.
One member on here has gone far with the 8.1 His name is Tie Rod. The 8.1 is very popular in marine applications and that is where you will find most info on them.

I believe it's due to the fact that the pistons are Hypereutectic Cast Aluminum and are very brittle

Whippled 496

iTrader: (4)

Yes, i know TieRod, and have talked with him on several occasions. He has done quite a bit of modding to his 8.1. New heads, cam, Intake. Not sure about the bottem end though, never talked about whether he changed pistons, rods, crank, or anything like that. I think if i could get this thing intercooled with with a few more psi, i would be content. If there is such a thing. I really want to get into the mid 13's without sacrificing reliability.

GMC_DUDE

There used to be a lot of info about this on GM-Trucks.com before they dum... er, I mean, changed their format. The problem, as I understand it, is not so much the hypereutectic-cast metal, but that the land between the piston top and the first ring is very thin, and breaks easily under pressure. Apparently the same is true of the Dodge hemi. Does anyone have a stock 8.1 and/or Gen III piston, and can measure the land to provide us with numbers?

Whippled 496

iTrader: (4)

Well, thats unfortunate. Looks like I may not be bumping the psi like I wanted to....

Whippled 496

iTrader: (4)

Well, according to these two pages....the marine 8100 and the automotive 8100 use the same hypereutectic-cast aluminum pistons. I know of a bunch of twin blower 8.1's used in marine applications.

http://www.gm.com/automotive/gmpower...4_8100_ind.pdf

http://www.gm.com/automotive/gmpower...std_marine.pdf

Still looking for more info.......