neckcrank

I was wondering if anyone has info on this combo, 6L block with ls6 heads? does this block have bigger bore/stroke potential? do all parts interchange?
thanks!

99 Corvette

The iron block has a 4 inch bore already you might be able to bore it a little more but not much. All the parts interchange to my knowledge :cheers:

Jerry

EuG

Disadvantages:
<LI>Extra 75lb at the nose
<LI>Can’t bore as much (forget what’ the max, but re-sleeved aluminum blocks can go slightly bigger bore)

Advantages:
<LI>Cheaper than aluminum re-sleeved
<LI>I guess it’s stronger for huge Nitrous shots or a lot of boost (however aluminum re-sleeved blocks have held pretty intense Nitrous shots [read 300+] w/o problems, so it’s not clear at what level it really starts to matter)



[Modified by EuG, 7:26 PM 4/23/2002]

neckcrank

ttt

MattG

The 6.0L iron block is a good way to get cheap bore and some added strength, but in my opinion it is not worth the extra 70lbs it weighs.

I believe the maximum bore size is 4.030 you can go with it but when matched with a 4.125 crank, gets you a definite boost in cubes! :D


[Modified by MattG, 7:43 PM 4/24/2002]

Skeeter1

I have this setup bore 4.030 stroke 4.125 in an ironblock, I moved the battery to the back to offset some of the weight gain. carbon fiber high rise hood and spector werks c5r headlights will bring bias back to stock. if you want tech infof call Norriis motersports or Mike at Moore performance.


[Modified by Skeeter1, 7:36 PM 4/24/2002]

intel55

I like because I do not trust the relseeves yet for large FI or nitrous. I just want to see more people use 300 shots or whatever before I do a resleeve. I am getting a 6.0 block bored .030 over and 4" crank for a lil 408 :D

On a interesting note MTI says it can now do a 4.20 bore resleeve on an ls1/6!!!! So put a 4.20 bore and 4.25 crank in there and ... OMG a 471!!!!


opps


[Modified by intel55, 9:07 PM 4/24/2002]

99 Corvette

With all the work/cost of the stuff you did to even out the weight and the custom built 4.125" crank wouldn't it have cost less to just use an aluminum block with a 4.125" bore and the Lunati 4.00" crank? Just curious why you decided on the iron block?

Jerry

Skeeter1

I just went with what my tuner recomended because of frequent n20 use, the focus on weight distrbution is partly a way to justify the hood and lights I want too :lol:

flynbludream

Are the heads on the cast iron block aluminum or are they cast too? Just wondering out loud. :confused:

intel55

I think after '00 they are all aluminum. I know my LQ9 heads are aluminum. I think I also read somewhere that they are going to be suing aluminum blocks now in some truck lines...

neckcrank

Here's why I asked; I recently acquired a fresh set of 2002 ls6 heads and a complete 6 Litre short block. I have no car for it but I'm considering a 9c1 caprice (I still have little kids. It must serve 2 purposes; family and fun). I still need the intake and a complete ignition/computer with sensors. I know its not a vette but I appreciate the input! Thanks!

EuG

neckcrank,
It will work no problem (everything bolts up to iron block just the same AFAIK), but I’m not sure it’s worth the afford for you :nonod:

Just get a SBC. :yesnod: You’ll make similar power, but it should drop right into your vehicle and all accessories should just bolt up. The motor itself will be cheaper and the install will be MUCH cheaper and you won’t have to go through the pain of trying to fit everything.

I’m sure you’ll have no problem selling 6.0 block and LS6 heads to somebody here or on ls1.com / ls1tech.com
Just my opinion…



[Modified by EuG, 2:07 PM 4/25/2002]

neckcrank

So what are my parts worth?

KOSW

I'm looking for a 6.0 iron block if anyone wants to sell it. Please let me know.

RunNE1

KOSW,

Are you moving away from the Supra world, or just trying something different???
Here's a link to a 6.0 block... http://www.ls1tech.com/ubb/cgi-bin/u...c;f=7;t=002943

STEALTH C-5

My 6.0L iron block with the added weight has performed very well,it was cheaper than re-sleeving an aluminum block and much stronger,I'll take the strength any day,I'll be spraying the car in the near future and down the road it will see twin-turbos.So far my nitrous built 408 has out performed other bigger cubed re-sleeved aluminum strokers while on motor,naturally aspirated.The 6.0 block weighs 98lbs more than the stock block,I've noticed no difference in handling/cornering when I have my street tires on

KOSW

RunNE1, NO, I'm still involved with the Supras. But I am going to biuld a Vette that can beat any street Supra:) At least that will be my goal:) I'm shooting for 1000Hp with out NOS.
SAAD

Snowman

That should be something to see (1000hp w/o spray).

I had a 6.0L bored out for a 427. You do add somewhere between 70-80 pounds. Better heat transfer. Motor was being built for big nitrous shots but with an MN6 it turned out I could only benefit from about a 150-200 shot. After that...."wheeeeeeeeeee there goes the clutch". So I replaced with Alum block 427, saved the weight and car goes like a sumbitch.

I like skeeter, move the battery to the back, put on skinnies for drag racing, will go to Hal shocks soon, took off front sway bar. ANYTHING to get weight off the front of the car. More critical in C5 than Fbody because weight transfer goes better in an Fbody.

Having had both, I wouldn't go iron block again unless I was planning on doing 250-300shots on a pretty regular basis.

Oh...alum heads and steel block do expand and contract at different rates. Make sure you get gaskets, head bolts, torque specs right if you are thinking of doing this yourself. That would be a critical place the motor would tend to fail if not done properly especially on spray.

Snowman

KOSW

Thanks for the advice. I have been biulding engine for a while and you are correct about getting a proper head gasket. My 3.0 litre Supra motor has made as much as 1100 HP at the flywheel. Making 1000HP from a V-8 should be cake:) You just need all the right parts and that is what I'm trying to gather up right now. So if anyone knows where I can find a 6.0 iron block please let me know. IN the link that was givin to me the engine was already sold:(