LS6 Vs. BBK (dont bring up heat soak)
05-23-2014, 11:06 AM
#1
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LS6 Vs. BBK (dont bring up heat soak) Alright guys so I have a Ls6 on my car now.
I just sold it and bought a bbk for less money for a few reasons.
When I do heads, id like to port match my heads and intake and i know that BBK is easier to port since the bottom comes off and has more meat on the bone. I also already have a 80mm BBK throttlebody
I have two questions though, In terms of flow, will the bbk outflow the ls6 right out of the box?
and also will I have issues with the intake sealing if I mill my heads when I decided to do them? obviously the composite intakes have the ability to stretch a little.
I think the BBK looks better than the ls6 and I wanted to do something different. not spending any money doing it was a plus as well
What do you guys think?
please dont mention heat soak cause its BS!
I just sold it and bought a bbk for less money for a few reasons.
When I do heads, id like to port match my heads and intake and i know that BBK is easier to port since the bottom comes off and has more meat on the bone. I also already have a 80mm BBK throttlebody
I have two questions though, In terms of flow, will the bbk outflow the ls6 right out of the box?
and also will I have issues with the intake sealing if I mill my heads when I decided to do them? obviously the composite intakes have the ability to stretch a little.
I think the BBK looks better than the ls6 and I wanted to do something different. not spending any money doing it was a plus as well
What do you guys think?
please dont mention heat soak cause its BS!
05-23-2014, 04:23 PM
#2
It will flow better than a LS6 right out of the box, but you probably won't feel the difference with just running the 80mm tb, I'd run it with the 85mm tb. FYI, the BBK intake is already very smooth inside so unless you're really good at porting I'd limit the porting to port matching the runners with the heads. I'd go a head and use new port seals for a better seal, other than that you should be fine with intake to head sealing.
I'd also put blue Loctite on all the bolts on the bottom of the intake so none of the will come loose. Take your time installing it since it will be awkward because of the added weight.
I'd also put blue Loctite on all the bolts on the bottom of the intake so none of the will come loose. Take your time installing it since it will be awkward because of the added weight.
05-24-2014, 01:33 PM
#4
Okay, my bad! 
So bbk doesn't make a 3 bolt DBW 85mm TB for the LS1.
Probably the only thing I'd touch is thick ridge along the top half (front) of the inlet, other than that I'd probably leave it alone.
IMO, the BBK SSI is also a good intake for running Nitrous.
So bbk doesn't make a 3 bolt DBW 85mm TB for the LS1.
Probably the only thing I'd touch is thick ridge along the top half (front) of the inlet, other than that I'd probably leave it alone.
IMO, the BBK SSI is also a good intake for running Nitrous.
Last edited by 99Bluz28; 05-24-2014 at 01:41 PM.
05-24-2014, 05:46 PM
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I have all the bolts and everything for the BBK. do you know if my stock coolant crossover lines above the valley cover will work?
On the ls6 I knocked off the braces that run along the bottom of the manifold so it would clear the lines
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05-27-2014, 02:44 AM
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What you guys think is heat soak, is just a metal intake retaining heat longer than a poly intake.
The incoming air doesn't spend enough time in the intake manifold to heat up enough to affect the performance of the engine.
Did you guys forget that the heads are aluminum, and get much hotter than the intake? If anything, the air would get hotter going through the heads.
05-27-2014, 09:37 AM
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What you guys think is heat soak, is just a metal intake retaining heat longer than a poly intake.
The incoming air doesn't spend enough time in the intake manifold to heat up enough to affect the performance of the engine.
Did you guys forget that the heads are aluminum, and get much hotter than the intake? If anything, the air would get hotter going through the heads.
The incoming air doesn't spend enough time in the intake manifold to heat up enough to affect the performance of the engine.
Did you guys forget that the heads are aluminum, and get much hotter than the intake? If anything, the air would get hotter going through the heads.
Its not like that plastic manifold doesnt get hot too.. Yes I agree that the metal intake would retain the heat and it would take longer to dissipate.
Im spraying so basically any heat soak issue is totally negated anyway.
05-27-2014, 11:11 AM
#14
When I had my bbk it worked fine with the stock coolant cross over, it is noticeable heavier then the ls6 and fast but it was a great intake I would still have it if I didn't upgrade to the fast
05-27-2014, 12:27 PM
#15
What you guys think is heat soak, is just a metal intake retaining heat longer than a poly intake.
The incoming air doesn't spend enough time in the intake manifold to heat up enough to affect the performance of the engine.
Did you guys forget that the heads are aluminum, and get much hotter than the intake? If anything, the air would get hotter going through the heads.
The incoming air doesn't spend enough time in the intake manifold to heat up enough to affect the performance of the engine.
Did you guys forget that the heads are aluminum, and get much hotter than the intake? If anything, the air would get hotter going through the heads.
05-27-2014, 01:35 PM
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thats good to know, I have all the button bolts and everything, the coolant lines were concerning though. It should be good for my nitrous I would think
05-27-2014, 02:58 PM
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Glad to hear!
So far my findings have been that everyone that actually has it, loves it and doesnt have anything negative to say about it besides the 10 pound difference in weight.
everyone that doesnt have it, just talks about heat soak..
I agree that a fast is better but im not about to go guy a new throttlebody and nitrous plate for minimal gains
So far my findings have been that everyone that actually has it, loves it and doesnt have anything negative to say about it besides the 10 pound difference in weight.
everyone that doesnt have it, just talks about heat soak..
I agree that a fast is better but im not about to go guy a new throttlebody and nitrous plate for minimal gains
05-27-2014, 03:35 PM
#20
Here is my theory on heat soak. Metal/Aluminum is a conductor of heat, and is going to get hot faster, and stay much hotter than plastic, which is not a conductor of heat. Does the plastic get hot, yeah, but you can run your car for hours, pop the hood and not burn yourself by touching the plastic intake. Try doing that with a metal/aluminum intake. If the metal/aluminum sustains a higher temperature, the it's going to remain hot, unlike the plastic intake, which sustains a much lower temperature. I think we all can agree that heat is the enemy of horsepower/torque.