SteelmanLS1

iTrader: (1)

I have a D1SC setting in my garage floor and I'm tired of looking at it just setting there

This is what I got so far on my forged 347 build I am about to start, let me know what I'm missing or where I can improve the build..

This car is a Street/Strip, Mainly street and some strip.. I want to spin this D1SC to its full potential. Not sure on what numbers it will pull but I am thinking 17-18psi.

347 Build + D1SC Procharger:

Clevitte Main/Rod Bearings
ARP 12-Point Head Kit
ARP Main Stud Kit
GM Gasket's
LS7 Lifters
LS6 Intake
TSP Chromeoly Pushrods
Rollmaster Double Timing Chain
Callies Compstars w/ ARP 2000 bolts
TSP Ported LS6 Oil Pump
Custom Blower Cam
Diamond Forged Pistons -2cc (I have NO Idea what -Dish I need!! help!)
PRC 215cc CNC Heads 62cc Chambers
Siemens 60lb Injectors
Aeromotive Fuel Pressure Reg.
Twin Walbro's

Tell me if I missed anything, and Please inform me on what my CR would be.

There used to be a Nice LS1/LS6 CR Chart, I guess it disappeared I wish I had another.

SteelmanLS1

iTrader: (1)

Anyone?

SilverSS

iTrader: (30)

I would either lower the compression with maybe something around an -11cc dished piston or go with some larger chamber heads (317) to get between 9 to 9.5:1 compression. You are ballparking between 10 to 10.5:1 compression with what you have. I don't think pump gas will do very well with the D1SC maxed on that compression. Everything else looks okay to me but im no expert. Just relaying what my past 347 had. Are you upgrading your fuel lines?

SteelmanLS1

iTrader: (1)

That's one thing I wasn't sure about, was actually what pistons I would need to get in the 9:1 - 9.5:1 range.

And I am going to be running a Alky Control Kit (forgot to add that in there)

And I wasn't planning on upgrading fuel lines since for the power I will be making I didn't think it would be a necessity

venom ws7

iTrader: (13)

Sounds like a great setup but If your planning to run full potential you must lower the compression
Did you buy the heads already?? If not get some 70-72cc that will lower it to 9:5 depends on the head gaskets.
AFR, PRC, ETP, TFS.

EPP Made over 700rwhp on mustang dyno with a setup close to that with M6 and 15-16psi.

Also check thire Blower cam its a proven power cam with porcharger.

GOOD LUCK.

SteelmanLS1

iTrader: (1)

Well I want it in the 9.5:1 range for sure... I was told that these TSP heads http://www.texas-speed.com/shop/item...d=993&catid=20 are about the best thing out for a Stock cubed engine(does anyone have any experience with these heads?).. and even though they have small 62cc chambers, it doesn't matter right because I am picking my own pistons not using the stock ones.

I haven't bought any engine parts yet. Just trying to get a Solid build sheet first

stevied916

iTrader: (30)

If you want those heads that's fine but you need a bigger dish than -2cc. My friends mustang heads are around 56-7cc and he is running a -22cc dish.

SteelmanLS1

iTrader: (1)

Yeah I am realizing that now... But I cant find a good CR calc anywhere to figure out what I need

EPP

iTrader: (22)

A small combustion chamber with a dished piston can make for a thin ring land. I'd go with a larger 72cc chamber so you can have a thicker piston. Bob

venom ws7

iTrader: (13)

Those TSP Are freakin awesome but maybe you should talk to them about they're 6.0 Stg 2.5 72cc heads if the heads still brand new sell them or call TSP they will give you a good deal.

Get -9cc Pistons from Diamond or Mahel with compstar connecting Rods.
EPP blower cam.

You know what just call Bob at EPP Plus and tell him what you want he'll put you on the right way for sure trust me.

ChevyChad

iTrader: (50)

Get a bigger cc head and keep the pistons to the minimal dish. The pistons you have chosen are fine, just change your head selection.

There is a good DCR calculator in the internals section that pianoprodigy made. It also shows SCR on it.

SteelmanLS1

iTrader: (1)

First thing I did a couple days ago was called TSP and talk to MATT about my setup.. He agreed on most things other than my head selection. At the time though I was looking at their PRC 6.0L 2.5 CNC heads. He said since I am picking my own pistons at the moment it would be a waste of money not to get the smaller chamber heads (since they are Worlds better than the 6.0L heads) and a larger dished piston to get my CR where I want it. He said he would completely understand if I was going to run a stock bottom end to get the bigger 72cc head, but since I'm not why not get the better head while I can since I get to choose my piston to match. That's just what he was saying. Or well how he was explaining it to me.

ChevyChad

iTrader: (50)

Then get some AFR 72cc heads. I guarantee they are better than the PRCs

SteelmanLS1

iTrader: (1)

Got a link?

Do you mean the 225cc 72cc AFR's? Ones with 2.080/1.600 valves

ChevyChad

iTrader: (50)

yessr.. datd be da ones

sho-me speed

iTrader: (55)

I would leave it as is. With the methanol and that moderate boost level you will be fine. I am running 11.3:1 on mine with pump gas and methanol.

Here is a link to my dyno and my combination.
https://ls1tech.com/forums/dynamomet...s-831rwhp.html

SteelmanLS1

iTrader: (1)

Arent those chambers and valves Really big for a stock cubed motor?

BoostedWS7

they are big but they work out well. ive had basically the same setup for years

SteelmanLS1

iTrader: (1)

What about this guys.

EPP Blower Cam
AFR 225cc 72cc chambers
Diamond Forged -2cc valve pistons 3.905 Bore
MLS LSX 4.13 Head Gasket, .051 thickness

Should put me at like 9.34:1 CR or run a .045 thick gasket and do 9.47:1 CR

Oh and, The piston deck clearance would be, 0 right?

ChevyChad

iTrader: (50)

Sounds like you are more on the right track now The deck clearance stock is +.006 iirc. My piston out of the hole on my current 370 build is +.0045. You will just have to measure it to know for sure, but it doesnt make a huge impact on compression.