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LS3 & L92 Info

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Old 06-03-2006, 12:37 AM   #61
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Quote:
Originally Posted by Robin L
I have been trying to get good information on the L92 Heads. We have been playing with them a bit and will share that information when we have good data.

GMPP will sell the heads complete fully assembled for about $700.00 a pair.

The good news is that they plan to offer an intake kit also. The intake will come with injectors, fuel rails and a 90 MM throttle body. The target price for the kit is $475.00.

The L92 heads and intake kit will be a very cost effective performace upgrade for the LS engines. Look for the heads to be availble 3rd quarter.

I will advise more on the intake kit when I get a release date.

Robin
drve by wire ?
or cable throttle?
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Old 06-03-2006, 01:38 PM   #62
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im guessing its the ls2/7 tb
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Old 06-03-2006, 02:04 PM   #63
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The L92 heads and intake kit will be a very cost effective performace upgrade for the LS engines. Look for the heads to be availble 3rd quarter.


An upgrade to LS engines? Maybe I missed something, but don't you need a 4.00" bore to use these heads? Seems the LS1/LS6 guys with the smaller bores are out of luck. Please correct me if I am wrong.
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Old 06-03-2006, 02:07 PM   #64
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Quote:
Originally Posted by bowtieman81
The L92 heads and intake kit will be a very cost effective performace upgrade for the LS engines. Look for the heads to be availble 3rd quarter.


An upgrade to LS engines? Maybe I missed something, but don't you need a 4.00" bore to use these heads? Seems the LS1/LS6 guys with the smaller bores are out of luck. Please correct me if I am wrong.
Yeah you need atleast the 4" bore, they are setup for a 4.060 chamber and use 2.12 intake valves.
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Old 06-03-2006, 02:17 PM   #65
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Thanks xfactor...for second I got excited about a L92 top end on my car

Guess I will have to ante up for an LS2/L92 block when this stuff becomes available.
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Old 06-03-2006, 02:18 PM   #66
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Quote:
Originally Posted by bowtieman81
Thanks xfactor...for second I got excited about a L92 top end on my car

Guess I will have to ante up for an LS2/L92 block when this stuff becomes available.
Just know that because I am awaiting a set as we speak. Eager to get started on the custom intake.

Brandon
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Old 06-03-2006, 02:26 PM   #67
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How is GM getting 10.5:1 compression with a 68cc combustion chamber? Are they running really thin head gaskets? I am assuming the pistons are flat tops, anybody seen one?
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Old 06-03-2006, 06:45 PM   #68
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Quote:
Originally Posted by bowtieman81
How is GM getting 10.5:1 compression with a 68cc combustion chamber? Are they running really thin head gaskets? I am assuming the pistons are flat tops, anybody seen one?
Well its a 4.060 bore, with 68cc and about a .050 gasket you are right around 10.5-10.6:1 with a flat top.

Brandon
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Old 06-04-2006, 10:29 AM   #69
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Quote:
Originally Posted by xfactor_pitbulls
Yeah you need atleast the 4" bore, they are setup for a 4.060 chamber and use 2.12 intake valves.

I thought they used 2.16 intake valves?
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Old 06-04-2006, 11:10 AM   #70
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Quote:
Originally Posted by Haans249
I thought they used 2.16 intake valves?
Correct:
2.160" intake valve
1.590" exhaust valve

Richard
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Old 06-04-2006, 02:45 PM   #71
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Quote:
Originally Posted by Richard@WCCH
Correct:
2.160" intake valve
1.590" exhaust valve

Richard
Have you gotten anything in the works as far as cnc or porting for these budget heads? It seems like these will be a VERY popular option, especially with the pricing. I'm putting together a 446ci Darton Sleeved LS2 super stroker with the L92 heads/sheetmetal intake and would love to see 360+cfm out of these heads. This is all being put together thanks to MizFit Motorsports! I think you've talked to Taylor about this, but I'm just wondering if you have thought about it anymore....my heads are at his shop now

Thanks!
Adrian
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Old 06-04-2006, 03:19 PM   #72
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Nobody said how good the valve springs were in the package.
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Old 06-04-2006, 04:06 PM   #73
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Probably stock
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Old 06-04-2006, 07:20 PM   #74
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A 4.06 bore x 3.622 stroke equals 375 CI not 378 CI.

The first post say's 378 CI. Either that or the Bore of 4.06 is wrong?

Just thought I'd mention that.

Does anyone know which one it is?
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Old 06-04-2006, 07:36 PM   #75
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I believe it's a 4.065 bore could be wrong but I remember somebody saying that.
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Old 06-04-2006, 08:13 PM   #76
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Quote:
Originally Posted by Haans249
I thought they used 2.16 intake valves?
My fault, just shot from the hip. Either way, its more valve than you need for that bore size.
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Old 06-04-2006, 08:47 PM   #77
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Quote:
Originally Posted by firefighter
I believe it's a 4.065 bore could be wrong but I remember somebody saying that.

That still only makes it 376 cubic inches?

Something is wrong with GM's data.
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Old 06-04-2006, 09:12 PM   #78
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Quote:
Originally Posted by Haans249
Have you gotten anything in the works as far as cnc or porting for these budget heads? It seems like these will be a VERY popular option, especially with the pricing. I'm putting together a 446ci Darton Sleeved LS2 super stroker with the L92 heads/sheetmetal intake and would love to see 360+cfm out of these heads. This is all being put together thanks to MizFit Motorsports! I think you've talked to Taylor about this, but I'm just wondering if you have thought about it anymore....my heads are at his shop now

Thanks!
Adrian
I'm supposed to have a couple of sample heads on the way. I'll start working on a program as quickly as I can.

Richard
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Old 06-05-2006, 06:44 AM   #79
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Quote:
Originally Posted by dhdenney
How good are the valve springs?
They are production springs.

Robin
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Old 06-05-2006, 09:17 AM   #80
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Quote:
Originally Posted by Robin L
They are production springs.

Robin
Right, that's a no brainer but what are they rated to?
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