Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

New GM 6.2L Aluminium?

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Old 11-29-2005, 01:59 PM
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Originally Posted by 427
All the cranks in production were cast when i was there. I did not see any forged cranks in the building.


Kurt
According to GM's own press release, the L92 6.2L motor has a forged crank... did you see the cranks for the L92's?
Old 11-29-2005, 09:43 PM
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The engine I seen had adjustable cam timing and 4.065 boreX3.622 cast crank with square port heads. It appears/rumoured to be going in the Escalade first.
Sounds like they may need to update that release.


Kurt
Originally Posted by vmax1500
According to GM's own press release, the L92 6.2L motor has a forged crank... did you see the cranks for the L92's?
Old 11-30-2005, 03:12 PM
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Recent leaks from Holden in Oz is that this same engine in 6L form is due to make an appearance in all standard V8 models from Jan 1st due to new emissions laws. So maybe GM Oz will be the first.
Old 11-30-2005, 03:32 PM
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Originally Posted by 427
The engine I seen had adjustable cam timing and 4.065 boreX3.622 cast crank with square port heads. It appears/rumoured to be going in the Escalade first.
Sounds like they may need to update that release.


Kurt
Well that kinda sucks. It would have been nice to have a low cost, mass produced forged crank.

Andrew
Old 11-30-2005, 07:38 PM
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It looks to me like if you only bore it .005 to make 4.07 bore (which is reasonable and leaves room for future rebuilds) with a 4.1" crank that should make it 426.7 CI, basically a 427 without the need for overpriced/unreliable sleeves. Stuff it with budget rods and pistons @ 11.5:1, top it off with some LS7 heads/intake and a good size cam, spin it to about 7k and I'm thinking 550+rwhp with great tq curve for about the same price as current 402 setups!

So here is the possible breakdown for a L92 427 CI stroker beast...

L92 block: Approx. $1100ish (if close to LS2 block cost)
Eagle 4.1" crank: $925
Scat rods: $440
Mahle pistons: $580
Rings: $170
Bearings: $150
LS7 heads/Intake from SDPC: $2000 + maybe $800 for valves/assembly?
Cam: $350
Timing covers and timing set etc: $175
Machine shop costs to assemble, balance etc. $1000

Total: $7690!!!

I'm sure I've forgotten something and the total price is probably a little optimistic but you can hardly get a LS1 427 shortblock built for much less then that right now!

Feel free to address any mis-pricing. I was just sitting here brain-storming and pulling #'s off the top of my head.

Last edited by SSblack98; 11-30-2005 at 08:04 PM.
Old 11-30-2005, 07:54 PM
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I was just wondering, does anyone know if the LS1/2/6 style heads will fit on the L92 block?

Therefore being able to make use of some ET heads/Fast intake setup instead of having to worry about the LS7 type heads and intake and making a TB work...
Old 11-30-2005, 08:21 PM
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Originally Posted by SSblack98
I was just wondering, does anyone know if the LS1/2/6 style heads will fit on the L92 block?

Therefore being able to make use of some ET heads/Fast intake setup instead of having to worry about the LS7 type heads and intake and making a TB work...
That would be the **** if you could use a FAST intake with a set of ET heads. This new block seems like it's gonna be the hot ticket. Maybe SDPC will put together a shortblock........hint,hint.
Old 12-01-2005, 06:10 AM
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Hmm, I have an orange '99 Camaro Z28 that keeps getting put off as we always end up using the parts that come in for my car on customer's cars... Bob
Old 12-01-2005, 09:14 AM
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Originally Posted by 02SOMWS6
That would be the **** if you could use a FAST intake with a set of ET heads. This new block seems like it's gonna be the hot ticket. Maybe SDPC will put together a shortblock........hint,hint.
yes, it will fit LS1 style heads, therefore it will fit the FAST intake
Old 12-01-2005, 10:15 AM
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Originally Posted by 383ss
yes, it will fit LS1 style heads, therefore it will fit the FAST intake
Then I am thinking L92 427 w/some ET 11 degree 255 or 265 heads, fast 90/90...super reliable, mid-10 second, N/A, pump gas, street cars for < 8k in motor...
Old 12-01-2005, 04:43 PM
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Originally Posted by 383ss
yes, it will fit LS1 style heads, therefore it will fit the FAST intake
If thats the case I know what my next combo will be. I would start buying parts now but my car only has about 1,500 miles on it. This sounds like my kind of engine.........poor mans 427.
Old 12-01-2005, 06:01 PM
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The LS7 block will accept the same valley cover timing cover and oil pan so why bother with the LS3 if this one was released first. Seems to me that the LS7 block is what everyone would want.
Old 12-01-2005, 08:11 PM
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Would it be worthwile to wait for this block to come out or stick with the iron block? My current project is having LME build me a solid roller 408 with ET C5R heads and a Beck sheetmetal intake that would need to hold up to a 400 shot. Would this aluminum block withstand the abuse?
Old 12-01-2005, 09:31 PM
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Note/Question on valves:

Just because GM used Ti valves on the LS7, doesn't mean they are required. The Boss 302 (I had one in 1971) had 2.21" intakes in '69 and 2.19 in '70. Steel. BBC engines have valves that size and larger...steel.

Wouldn't stainless steel valves work fine? Maybe the Ferrera hollow core?

Next note/question:

Why not cut down the rod jounals to 2.0 or smaller, especially with a 4340 crank? Custom rods for the small journals would be a lot lighter.
Old 12-02-2005, 09:39 AM
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Originally Posted by Spinmonster
The LS7 block will accept the same valley cover timing cover and oil pan so why bother with the LS3 if this one was released first. Seems to me that the LS7 block is what everyone would want.
I wasn't aware that GM was going to release bare LS7 blocks anytime in the near future. If they do that would definitely be the way to go. But if the blocks are released and are too expensive compared to L92 blocks I would buy the L92. You would only get 439 CI w/the LS7 block bored .005 and a 4.1" crank so it would have the be close to the same price to make it worth it IMO.
Old 12-02-2005, 03:11 PM
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For wired among us we could use the LS7 intake and TB hopefully with ported L92 (lS7ish) heads. No more FAST stuff for me.
Old 12-08-2005, 12:14 PM
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great news... more cubes... same $$$ basically.

I didn't see it mentioned or maybe missed it but do these blocks have crossbolted mains like LS1/LS2 motors?

Last edited by gnx7; 12-08-2005 at 12:43 PM.
Old 12-08-2005, 01:08 PM
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Jesus, by the time I'm ready to build a new motor... I'll be able to get 1000 rwhp, and still run pump gas. Gotta love it.
Old 12-08-2005, 02:24 PM
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I would like to see what this L92 would do with cam only.
Old 12-08-2005, 02:27 PM
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I'm guessing enough power to put a full weight car, with good suspension and good tire/gearing into the 10's. 475 rwhp would be my guess at a power #.


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