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They’ve been in development for a while but the new Summit Max Efi Ls intakes are out! The taller profile ones have longer runners and more plenum volume (9.7L) than typical sheet metal Ls intakes. Mid and short profile, Rectangle and Cathedral, Black or polished, 92 or 102mm Tb versions. Better mixture distribution and performed well in our testing. $499 (with fuel rails) introductory price too!
if you go into the photos, check out the 360 view and you can see the runners and bells extending up into the plenum rather than cut-off at the surface. The plenum material is thicker than what’s commonly used so good for boost!
I see they advertise 8000 RPM. What are your thoughts on this intake for a 416, 242/258 cam, FED Stage 2 LS3 heads shooting for 7000-7500 RPM? Currently looking at the FAST HR or Holley Hi ram
What is the height of the low profile cathedral port version vs a cathedral port FAST 102?
Any dyno results?
Check out the measurements for the low-profile manifold over on this thread. We don't have dyno results yet. We do plan on getting these new manifolds in for some dyno testing. Time will tell and we'll be sure to post the results here on LS1Tech when we do.
Originally Posted by LSleeper1500
I see they advertise 8000 RPM. What are your thoughts on this intake for a 416, 242/258 cam, FED Stage 2 LS3 heads shooting for 7000-7500 RPM? Currently looking at the FAST HR or Holley Hi ram
Yes, the Low-Profile manifolds have a 4,000-8,000 RPM operating range. The tall profile intakes have a 4,500-8,500 RPM operating range. Either are available in a Satin or Black finish. See the thread linked above for measurements on both profiles. If you have the room for the tall profile intake that's what we'd go with for a healthy engine like yours.
Check out the measurements for the low-profile manifold over on this thread. We don't have dyno results yet. We do plan on getting these new manifolds in for some dyno testing. Time will tell and we'll be sure to post the results here on LS1Tech when we do.
Yes, the Low-Profile manifolds have a 4,000-8,000 RPM operating range. The tall profile intakes have a 4,500-8,500 RPM operating range. Either are available in a Satin or Black finish. See the thread linked above for measurements on both profiles. If you have the room for the tall profile intake that's what we'd go with for a healthy engine like yours.
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New Summit Max Efi intakes. 
