LS3 IM porting
Thread Starter
Drifting
Joined: Mar 2005
Posts: 1,424
Likes: 21
From: Placitas New Mexico
LS3 IM porting
For those of you who have R&Rd your IM...did you replace the cover on the IM? Does this thing hold heat in? Or keep heat out, or quiet things down? If it will hold heat in I'll remove it. Anyone know? I think Jeremy Formato suggests leaving it off. FAST doesn't use one.
thanks!
Tommy O
thanks!
Tommy O
Instructor
Joined: Mar 2011
Posts: 154
Likes: 0
From: Garner NC
You talking about the fuel rail covers (FRC) that say "Corvette" on them? I have no first hand knowledge but in other threads people have said that, yes, they hold heat in.
I saw one post that said your temps would go down 5 degrees or so from removing them.
I saw one post that said your temps would go down 5 degrees or so from removing them.
Burning Brakes
Joined: Apr 2008
Posts: 815
Likes: 0
From: Virginia beach va
I have no idea what it does I did put mine back on but I don't see any harm in leaving it off if it's just there for sound control and I'm sure Joe knows what he is talking about but I do wonder what it really does lol.
Melting Slicks
Joined: Jul 2007
Posts: 2,052
Likes: 14
I didin't want it to run any hotter than it needed to.
Not to mention, all 3 of those items weigh 2-3lbs, every little bit helps-
Melting Slicks
Joined: Jul 2007
Posts: 2,052
Likes: 14
Sure-
Mouth of the intake with pedestals removed
JB WELD for removing pedestals inside
BEFORE
AFTER
I never dynoed it back to back, too much time and money but I could feel the difference around 3K and on-
Very easy but VERY time consuming and if you go too far, you could loose power, better left to the pro's IMHO.
Mouth of the intake with pedestals removed
JB WELD for removing pedestals inside
BEFORE
AFTER
I never dynoed it back to back, too much time and money but I could feel the difference around 3K and on-
Very easy but VERY time consuming and if you go too far, you could loose power, better left to the pro's IMHO.
Last edited by JayplaySS2; Apr 9, 2011 at 11:41 AM.
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Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Sure-
Mouth of the intake with pedestals removed
JB WELD for removing pedestals inside
BEFORE
AFTER
I never dynoed it back to back, too much time and money but I could feel the difference around 3K and on-
Very easy but VERY time consuming and if you go too far, you could loose power, better left to the pro's IMHO.
Mouth of the intake with pedestals removed
JB WELD for removing pedestals inside
BEFORE
AFTER
I never dynoed it back to back, too much time and money but I could feel the difference around 3K and on-
Very easy but VERY time consuming and if you go too far, you could loose power, better left to the pro's IMHO.
If you tuned your ECU and then ported the Throttle Body and Intake manifold,, how much do you think it would effect the tune?
I other words,, would a re-tune be necessary to get the most out of the mod?
Thanks for the pictures. Excellent work! I enjoy porting also. I do my own FAST 90 work now.
Bill
Thread Starter
Drifting
Joined: Mar 2005
Posts: 1,424
Likes: 21
From: Placitas New Mexico
I left it out per Bob at Peak Speed who did the porting.
I will be re-tuning and re-dynoing since adding the stage 2 ported IM and ported TB. I'll post up results probably within a week. Depends on how quick my tuner can get to me.
I will be re-tuning and re-dynoing since adding the stage 2 ported IM and ported TB. I'll post up results probably within a week. Depends on how quick my tuner can get to me.
Melting Slicks
Joined: Jul 2007
Posts: 2,052
Likes: 14
Jay
If you tuned your ECU and then ported the Throttle Body and Intake manifold,, how much do you think it would effect the tune?
I other words,, would a re-tune be necessary to get the most out of the mod?
Thanks for the pictures. Excellent work! I enjoy porting also. I do my own FAST 90 work now.
Bill
If you tuned your ECU and then ported the Throttle Body and Intake manifold,, how much do you think it would effect the tune?
I other words,, would a re-tune be necessary to get the most out of the mod?
Thanks for the pictures. Excellent work! I enjoy porting also. I do my own FAST 90 work now.
Bill
The ported TB doesn't really need adjustment in reality but the ported intake would benefit from a follow up tune. I was changing a cam durring the same time and I knew it, so I just planned on having it all adjusted with the new cam tune.
I wouldn't worry, just wait until you add another item, the get it tuned as a package, IMHO
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Nice job.
I see you used JB Weld to seal the post holes I've used JB Weld so I know it cures hard sticks well to most substrates. But wonder if it can last long term in this environment of heat cycling, vibration, and oil.
Anyone out there that works with plastics and can give some input as to what would be a better product for mending plastic manifolds?
I see you used JB Weld to seal the post holes I've used JB Weld so I know it cures hard sticks well to most substrates. But wonder if it can last long term in this environment of heat cycling, vibration, and oil.
Anyone out there that works with plastics and can give some input as to what would be a better product for mending plastic manifolds?
Thread Starter
Drifting
Joined: Mar 2005
Posts: 1,424
Likes: 21
From: Placitas New Mexico
didn't think of that
Safety Car
Joined: Nov 2007
Posts: 4,537
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From: Bethesda MD