Now what? ls6 intake? Heads?
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From: EXTON, PA
Now what? ls6 intake? Heads? Just did a cam swap on a 05 silverado with the LS 327 motor in it. Just wondering what i should do next any input would be great looking to get the most performance out of it that i can before i have to drop a new motor in.
Heads and intake kind of go hand in hand. Great flowing heads are going to be hamstringed by a poor flowing intake (especially in the upper RPM range), while a great intake and poor flowing heads is not optimal either.
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From: EXTON, PA
also have a k&n cold air intake, Corsa dual exhaust, pacesetter long tube headers, 4.10 rear end, NGK plugs, Efi live and that's pretty much it so far.. I am doing 90/10 shocks in the front soon. Not really I don't drive it as a daily or tow with it. Just looking to get the most power out of the block I have now
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I have the stock truck intake manifold on it currently I heard the ls6 intakes flow better would you leave the intake manifold or upgrade to the ls6 manifold
I've heard that it's a wash between the truck and LS6 intake. I'd have to do more research, but as of right now, I don't think it would be worth spending the money on a LS6 intake when you've already got the truck intake. The money would be better spent on a FAST in my opinion.
Here is what I found via a quick search:
https://ls1tech.com/forums/generatio...s6-intake.html
https://ls1tech.com/forums/conversio...t-intakes.html
http://forums.corvetteforum.com/c5-t...s6-intake.html (This one is pretty interesting)
Here is what I found via a quick search:
https://ls1tech.com/forums/generatio...s6-intake.html
https://ls1tech.com/forums/conversio...t-intakes.html
http://forums.corvetteforum.com/c5-t...s6-intake.html (This one is pretty interesting)
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FAST LSXT is the best FAST intake you can get. Tony Mamo posted on here he thought it was 25HP better than an LS6... before porting. It's maybe one of the few FAST intakes that could actually be worth the power increase if that's true.
I would look at getting the 5.3L heads ported by TEA or AI. That would be the cheapest route and would give you another 40rwhp or so for about $1k.
So for $2k (FAST + ported heads), you'd be looking at a 60+rwhp bump. Not too bad.
I would look at getting the 5.3L heads ported by TEA or AI. That would be the cheapest route and would give you another 40rwhp or so for about $1k.
So for $2k (FAST + ported heads), you'd be looking at a 60+rwhp bump. Not too bad.
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From: EXTON, PA
FAST LSXT is the best FAST intake you can get. Tony Mamo posted on here he thought it was 25HP better than an LS6... before porting. It's maybe one of the few FAST intakes that could actually be worth the power increase if that's true.
I would look at getting the 5.3L heads ported by TEA or AI. That would be the cheapest route and would give you another 40rwhp or so for about $1k.
So for $2k (FAST + ported heads), you'd be looking at a 60+rwhp bump. Not too bad.
I would look at getting the 5.3L heads ported by TEA or AI. That would be the cheapest route and would give you another 40rwhp or so for about $1k.
So for $2k (FAST + ported heads), you'd be looking at a 60+rwhp bump. Not too bad.
Thread Starter
Registered User
Joined: Jun 2014
Posts: 10
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From: EXTON, PA
FAST LSXT is the best FAST intake you can get. Tony Mamo posted on here he thought it was 25HP better than an LS6... before porting. It's maybe one of the few FAST intakes that could actually be worth the power increase if that's true.
I would look at getting the 5.3L heads ported by TEA or AI. That would be the cheapest route and would give you another 40rwhp or so for about $1k.
So for $2k (FAST + ported heads), you'd be looking at a 60+rwhp bump. Not too bad.
I would look at getting the 5.3L heads ported by TEA or AI. That would be the cheapest route and would give you another 40rwhp or so for about $1k.
So for $2k (FAST + ported heads), you'd be looking at a 60+rwhp bump. Not too bad.
Get some FIC resized ones... the Bosch spray pattern is best for our heads and their resizing program is like 299 and you can get whatever size you want.
Also, I'd do a 3200 stall at a minumum or even a 3600... Yank has the SS3200 for trucks which would wake it up and the SS3600, which would be ideal for maximizing performance. The difference between a 3200 or 3600 is pretty small in how they feel, if based on a tight performing series like the SS from Yank.
Circle D can also set you up with something in that range... 2C or 3C.
Also, I'd do a 3200 stall at a minumum or even a 3600... Yank has the SS3200 for trucks which would wake it up and the SS3600, which would be ideal for maximizing performance. The difference between a 3200 or 3600 is pretty small in how they feel, if based on a tight performing series like the SS from Yank.
Circle D can also set you up with something in that range... 2C or 3C.
Thread Starter
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Joined: Jun 2014
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From: EXTON, PA
I've heard that it's a wash between the truck and LS6 intake. I'd have to do more research, but as of right now, I don't think it would be worth spending the money on a LS6 intake when you've already got the truck intake. The money would be better spent on a FAST in my opinion.
Here is what I found via a quick search:
https://ls1tech.com/forums/generatio...s6-intake.html
https://ls1tech.com/forums/conversio...t-intakes.html
http://forums.corvetteforum.com/c5-t...s6-intake.html (This one is pretty interesting)
Here is what I found via a quick search:
https://ls1tech.com/forums/generatio...s6-intake.html
https://ls1tech.com/forums/conversio...t-intakes.html
http://forums.corvetteforum.com/c5-t...s6-intake.html (This one is pretty interesting)
The last article was the most interesting one, and to me, was the best "tell-tail" in regards to real world data. Like the thread says, one can be had for about $100 from any local junk yard as opposed to $400+ for a used LS6 and a kings ransom for a FAST intake. Take the article for what it's worth.
Staging Lane
Joined: Mar 2014
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To be honest with you, your horsepower efforts should be much more detailed. A 5.3 block has potential, but with stock bottom end w/compression don't expect too much gain. 60 rwhp is even pushing it. With injectors its pretty much a horsepower expectation. You buy them according to cfm of air and rpm expectancy. And of course horsepower. Head to cam matching is ideal. You don't just get better flowing heads with out the cam or the ci's that match. If you want more info just shoot me a pm and I can help you out further.