Thanks for the input guys. It looks like I will be trying to get my hands on a (cheap)used LS1 shortblock. I'll get that disassembled and get a basic rebuild done then start the build up. Keep the advice coming, I'll keep reading through all these old posts and try to teach myself something too. For now, here's the answers I am looking for.

1. What should my goal for compression be? What pistons should I run to achieve this with ported, unmilled 6.0l heads?

2. I know I need to run ARP rod bolts. What about aftermarket rods? Eagle? Others?

3. Are there any other weak links I need to replace while the motor is being built or are the pistons and rod bolts it?

4. Is an LS2 chain tough enough or should I look into a double roller?

5. Will a ported LS6 oil pump be enough or is there another type of oiling system I need to look in to?

6. Is everyone in consensus that 60# injectors and a Walbro 255 will be enough for my fuel system or should I look into aftermarket fueling systems similar to the Aeromotive Universal EFI fueling system offered by Thunder?

7. My stock PCM will be fine for now? I will have it tuned by a professional so I imagine I do NOT need BS3-or should I begin to learn to tune myself?

Any other tips throw them my way, I'm trying to learn as I go. I appreciate it guys!

 

word on that. i've heard of some bad *** stuff about to come out around here.

what part of owasso you live in SVT? never thought i'd see anyone else on here from this place.

 

1. What should my goal for compression be? What pistons should I run to achieve this with ported, unmilled 6.0l heads? 9.0/1 to 9.5/1 for a centrifical supercharger, 8.5/1 to 9.0/1 for a turbo.
2. I know I need to run ARP rod bolts. What about aftermarket rods? Eagle? Others? I'd go with Callies compstar rods.
3. Are there any other weak links I need to replace while the motor is being built or are the pistons and rod bolts it? I'd add Diamond pistons and Total Seal rings with a chrome top ring, thats it.
4. Is an LS2 chain tough enough or should I look into a double roller? SLP timing chain, oil pump combo works very well.
5. Will a ported LS6 oil pump be enough or is there another type of oiling system I need to look in to? Good enough. SLP timing chain, oil pump combo works very well.
6. Is everyone in consensus that 60# injectors and a Walbro 255 will be enough for my fuel system or should I look into aftermarket fueling systems similar to the Aeromotive Universal EFI fueling system offered by Thunder? 60# injectors, and a larger fuel line and twin pumps will be needed for 700 rwhp. I'd use the stock fuel line for the return line, add a regulator and larger fuel rails.
7. My stock PCM will be fine for now? I will have it tuned by a professional so I imagine I do NOT need BS3-or should I begin to learn to tune myself?
Stock pcm is all you need. Get a professional chassis dyno tune.

Any other tips throw them my way, I'm trying to learn as I go. I appreciate it guys!

http://www.exoticperformanceplus.com...php?service=66 This may give you some suggestions. Bob

 

Bob you're a great help! I'll shoot you a PM if my searches on here lead me to a D1SC setup over a turbo setup.

 

Alright, here's my updated parts list now.

Used LS1 shortblock with a full rebuild
Forged Diamond pistons w/ total seal rings w/ a chrome topped ring (see question #2 below)
Callies compstar rods w/ rod bolts (see question #3 below)
SLP timing chain and oil pump
Lucas 60# injectors w/ 2 Walbro 255 pumps w/ a FPR and larger fuel rail (see question #4 below)
Ported LQ9 6.0l heads (see question #5 below)
Patriot dual springs w/ the full spring kit
Hardened pushrods (length depending on base cirlce of cam I select)


Of course when the time comes I will be adding the turbo kit, FMIC and meth. inject kit to the list but I want to get the engine build off the ground first. There are a few more questions I'd like to ask real quick.

I am going to start off the build with my STOCK 98 LS1 camshaft. I do not want to pick out a cam until I know what turbo I will be running because I would like to match the powerbands of the two as close as possible.

#1. Will I be able to get my compression in check w/out knowing my cam selection? I will most likely get dish pistons but how deep should the valve reliefs be? -6cc, -8cc? If it helps, I will be running ported unmilled LQ9 heads and a cam/turbo that kicks in around 3500-3800 rpms.

#2. Does Diamond make the chrome top piston rings? I haven't been able to find them anywhere as of yet.

#3. For the Callie rods, should they be 6.098 or 6.125 in length? Will the ARP rod bolts be good enough as far as rod bolts go?

#4. What size regulator and fuel lines would support 800hp safely?

#5. Are the stock sized valves in the 6.0l LQ9 heads enough or should I go to 2.02/1.57 or even 2.08/1.60 sized valves?

Sorry for all the questions guys, I'm trying to keep it as tech as possible. Searching through here is tough though as many guys do complete one off custom builds that are built to their own specifications/future plans for the car. Thanks again guys

 

Patriot has their CNC'd LQ9 heads on sale right now for $1,095.00 pr + shipping. These heads come assembled and come with their Gold Valvesprings. You might want to check them out, it's a great price!

Total Seal makes the rings. Bob

 

Ya I have been looking at Patriot for a while. I have dealt with Gunnar over the phone and PM's and he's a great guy to do business with. Are stock valves better or 2.02/1.57 or 2.08/1.60 best for a 500++hp turbo application?

 

Good question I have the stg # 3 now with the bigger valves mind you I have a 422 so im not sure if bigger valves are nessary for 346-4++ but only a test will see theroies are good but test are better

 

Bump for some answers on post #25 (3 posts up). Thanks

 

I was doing some more late night browsing and ran into a few more questions.

What lifters should I use? Are OE replacements alright or should I look into Comp R's or even some Morel's? They are a pretty penny and I won't be spinning over 6500 or so.

Should I go ahead and get some ARP main studs while I have the engine apart?

What ignition system are you all using? Is the stock one fine or is there something else I need to look in to?

Do I need to run 2 Walbro 255 fuel pumps or could I run one Aeromotive Eliminator Series In-Line EFI Billet Fuel Pump (good to 1200 EFI hp)?

I know someone reading has information to give out for free!! Feel free to PM me as well as I would love to talk more in depth on all this.`

 

 

Another bumpity