LS7 VS L76 intake on L92 heads
03-20-2007, 06:54 AM
#1
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LS7 VS L76 intake on L92 heads This is a question for the tech guys and Sponsors. Please do not answer with "I think.." as I don't want conjecture and I'm sure others at this forum don't either. It seems to me the new L76 and the LS7 intakes should both work on the new L92 heads, since these are supposed to be almost the same heads as the LS7 heads. Is this correct? And if so, which intake is superior? It seems the L76 peaks around 6k rpms and the LS7 intake might be better suited to a higher RPM range, maybe even higher (faster) flow.
Have done searches but nothing that compares the two specifically.
Have done searches but nothing that compares the two specifically.
03-20-2007, 07:08 AM
#2
The Ls7 intake will not fit on the L92 heads.
If it did, the LS7 is far superior for car applications.
There is a post with a side by side shot of the two heads, very different, bolt pattern wise. I am sure someone could modify a cast, carb style intake, but there would be no reason to, as a carb style is made for each.
If it did, the LS7 is far superior for car applications.
There is a post with a side by side shot of the two heads, very different, bolt pattern wise. I am sure someone could modify a cast, carb style intake, but there would be no reason to, as a carb style is made for each.
03-20-2007, 09:24 AM
#3
Originally Posted by Stang's Bane
The Ls7 intake will not fit on the L92 heads.
If it did, the LS7 is far superior for car applications.
There is a post with a side by side shot of the two heads, very different, bolt pattern wise.
If it did, the LS7 is far superior for car applications.
There is a post with a side by side shot of the two heads, very different, bolt pattern wise.
03-20-2007, 09:47 AM
#4
Originally Posted by WKMCD
Right answer although it may be possible to severely modify an LS7 intake to fit.
03-20-2007, 10:19 AM
#5
We're looking into the possibility machining a L92 head to fit the LS7 intake in the next few weeks. It's not going to be pretty. There is at least a .125" step at the roof due to the port height difference. Also the O ring seal of the LS7 intake will not cover the L92 port floor. A paper intake gasket may work.
Initial bench testing shows the LS7 intake improving overall runner flow of a ported L92 despite the step at the port roof. And the shorter runner length of the LS7 will make a much better setup for extending the upper rpm power capabilities of the L92 heads. If only GM would make a plastic LS7 style intake that would fit the L92s.............it would be a home run...........
I'll have more on this as soon as I finish the projects at hand.
Richard
Initial bench testing shows the LS7 intake improving overall runner flow of a ported L92 despite the step at the port roof. And the shorter runner length of the LS7 will make a much better setup for extending the upper rpm power capabilities of the L92 heads. If only GM would make a plastic LS7 style intake that would fit the L92s.............it would be a home run...........
I'll have more on this as soon as I finish the projects at hand.
Richard
03-20-2007, 10:51 AM
#6
Originally Posted by Richard@WCCH
We're looking into the possibility machining a L92 head to fit the LS7 intake in the next few weeks. It's not going to be pretty. There is at least a .125" step at the roof due to the port height difference. Also the O ring seal of the LS7 intake will not cover the L92 port floor. A paper intake gasket may work.
Initial bench testing shows the LS7 intake improving overall runner flow of a ported L92 despite the step at the port roof. And the shorter runner length of the LS7 will make a much better setup for extending the upper rpm power capabilities of the L92 heads. If only GM would make a plastic LS7 style intake that would fit the L92s.............it would be a home run...........
I'll have more on this as soon as I finish the projects at hand.
Richard
Initial bench testing shows the LS7 intake improving overall runner flow of a ported L92 despite the step at the port roof. And the shorter runner length of the LS7 will make a much better setup for extending the upper rpm power capabilities of the L92 heads. If only GM would make a plastic LS7 style intake that would fit the L92s.............it would be a home run...........
I'll have more on this as soon as I finish the projects at hand.
Richard
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