Somendar Singh's groove and LS7 engine... - Hot Rod Forum : Hotrodders Bulletin Board
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Old 06-13-2007, 04:02 AM
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Somendar Singh's groove and LS7 engine...

Does his groove improve LS7 engine as well?

or does it only apply to older engines?

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Old 06-13-2007, 06:16 AM
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The LS series heads combustion chambers are far more efficient than the older designs. Hacking up a new set of heads from a $14000 engine seems idiotic to me.
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Old 06-13-2007, 09:44 AM
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Quote:
Originally Posted by RippinRon
The LS series heads combustion chambers are far more efficient than the older designs. Hacking up a new set of heads from a $14000 engine seems idiotic to me.
I could not have put it any better, RippinRon

Vince
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Old 06-13-2007, 10:17 AM
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Hmm, sitting here with my mouth zipped shut!!!! LOL
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Old 06-13-2007, 11:15 AM
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Quote:
Originally Posted by Jmark
Hmm, sitting here with my mouth zipped shut!!!! LOL
If I werenít so foolish, I would do the same!


I havenít had an opportunity to do any work on the LS7 engines; I personally
don't know anyone that has one. Itís an excellent high performance engine
that responds well to modifications so Iím told.

I do plenty of work on the LS1, both production and aftermarket heads. They
respond to porting and the grooves very well.
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Old 06-13-2007, 04:54 PM
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Can I be dumb and ask what this groove is?

Steve
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Old 06-13-2007, 04:59 PM
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Hi Steve. It's new to lots of people. Very interesting concept.

Here is one link from a while back.

and another one.

Mark
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Old 06-13-2007, 05:08 PM
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Thanks Jmark, let the reading begin!

Steve
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Old 06-13-2007, 09:01 PM
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Bumping this post over the deleted double of it.

tom
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Old 06-13-2007, 09:05 PM
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To automotive breath:


So do you think it's possible to improve upon stock LS7 engine using the grooves?
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Old 06-13-2007, 09:58 PM
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Red, what in gods green earth is the current issue you have with the stock LS7 head that I know for a fact will run 12:1 on pump gas from Cleveland to Little Rock Arkensas in 95 degree heat and stop and go traffic AND makes well over 500 SAE corrected flywheel horsepower with about 27 degrees of total timing, with the AC running.

Grooves in this type of cylinder head will do no good. It is a superb head as is. Not a cylinder head you'd want to hack up.

Do yourself a HUGE favor one day and go to a car show and spend some time at the GM Performance Parts trailer and exhubit area. Many times they have their LS cylinder head engineers there. They are a wealth of knowledge and have always been willing to share information.
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Old 06-13-2007, 11:53 PM
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Red, I'm fairly certain the LS7 engine can be improved with the grooves.

Do you have a LS7? If so what are your plans for it?
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Old 06-14-2007, 04:47 AM
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Quote:
Originally Posted by Rick WI
Red, what in gods green earth is the current issue you have with the stock LS7 head that I know for a fact will run 12:1 on pump gas from Cleveland to Little Rock Arkensas in 95 degree heat and stop and go traffic AND makes well over 500 SAE corrected flywheel horsepower with about 27 degrees of total timing, with the AC running.

Grooves in this type of cylinder head will do no good. It is a superb head as is. Not a cylinder head you'd want to hack up.

Do yourself a HUGE favor one day and go to a car show and spend some time at the GM Performance Parts trailer and exhubit area. Many times they have their LS cylinder head engineers there. They are a wealth of knowledge and have always been willing to share information.
Not to mention 28mpg to boot.
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Old 06-14-2007, 11:49 AM
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What's wrong with taking a good head and making it better? I don't know of any head that can't be improved. Cut the thing up and see what you can do.
Bob
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Old 06-14-2007, 11:57 AM
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Where is the data showing grooves in a head make any improvement. Oh never mind, we have been through that discussion 8 friggin thousand times.

I think you are making a huge assumption that a groove is "a good thing"

Mark Steilow had his Camaro on Power Tour. He has an LS7 in it. He shaved the head and it's running 12:1. I know Mark and I know his good friend Jody, who was also driving the car. No issues running pump gas.
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