LS7 intake and heads
09-09-2005, 07:55 AM
#22
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Originally Posted by crow@sdpc
Yea I am sure that can be done,but GM will soon have a new head that uses the same port configuration as the LS7 that has a smaller valve for smaller bores.
The New head will use the stock LS1 valve train.Should be available sometime after the first of the new year.
The New head will use the stock LS1 valve train.Should be available sometime after the first of the new year.
09-09-2005, 01:22 PM
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Originally Posted by crow@sdpc
Don't know yet,but word has it about the same and would not suprise me if it were a little higher.I am excited about this New stuff that is coming from the General,it is just not happing quick enough.Info is coming bits at a time.
We will continue too let you guys know everything we know when it happens.
Thanks again to everyone who supports us through this venture.
We will continue too let you guys know everything we know when it happens.
Thanks again to everyone who supports us through this venture.
Do you know what intake they will be using.... i'm assuming the LS7 Intake????
09-09-2005, 02:10 PM
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Does anyone know the limits of the valvetrain components on these heads. I realize it was designed for 505hp but could you just buy these heads and throw 800hp at them? Is the header bolt pattern the same? Would you have to run 1 7/8 primaries? Is the throttle body size and bolt pattern the same as on the LS2? If the ports are taller, does it make the heads taller and if so, does this create any clearance issues with the cowl or fuel rails/injectors?
09-09-2005, 02:24 PM
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From my little research the heads are direct bolt on... everything is the same on all LSx engines for the most part.. however because of the size fo the heads the LS1,2&6 intakes are not compatabile so a new LS7 intake would be required to make it work.
09-09-2005, 04:16 PM
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Originally Posted by crow@sdpc
Yea I am sure that can be done,but GM will soon have a new head that uses the same port configuration as the LS7 that has a smaller valve for smaller bores.
The New head will use the stock LS1 valve train.Should be available sometime after the first of the new year.
The New head will use the stock LS1 valve train.Should be available sometime after the first of the new year.
09-09-2005, 05:06 PM
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Originally Posted by n2ojunkie
OK then I will keep an eye out for them. I wont be buying stuff untill next spring or summer at the earliest anyways but you can never start planing to earliy.
09-09-2005, 06:24 PM
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Originally Posted by 93formto98T/A
Crow, sorry if it just missed the info but do you have a date of when you will have the ls7 heads/intake for sale?
09-10-2005, 01:24 AM
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Originally Posted by crow@sdpc
Yea I am sure that can be done,but GM will soon have a new head that uses the same port configuration as the LS7 that has a smaller valve for smaller bores.
The New head will use the stock LS1 valve train.Should be available sometime after the first of the new year.
The New head will use the stock LS1 valve train.Should be available sometime after the first of the new year.
09-10-2005, 08:52 AM
#31
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Questions on heads/intake:
- Will the special parts (valves and rockers at least) be available to finish the heads/valvetrain?
- Will a FAST or other FAST compatible 90 mm TB bolt up?
- What is the chamber volume on the heads? The LS7 engine pics show a FT piston with deep valve reliefs - must be pretty big chambers to keep CR in range.
With the right answers to these questions, I could order an MTI or other sleeved 427 short block with FT pistons, cut the valve reliefs after getting the heads, bolt everything up, and be back on the road when the weather turns nice in Spring!
- Will the special parts (valves and rockers at least) be available to finish the heads/valvetrain?
- Will a FAST or other FAST compatible 90 mm TB bolt up?
- What is the chamber volume on the heads? The LS7 engine pics show a FT piston with deep valve reliefs - must be pretty big chambers to keep CR in range.
With the right answers to these questions, I could order an MTI or other sleeved 427 short block with FT pistons, cut the valve reliefs after getting the heads, bolt everything up, and be back on the road when the weather turns nice in Spring!
09-10-2005, 09:53 AM
#32
I'd be sure I read the post on the sleeved mti block "going kaboom" before I decided on buying one from them. I'd also like to know about the valve train parts and the comb chamb size. I'm hoping for a 60cc+ cause I'll be running them FI.
09-10-2005, 08:44 PM
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I hate doing this because it's going away from the original post topic but just because one block blew up does mean the entire company's reputation is shot. You don't see them pulling the plug on the space shuttle program anytime soon do you?
09-11-2005, 09:51 PM
#34
Nothing personal to MTI. I'm about to begin a ls1 MID 457 build and with the kind of $ going into this, I'd feel much better with a guy that is doing this day in and day out and is going to be much more in tune with doing this than a guy that does it special order once in a while kind of thing. I'm just saying I would trust non other than steve @ R.E.D. to do this job. JMO TTT for the combustion chamber size on the ls7 heads....
09-12-2005, 09:37 AM
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Originally Posted by 93formto98T/A
Nothing personal to MTI. I'm about to begin a ls1 MID 457 build and with the kind of $ going into this, I'd feel much better with a guy that is doing this day in and day out and is going to be much more in tune with doing this than a guy that does it special order once in a while kind of thing. I'm just saying I would trust non other than steve @ R.E.D. to do this job. JMO TTT for the combustion chamber size on the ls7 heads....
Do you already have access to the 4.200" sleeves or something? How much are you getting the work done and does this include the price of the block?
Last edited by JarrettL; 09-12-2005 at 09:38 AM. Reason: price
09-12-2005, 05:18 PM
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I'm not pretending to have the answers but I think this could be done cheaper f the heads were ordered assembled, minus the intake valves, have Ferrea make 8 2.200" intake valves(might need a group buy to lower price), spend $500 on rocker arms, and you've got LS7 heads ready to bolt on. Can anyone else offer any input on the process of having Ferrea do custom valve grinds?
Crow, any word yet on what the assembled cost of the LS7 heads will be? Maybe even a ballpark? Also, reading GMHTP I saw that the intake is delivered to GM from Bosch as an entire unit with fuel rails, injectors, and throttle body. How do y'all get around having to buy it that way? If it's all one unit shouldn't it have one part number?
Crow, any word yet on what the assembled cost of the LS7 heads will be? Maybe even a ballpark? Also, reading GMHTP I saw that the intake is delivered to GM from Bosch as an entire unit with fuel rails, injectors, and throttle body. How do y'all get around having to buy it that way? If it's all one unit shouldn't it have one part number?
