LS7 Manifold
what I heard is that the parts wont be available till the first Z06 hits the showroom floor
but sdpc has a huge thread on the ls7 crate motor that will proly be the first place that the part number and price will show up at.
but sdpc has a huge thread on the ls7 crate motor that will proly be the first place that the part number and price will show up at. The LS7 intake should hit about the same time as the cylinder heads. To be honest, I doubt we will see them until the first of the year. They will release the production (crate) motor first.
The LS7 intake port is designed for the LS7 head only. Not only is the port different, but the bolt pattern isn't the same. The LS7 heads are on a 11 deg valve angle so custom pistons will be a must.
The LS7 intake port is designed for the LS7 head only. Not only is the port different, but the bolt pattern isn't the same. The LS7 heads are on a 11 deg valve angle so custom pistons will be a must.
Originally Posted by KJ@SDPC
The LS7 intake should hit about the same time as the cylinder heads. To be honest, I doubt we will see them until the first of the year. They will release the production (crate) motor first.
The LS7 intake port is designed for the LS7 head only. Not only is the port different, but the bolt pattern isn't the same. The LS7 heads are on a 11 deg valve angle so custom pistons will be a must.
The LS7 intake port is designed for the LS7 head only. Not only is the port different, but the bolt pattern isn't the same. The LS7 heads are on a 11 deg valve angle so custom pistons will be a must.
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From: clio mi
Originally Posted by Steve1969LS1
The heads wont fit on an LS6/2 or 1 either
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Originally Posted by Steve1969LS1
The heads wont fit on an LS6/2 or 1 either
Originally Posted by KJ@SDPC
The cylinder heads are set up for a big bore. You could make them work with a set of custom pistons, and notch the block for the valves. The realy cool thing to keep in mind is, GM is also going to release the new truck head about the same time. I can't say alot about it yet oher than t will flow close to what an LS7 will and it is built for a smaller bore block (3.910 - 4.060). Both of them will use an off set rocker arm, and the truck head will again have it's own intake. The LS7 manafold will not work from what we can see.
I got my info from GM when I was in Wixom building an LS7..
So whats the scoop steve? the bolt pattern is the same, I see no reason you could not retrofit them to the LS1/2/6 unless there is more than meets the eye such as coolant flow or valvetrain stuff.
Last edited by Louis; Jul 21, 2005 at 08:43 PM.
Originally Posted by Louis
So whats the scoop steve? the bolt pattern is the same, I see no reason you could not retrofit them to the LS1/2/6 unless there is more than meets the eye such as coolant flow or valvetrain stuff.
Besides.. if an LS6 intake makes more power than a LS2 intake then how much better would an LS7 intake be that has the same LS2 runner design?
Also, arnt the LS7 heads taller, I don't know but wouldn't that change the overall design angles on the LS7 intake??
I will as my GM engineer guy this question.
Originally Posted by Louis
So whats the scoop steve? the bolt pattern is the same, I see no reason you could not retrofit them to the LS1/2/6 unless there is more than meets the eye such as coolant flow or valvetrain stuff.
You forget who you are talking to 
The manifold is LS7-LS7 only, too many differences. This we know.
What we dont know is if the heads will bolt to a LS1/2/6 motor. Bolt pattern is the same. The other things, I do not know but I can ask is the water jackets, and valvetrain stuff. I see no reason for them to change it from the C5R stuff since that is where the R&D went on, so im ASSUMING they will bolt right on with the new intake and rockers, provided you know what you are doing with the valve angles and Compression
The manifold is LS7-LS7 only, too many differences. This we know.
What we dont know is if the heads will bolt to a LS1/2/6 motor. Bolt pattern is the same. The other things, I do not know but I can ask is the water jackets, and valvetrain stuff. I see no reason for them to change it from the C5R stuff since that is where the R&D went on, so im ASSUMING they will bolt right on with the new intake and rockers, provided you know what you are doing with the valve angles and Compression
Ls7,ls2,ls6 THE LS7 MANIFOLD IS ONLY MADE TO FIT THE LS7 PORT AND INTAKE BOLT PATTERN.
THE LS7 HEAD HAS A WIDE 1.960 GUIDE SPACING. THAT WOULD REALLY SHROUD THE VALVES ON A SMALL BORE.
THE FIX IS:
WE HAVE MODIFIED THE GUIDE SPACING, VALVE SIZE AND PORT SIZE AFTER THE OPENING TO WORK IN OUR NEW CASTING. IT FITS IN OUR C5R STYLE CASTING. WE HAVE ALSO ADDED A LITTLE DECK THICKNESS TO IT TO BRING THE CHAMBER VOLUME BACK UP TO 72CC. iT AS WELL WILL USE THE OFFSET ROCKER ARM AND FLOW ALMOST IDENTICAL TO THE BIG VALVE LS7. ALSO INCORPORATING THE .750 DECK AND LARGE DIAMETER SRRING PADS WITH THE TALLER VALVE COVER RAIL. SO AS SOON AS THE INTAKE MANIFOLDS ARE RELEASED, IF OURS ISN'T BEFORE THEN ALL YOU GUYS THAT WANT TO MAKE A "LS7" 402 COMBO WILL BE ABLE TO DO JUST THAT. I CAN TELL YOU THAT THE GM PRODUCTION LS7 HEAD IS A LIGHT WEIGHT CASTING AND WILL HAVE ALL THE SAME ISSUES WITH HEAD GASKETS AND OTHER ASSOCIATED PROBLEMS THAT THE OTHER STOCK CASTINGS HAVE.
CARY
ET PERFORMANCE
CARY@ETHEADS.COM
THE LS7 HEAD HAS A WIDE 1.960 GUIDE SPACING. THAT WOULD REALLY SHROUD THE VALVES ON A SMALL BORE.
THE FIX IS:
WE HAVE MODIFIED THE GUIDE SPACING, VALVE SIZE AND PORT SIZE AFTER THE OPENING TO WORK IN OUR NEW CASTING. IT FITS IN OUR C5R STYLE CASTING. WE HAVE ALSO ADDED A LITTLE DECK THICKNESS TO IT TO BRING THE CHAMBER VOLUME BACK UP TO 72CC. iT AS WELL WILL USE THE OFFSET ROCKER ARM AND FLOW ALMOST IDENTICAL TO THE BIG VALVE LS7. ALSO INCORPORATING THE .750 DECK AND LARGE DIAMETER SRRING PADS WITH THE TALLER VALVE COVER RAIL. SO AS SOON AS THE INTAKE MANIFOLDS ARE RELEASED, IF OURS ISN'T BEFORE THEN ALL YOU GUYS THAT WANT TO MAKE A "LS7" 402 COMBO WILL BE ABLE TO DO JUST THAT. I CAN TELL YOU THAT THE GM PRODUCTION LS7 HEAD IS A LIGHT WEIGHT CASTING AND WILL HAVE ALL THE SAME ISSUES WITH HEAD GASKETS AND OTHER ASSOCIATED PROBLEMS THAT THE OTHER STOCK CASTINGS HAVE.
CARY
ET PERFORMANCE
CARY@ETHEADS.COM
