Best intake manifold for a turbo LS
07-26-2013, 09:10 PM
#42
i THINK the OP was more worried about air distribution rather than how much power an intake will "support" no? that being said, its also a concern of mine i would hate for the dreaded lean cyl 7. i think the ONLY way to get near perfect distribution is a centrally located intake opening like on the carb style spider intakes. i personally love the stock look or big dollar sheet metal intakes but they both allow for a higher forced pressure (not actual higher pressure but a higher "push" of air in a stright direction making it harder for the airflow to turn downwards into the front most intake valve openings) towards the rear cylinder intake valves which could all lead to a lean cylinder(s). unless you have an aftermarket engine controller where you can tune individual injectors i think the carb style is the best and SAFEST intake to go... ya there may be people out there using different set ups but whos to say they arent running a little lean in the rear cylinders and affecting reliability? i doubt a lot of people are tuning cylinders individually and for those that are they have $$$$
Last edited by C Murda; 07-26-2013 at 09:15 PM.
07-26-2013, 09:25 PM
#43
This would have been better if we had more clues to what the setup consisted of, instead we got what is the "best intake manifold for a turbo LS."
Either way OP bought what fit under his stock hood. Hopefully it matches his setup.
08-02-2013, 08:21 AM
#47
Im also on the side that an ls6 is hard to beat.. The fact that it doesnt heat soak nearly as bad as the aftermarket options is a huge plus imo. Couple buddies have the aarons setup and they made good power, until they started getting heatsoak and the gains werent really worth it in my eyes
08-02-2013, 10:04 AM
#50
No such thing as “the best” intake manifold. They are designed around a specific engine flow and rpm range. Slapping some massive $2000 sheet metal intake on a stock 5.3/turbo is going to make the car perform horribly. Buy the intake suited for your rpm range and engine flow.
IMO there is absolutely no reason for an aftermarket intake in your application. The dollar invested VS the power gained just isn’t there. An ls1 intake and TB would get you 10’s easily. Why not put the money somewhere it will make more of a difference?
Spend that money on a nice fuel management system that allows you to adjust fuel trims to each cylinder. Richen up the "problem cylinders" and go to town!
IMO there is absolutely no reason for an aftermarket intake in your application. The dollar invested VS the power gained just isn’t there. An ls1 intake and TB would get you 10’s easily. Why not put the money somewhere it will make more of a difference?
Spend that money on a nice fuel management system that allows you to adjust fuel trims to each cylinder. Richen up the "problem cylinders" and go to town!
08-02-2013, 12:04 PM
#51
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I plan on running a GMPP(Vic jr style) intake, Accufab 4150 throttle body, and a velocity carb hat. I have a BS3 so if I have an issue with certain cylinders then I have the ability to address that.
08-02-2013, 01:07 PM
#52
The reason a single plane makes more power at a higher rpm is from the shorter intake runner carrying torque further into the rpm range. This makes more peak horsepower.
I really like the Pro flo and Hi Ram intakes. The issues I have with them though with most of the users on this board is the turbo that is being used with them.
Most of the users on this board are using turbo's outfitted with turbine wheels and exhaust housings that will NEVER allow them rev over 7000rpm due to back pressure and the restriction created in the exhaust by the turbine wheel/exhaust housing.
If you have a turbine wheel/housing that allows your engine or will allow your engine to turn 7000rpm or more, then and only then IMO is your engine/combination a good candidate for an intake manifold with a shorter runner that will decrease low end torque for top end horsepower.
The one good thing I will say about the Pro Flo and Hi ram is the runners are not quite as short as the single plane intakes are. This makes more torque at a lower rpm, while still allowing for higher rpm capabilities.
I really like the Pro flo and Hi Ram intakes. The issues I have with them though with most of the users on this board is the turbo that is being used with them.
Most of the users on this board are using turbo's outfitted with turbine wheels and exhaust housings that will NEVER allow them rev over 7000rpm due to back pressure and the restriction created in the exhaust by the turbine wheel/exhaust housing.
If you have a turbine wheel/housing that allows your engine or will allow your engine to turn 7000rpm or more, then and only then IMO is your engine/combination a good candidate for an intake manifold with a shorter runner that will decrease low end torque for top end horsepower.
The one good thing I will say about the Pro Flo and Hi ram is the runners are not quite as short as the single plane intakes are. This makes more torque at a lower rpm, while still allowing for higher rpm capabilities.
08-02-2013, 01:32 PM
#53
I agree with the consensus here. The OP can get by with an LS6 intake all day long for just a little 5.3 setup. No need for a carb style intake. ****, look what Mightymouse did with his intake, then add on look at what stock48 is doing with a stock truck intake. Both of them 8 second cars.
For whoever said a Marcella intake is 2 grand, you might want to double that. The only way you are going to find one for 2k, is used.
I checked Precision Metalcraft years ago and they were the cheapest at $2750.00
Hogan, Marcella, and Beck are all up there with the price.
For whoever said a Marcella intake is 2 grand, you might want to double that. The only way you are going to find one for 2k, is used.
I checked Precision Metalcraft years ago and they were the cheapest at $2750.00
Hogan, Marcella, and Beck are all up there with the price.
Last edited by 87silverbullet; 08-02-2013 at 01:39 PM.
08-05-2013, 02:26 PM
#54
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Mamo ported FAST. Tony spent some time on the bench while he ported.
He didnt' just get in there and eyeball it.
Stock has been proven to 1100fhp or so (Stock48).
Ever notice that the NA guys don't run an elbow much.....
There is one guy who spent some time moving the divider around in an elbow.
I'll look for his site when I get home. It was $400 or so though.
This is what a proflo with a bigger turbine will do for you....
http://www.theturboforums.com/thread...gh-6-0-LS-S480
Note how small the cam is.
He didnt' just get in there and eyeball it.
Stock has been proven to 1100fhp or so (Stock48).
Ever notice that the NA guys don't run an elbow much.....
There is one guy who spent some time moving the divider around in an elbow.
I'll look for his site when I get home. It was $400 or so though.
This is what a proflo with a bigger turbine will do for you....
http://www.theturboforums.com/thread...gh-6-0-LS-S480
Note how small the cam is.
I stood up the radiator but thats about as far as I am willing to go IMO it actually looks cleaner than factory when done right.
08-15-2013, 09:46 PM
#58
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Thanks for opinions guys, I really appreciate all the positive feedback. I went ahead and purchased a victor jr intake with the aarons elbow, I just picked it up from getting powered coated today