Generation IV Internal Engine - Sponsors, looking for LS1 dome Pistons




Black_Phantom
04-07-2012, 01:56 AM
Hey every one,
I was wondering if any sponsor on here have dome Pistons for 6.0L iron block with stock Rods and LS3 heads.
Looking for somewhere around 13.5:1 on methanol.
Thanks


6898camaross
04-07-2012, 03:09 AM
First time I've heard this question. Now I'm kinda interested so a free bump for you.

Black_Phantom
04-07-2012, 03:15 AM
First time I've heard this question. Now I'm kinda interested so a free bump for you.

i'm gonna try something new and push it to the limits and see how much i can squeeze out of it.


87silverbullet
04-07-2012, 07:05 AM
Is the block .030 or anything?

You do know that most ls3 pistons are floating and the stock rods out of an lq motor are press fit?

Plus, I'm assuming you are going stock stroke since you are using stock rods

Edit: I just thought of this, you might have a hard time finding a piston to fit those requirements because of the large valve that an LS3 head has you cannot get a deep enough valve pocket and get that kind of compression. You can get one with pump gas like compression all day.

FlatPat
04-07-2012, 03:24 PM
I'm kind of looking for the same thing and run on E85. I came across some Diamond Nitrous Dome Top pistons. They are marked as LS1 pistons and have three head types listed: LS1: 6.0 Liter Cylinder Heads, LS6 Cylinder Heads, and AFR LS1 Cylinder Heads. The bore sizes were 3.905, 4.000, or 4.030 all 4.000 stroke with 6.125 rods. The 3.905 ran 13.3 with 62cc, 12.5 with 66cc, and 11.9 with 70cc. The 4.000 ran 13.8 with 62cc, 13.1 with 66cc, and 12.4 with 70cc. The 4.030 ran 14.0 with 62cc, 13.3 with 66cc, and 12.6 with 70cc. Seems as though outside of LS1 higher compression is hard to come across.

Not meaning to hijack but follows the same thought process. I would like to know if there is anything preventing the use of these pistons in a LS2 or LS3 block? I'm assuming I can get aftermarket rods and crank to make it all work.

Black_Phantom
04-08-2012, 04:03 AM
No one

87silverbullet
04-08-2012, 08:15 AM
I'm kind of looking for the same thing and run on E85. I came across some Diamond Nitrous Dome Top pistons. They are marked as LS1 pistons and have three head types listed: LS1: 6.0 Liter Cylinder Heads, LS6 Cylinder Heads, and AFR LS1 Cylinder Heads. The bore sizes were 3.905, 4.000, or 4.030 all 4.000 stroke with 6.125 rods. The 3.905 ran 13.3 with 62cc, 12.5 with 66cc, and 11.9 with 70cc. The 4.000 ran 13.8 with 62cc, 13.1 with 66cc, and 12.4 with 70cc. The 4.030 ran 14.0 with 62cc, 13.3 with 66cc, and 12.6 with 70cc. Seems as though outside of LS1 higher compression is hard to come across.

Not meaning to hijack but follows the same thought process. I would like to know if there is anything preventing the use of these pistons in a LS2 or LS3 block? I'm assuming I can get aftermarket rods and crank to make it all work.
You can find LS1 style pistons all day for high compression because ls1 heads have a smaller valve and more pistons are available for them. LS3 pistons are specific to LS3 heads because of the large intake valve so not many are available and none are out there for high compression. You will most likely have to get a custom piston made to get high compression.

No one

I have been through Wiseco and Diamond piston catalog. They are the two leading piston manufacturers for LS pistons. They have pump gas compression pistons for LS3 style heads all day. So like I said before you will have to get a custom piston to attain your goal.

driver56
04-09-2012, 08:56 PM
A piston like that is definately custom. Call RaceTec, nice people and will build you whatever you need.

87silverbullet
04-09-2012, 10:07 PM
A piston like that is definately custom. Call RaceTec, nice people and will build you whatever you need.

They build all their pistons out of a 4032 alloy. I didn't see a 2618 alloy for nitrous or turbo applications.

driver56
04-09-2012, 11:58 PM
Sorry, didn't see a mention of juice or boost, just alky. Besides, plenty of power adders being used with just the stock hyper pistons.

Black_Phantom
04-10-2012, 01:46 AM
I'd rather do 2618 alloy because i'm planing to try turbo next it's fun experimental project

87silverbullet
04-10-2012, 12:28 PM
Sorry, didn't see a mention of juice or boost, just alky. Besides, plenty of power adders being used with just the stock hyper pistons.

The good thing about the 4032 alloy is that it doesn't expand much so you can make the tolerance a little tighter.

Not saying it couldn't be used in a power adder application, its just that you can't lean on it like you would a 2618 alloy. All the guys on stock bottom ends have very conservative tunes. Good fuel and low timing.

82swbLQ9
08-06-2012, 09:53 PM
bump. looking for the same pistons right now. i see domes from wiseco with a unifit valve pocket for 4.00" stroker applications but nothing for stock stroke with a 6.125 or 6.098 rods. just change the compression height and if necessary the skirt of the piston. but i doubt the skirt would have to be changed

bww3588
08-07-2012, 12:11 AM
Custom pistons are nothing to be afraid of. Last I checked, diamond charges 50 bucks over the cost of a shelf set to make a custom piston. Just figure out your negative dome cc's, call them up and see what they have to say.