We're Making Horsepower! Exhaustive LS Intake Manifold Test

Intake manifolds are a great tool to help influence where in the power-band an engine makes its power. We spent two days on the dyno with our friends at Prestige Motorsports (www.prestigemoto.com) testing multiple LS intake manifold combinations to see how each helped develop horsepower.

[@jdmmike7225]

Wanna see you do a video on that new 4 cylinder that uses a LS head. Would love to see a turbocharged version in an IMSA Monza tribute build.

[@CamaroCade98]

My 5th gen Camaro SS with the Holley Lo-Ram on my SBE LS3 with CNC ported heads and GPI SS4 NFC cam loves the high rpm’s. With a 6L80E, it’s shifting at 7200rpms and the motor wanted to keep going in the higher rpms.

[@prestigemotorsports]

Another GREAT Video Jeff! Thanks so much for supporting our team here at Prestige with these very detailed videos.

[@EdwardAlcala]

Love these videos. Especially when I get home from work got something to watch lol

[@joshdrobny93]

Thanks for the great content!

[@TheHorsepowerMonster]

Glad you enjoyed it. Thanks for watching!

[@trdscfjc]

The stock LS3 intake is very hard to beat -Richard Holdener

[@jimboyokel]

Would have been good to compare it to factory LS3 manifold too.

[@Funtimes670]

I agree, the factory LS3 is the best intake for the money. Would have been nice to see a baseline with it.

[@teddyjones8027]

Fantastic video, Thank you very much for sharing and putting out such excellent and informative content it's very much appreciated. Everyone keep yourselves and love ones safe and healthy and remember to SMILE. HAPPY HOLIDAYS

[@TheHorsepowerMonster]

Thanks for watching!

[@vrm86gt]

thanks for the testing these!

[@lesterstehn4802]

Great content mate, been following you for a long time now and you've got a great mix of topics👌 Be interesting to see that mid rise dual plane with some contouring into the lower plenum. I'm tipping it would pick up the top end. Then with a pair of 650's or 750's for the old school crew🙂 Great work👍

[@karenashcraft8812]

i love this content keep up the good work

[@rubenramirez8062]

Love these engine test videos keep it up man!

[@TheHorsepowerMonster]

Thanks, will do!

[@frfrpr]

Learned some interesting facts. Thanks

[@Lagrange1186]

I know it wouldn’t be an apples to apples comparison but I wish you guys had tested that mid rise with carbs to see the difference charge cooling can make on the bottom end. Great test I think I’d go with the ultra low for the money and the fit under a stock hood. Thanks for sharing the great info.

[@reubenmosman9466]

Love it, can't wait for the next

[@TheHorsepowerMonster]

Thanks!

[@paullutherborrow637]

Great episode Would have been good to see a set of twin 4 holes throttle bodies ontop too

[@scottsigmon926]

Very good video. Do a test on lids next. Everyone seems to be making lids for these intakes.

[@johnsmith-qz4bv]

great video ...

[@TheHorsepowerMonster]

Thanks!

[@mattphilip8288]

Yes

[@prashanthkrishanduth8521]

Nice follow up video with Prestige. Last time the Fast LSXR with 102mm TB was better than the high ram. Would still like to see the Edelbrock Cross-Ram LS3.

[@michaelblacktree]

I would like to see a test of the cross-ram intake, as well.

[@bcbloc02]

The edelbrock cross ram was the best for torque and average horsepower across the pull when Richard Holdener did his last manifold test.

[@johnw3996]

CAN;T WAIT FOR TO START WORKING ON YOUR // VET, // PS VERY GOOD JOB SO FAR 😎😎😎😎

[@TheHorsepowerMonster]

Hey, thanks a lot! Trying to make time to work on the Corvette while also shooting engine build videos has been a little bit tougher than I thought -- but it's coming along. Thanks for watching!

[@jeremeypope2212]

I’d love to see a test a test of different tops vs the factory lid

[@andreasmessner7357]

Great video!! Do you think you could do a 410 sprint car engine build sometime?

[@Sir.VicsMasher]

Wish Holley made a low profile intercooled intake manifold, similar to the LSA/ LS9.

[@mickmic1]

Have you ever considered using FreeValve technology replacing the cam?

[@km6832]

Ultra low for high rpm NA Hi ram for average power Mid ram for compromise

[@GoatPilot04]

What was the red tray in the intake valley?

[@harperjmichael]

Missed two other common options, BTR and Edelbrock.

[@timaustin110]

Add boost to all of them 😁😁😁

[@Hitman-ds1ei]

Need to change title to "Holley intake test "

[@JMAGG]

How do you seal your intake manifolds on a BBC. I'm having issues where the runners are sucking up a little bit of oil. Do you put gasket maker on both sides of the gasket? If so what gasket maker do you use? I'm also getting small amounts of anti freeze that seeps out of the bolt holes past the bolts that are on the sides of the water jackets. What do you use to seal those threads? Thank you for your time and help.

[@TheHorsepowerMonster]

You can try a thin coat of Permatex Ultra Gray silicone on both sides of the intake gasket, and then for any bolts, just use liquid thread sealer. You can get the stuff in any autoparts store. Good luck!

[@JMAGG]

@@TheHorsepowerMonster thank you! I'm just trying to decide about gray or black now. It seems you like the gray better

[@lukelikens2057]

I wonder if a throttle body that sprays fuel into the intake versus the injectors would that change your horsepower numbers too

[@taylorsrus9543]

Small increase in power due to increased air cooling. Look up any carb vs EFI test.

[@samstewart4807]

It is toooo bad you did not test a stock 2006 ZR1 corvette 427 c.i. 600 hp intake

[@shadowopsairman1583]

Longer runners are more torque. Shorter for higher rpms

[@seanbragg1696]

Dang was hoping youd use the spacer on the high ram

[@TheHorsepowerMonster]

That would have been a fun test. The thing about engines that's both great and infuriating is there are so many potential combos with all the different parts available that it becomes practically impossible to have any absolutes. For example, I think where the plenum spacer could really be a benefit is on extreme stroke engines. That extra piston speed per revolution of the crankshaft could probably benefit from extra volume in the plenum to feed the individual cylinders without having to pull more air through the throttle body. But am I going to build a complete engine just to find out? Nope! Thanks for watching

[@seanbragg1696]

@@TheHorsepowerMonster do a unbuilt engine with ultra low ram and spacer and high ram with spacer would be the test with a 103mm Msd air force throttle body so we know the advantage of strokers really are then if you feel there's real advantage in the money base run it or just talk no walk

[@paintballpartutd]

That 1" spacer works best when its got spray bars installed in it! Just saying

[@TheHorsepowerMonster]

Ha! Great idea!

[@samstewart4807]

@9.16 Maybe you mean you are detonating the engine?? Because you dont want to spend the time required to set up the fuel and ignition curves to stop that???

[@tomp538]

Buying aftermarket parts always comes with the risk, that the product in question is really only designed to sell. Don't ask me how I know.😎