TurboGoat

What are your opinions on the best pistons and rods for a forged 346 running a 76gts

using 317 heads, would like the compression to be 8.5to 9

Pro Stock John

iTrader: (34)

I'm running custom Diamond pistons and some 6.125 rods + 70cc heads and have 8:1 compression. I had about the same compression when I had 317 6.0 heads. When picking pistons you just have to make sure the manufacturer says that their pistons can support your power goal. I have also heard good things about Mahle and JE pistons.

SuperZ

iTrader: (2)

I am running a Mahle -16cc dish with stock heads for 8.7 comp

bumpin_records

iTrader: (19)

Im running JE custom turbo pistons

mightyquickz28

iTrader: (8)

I'm looking at/for pistons for my T76 enhanced LT1. The LT1 stock head CC is 54cc and I have a 6.0" H-beam rods. How in the world are you guys getting that highly desirable SCR with those long rods in the LS1's with only a 16cc dish on the pistons? Is the LS1 Piston pin just down on the slug so far that you end up with that figure? Also, what prices are you seeing typically for the JE/Mahle/Diamond sets? And what Rings? Hellfire? I found one piston vendor that stated with my setup (383, highly ported stock LT1 Castings with 54cc chambers, 6.0" rods, .049 head gasket compressed height) that he could only get me to 9.3 SCR unless I dropped down to a 5.7 rod.
THanks guys. As always, great responses from the best.
David K. Wilson
'94 Z28 383 A4 3.42
'96 Z28 383 M6 4.10 - T76 being installed

stevieturbo

I used a Mahle/Callies combo in my 346. No complaints whatsoever. Very nice bits of metal lol

FSTR-THANU

iTrader: (9)

Flawless performance up to 1500++hp!!!






Tom

HAMRHEAD

iTrader: (8)

I am using custom diamond pistons and callies rods

Turbo LS1 SS

iTrader: (7)

custom diamonds and scat

BIG BAD BLACKSS

iTrader: (4)

Diamonds and eagle H beams with the L19's here.

What do you guys specify as making your diamonds "custom" Did you order em for different ring sizes, thicker ringland, custom shape dish?

Q8CamaRo

iTrader: (4)

Diamonds -8.6cc and eagle 6.125 H beams rods
nice combo

Turbo LS1 SS

iTrader: (7)

custome rod length, custom dish (-22), custon top ring down, custom bore

SSilverSSurfer

iTrader: (8)

looks like diamonds are the way to go

MiaSSmaro98

iTrader: (9)

diamond is what i will use

Z06PSI

iTrader: (33)

Custom Diamond and Callies rods.

M3 Muscle

Any clue what HP and RPM rating Callies rods have?

nvmy2000ss

iTrader: (17)

Diamond and Lunati pro billets here.

TurboGoat

is there an off the shelf Diamond for a 346 with 317 heads that I can use? looking for 8.5 to 9:1

mightyquickz28

iTrader: (8)

I emailed Diamond themselves today, asking for a part number for my application and goals and they emailed it right back within 45 minutes. Here's his email addy..."Eric Simone [esimone@diamondracing.net]"
I sent him all this so he'd know what to recommend...
============================================
How’s it going?

I have a ’96 Chevy Z28 with an 383 LT1. I’m converting to a T76 Turbo and all the guys at LS1Tech.com are recommending your forged turbo/blower pistons. Here’s the info on my application.

Motor Type: stock cast iron LT1 block

Bore: 4.030

Stroke: 3.75

Rod Length: 5.7” (H-Beam, Forged and bushed for full floating piston, capable of supporting 1,000 Hp)

Heads: Stock Aluminum LT1 castings, heavily ported by a pro w/54 to 58cc combustion chambers

Head gaskets: Nominal compressed height of .049

Anticipated Horsepower: 600 Rear Wheel

Fuel: Premium Pump gas for the street, race gas at the track

Anticipated Usage: 80% street, 20% strip

Desired Static compression Ratio: 8.5:1



Do you have a Diamond Piston part number I can refer to when I talk to a Diamond Distributor?

Thanks!

David K. Wilson

’94 Z28 383 A4 3.42

’96 Z28 383 M6 4.10

========================================
He replied :
My part number #11426 gives the compression you want, but is for a 6" rod - not a 5.7 rod.

31cc dish - and it's designed for blowers/nitrous use.

$750.83 per set including pins - rings are extra.

Thanks for the e-mail..!!

Eric

30thTA0525

iTrader: (2)

check with victory racing engines... they can get you that exact same set up for $600 and some change.. im buying the exact same set..