I am looking for some help on all of the different combinations that you guy's are running in your lS1's. If you could list some of the different rotating assemblies that would be great. Don't list the brands but what the spec's are. I am asking for this so we can get a good feel of what you guy's will need for your short blocks. We are looking to stock as many pistons as possible for the LS1's. By doing this it will limit the amount of custom pistons and lower the cost for you guy's. Because now they will be stocking shelf pistons. Here is what I am looking for.

Bore -
Stroke -
Rod Length -
Wrist pin diameter -
Chamber volume -
Compression ratio -
Turbo, Blower, N/A or Nitrous - (which one are you using)
Intake diameter -
Exhaust diameter -
Use for engine - Drag, Street, Little bit of both

Any input would be great.

Thanks,
Chris Gelineau
Diamond Pistons
877-552-2112 Toll Free

 

This is what I need:

4.060" bore
4.000" stroke
6.125" Standard SBC rod Floating pin
68cc Chamber
11.5:1 Comp ratio
NA with some mild N2O
2.08" Intake valve
1.60" Exhaust valve
Little of both

Thanks!
Ryan K

 

Bore - Start with the stock overbore 3.905, 4.125 is a All Bore and 427 size, 4.060 is 408 size in the 6.0L truck blocks

Stroke - Stock and 4.000 stroker

Rod Length - 6.125, 6.200, 6.250

Wrist pin diameter - Stock SBC .927

Chamber volume - Flat tops with valve reliefs for N/A, probably -18 to -20 inverted dome for Blower

Intake diameter - for stock engines 2.055, for modified large bore 2.08

Exhaust diameter - 1.6 that's really as big as they go.

Use for engine - Drag, Street, Little bit of both

Both.

If you can do the designs with nice thick piston decks so we can throw some power at them, but also look at weight. If they are for a stock NA motor with out N2O then they need to handle 550hp and be light, on N2O obviously they are a different piston then. I'm a fan of short skirts to reduce drag. The rings lands should be made to fit 1/16 1/16 3/16 rings on a stock overbore. Or .043 .043 3/16 rings for those who want to go that route.

Hey, I'm more than willing to add my imput.

Bret

 

Bret, Thanks for the imput. Any reason you wouldn't want to use the 1.5/1.5/3mm ring stack? On a street engine we do not recommend using the .043 rings, just due to ring life. If you are racing it then the .043's are a good way to go. If there is anything that we can do for you let me know.

Ryan, Thanks for your input also.

Thanks,
Chris Gelineau
Diamond Pistons
877-552-2112 Toll Free

 

stock bore would be nice too....lots of these motor could just use a deglazing and not need boring. I know my machine shop did not do the best job with the torque plate and all.....my car sounds like a powerstroke diesel from one cylinder....but I got powerstroke torque so i guess i'll live

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by DIAMOND:
<strong>Bret, Thanks for the imput. Any reason you wouldn't want to use the 1.5/1.5/3mm ring stack? On a street engine we do not recommend using the .043 rings, just due to ring life. If you are racing it then the .043's are a good way to go. If there is anything that we can do for you let me know.

</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">First let me get to the last post. Yes a stock bore would be nice, because most only need a deglaze, but the cost to do it more is not that much and you can get a better cross hatch, but only if you check the surface finish roughness, most places can't do this so, don't worry about it.

Well I guess the reason I dont like the stock 1.5 1.5 3.0 is because Total Seal doesn't have a gapless ring pack for that. That's what I use and i will stick with them on everything, maybe if you have some ones turned to size on the shelf as blanks and just finish them off by putting in the valve reliefs and ring grooves that would be awesome.

If you want the exact piston I would use it would be.

3.905 Bore, 3.622 Stroke, 6.250 Rod, .927 Pin, 1/16, 1/16 3/16 Total Seal Ring Pack, all up tight to the top of the deck and made for N/A applications. On top of that, I want really short skits and some extra weight taken out of the piston, now if those would retail for $700 that would be awesome! That would be my rebuild piston.

Bret

Chris, I have your e-mail from earlier this week. I will get ahold of you next week sometime and we can talk about this further.

 

Chris,

Great way to get started! Give the people what they want.

We are looking to put togther a few of the following combinations

4.080" Bore
4.000: Stroke
6.125" Rod Length
1.125" compression height
12cc dish
Oil ring suppport
Accumulator ports
2618 alloy

As soon as cc the heads for that supercharger truck we spoke about I'll detail out a piston design and send you an order!

Howard
Redline Motorsports

 

As far as rings are concerned, Give me STD SBC ring sets, they have had more developement time and the parts are more widely available. At least for a 4.060 bore.

And a much better selection.

And 4.060 bore with a 4" stroke is 414".

Ryan K.

<small>[ September 26, 2002, 10:33 PM: Message edited by: Ryan Karasek ]</small>

 

Thanks for the input guy's keep it coming. So far all of these combos look good.

SStrokerAce - We can do what you are looking for. You are going to like our pricing. That piston you just described would retail right where you are looking for it to retail.

Thanks,
Chris Gelineau
Diamond Pistons
877-552-2112

 

Chris, Hopefully we can talk.

Right now I'm busy in the dyno, it will all be over soon enough.

Bret