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Old 10-22-2021, 11:22 AM   #15
FlowTie
 
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Yea looking at the LT5 is does have PI, I stand corrected. Porting will have a much more pronounced result on the PI LT5 due to the increased boundary layer within the blower, but this boundary layer also effectively limits volume which is why we see little gains porting our stock LT4 with DI blowers. Also why the AFR didn't fly off the handle with the LT5 I'm assuming.
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Old 10-22-2021, 11:30 AM   #16
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I hope so.

I like Matt but he does put some information out there that isn't correct. He states in his video that you can't order a SS/LT1 with a manual trans right now and that simply isn't the case. There is no constraint on the 6 speed manual at this time. It's not listed on my weekly DOSP constraint list or the national constraints report.
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Old 10-22-2021, 11:40 AM   #17
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Originally Posted by GearheadSS View Post
I hope so.

I like Matt but he does put some information out there that isn't correct. He states in his video that you can't order a SS/LT1 with a manual trans right now and that simply isn't the case. There is no constraint on the 6 speed manual at this time. It's not listed on my weekly DOSP constraint list or the national constraints report.
I'm not sure how much trust I'd put in one of the sites he referenced, either...
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Old 10-22-2021, 11:42 AM   #18
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His videos are mostly clickbait. I wouldn’t bet on this ever happening for numerous reasons.
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Old 10-22-2021, 11:42 AM   #19
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Quote:
Originally Posted by FlowTie View Post
Yea looking at the LT5 is does have PI, I stand corrected. Porting will have a much more pronounced result on the PI LT5 due to the increased boundary layer within the blower, but this boundary layer also effectively limits volume which is why we see little gains porting our stock LT4 with DI blowers. Also why the AFR didn't fly off the handle with the LT5 I'm assuming.
Wut? The CT5-V has a revised LT4 supercharger and is DI only. LMP picked up 60whp swapping the newer LT4 supercharger for the older unit found on ZL1/Z06 ported by Kong. The LT4 supercharger picks up a lot from porting.
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Old 10-22-2021, 11:44 AM   #20
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Quote:
Originally Posted by FlowTie View Post
Yea looking at the LT5 is does have PI, I stand corrected. Porting will have a much more pronounced result on the PI LT5 due to the increased boundary layer within the blower, but this boundary layer also effectively limits volume which is why we see little gains porting our stock LT4 with DI blowers. Also why the AFR didn't fly off the handle with the LT5 I'm assuming.
Lol
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Old 10-22-2021, 11:49 AM   #21
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Quote:
Originally Posted by KingLT1 View Post
Wut? The CT5-V has a revised LT4 supercharger and is DI only. LMP picked up 60whp swapping the newer LT4 supercharger for the older unit found on ZL1/Z06 ported by Kong. Nothing LT5 was used anywhere.
That's what I was thinking. And Alec's ZL1 put down something like 1000-WHP on Kong's port if I recall recently. That combination seems to be on the ragged edge, but the OP's suggestion there are little gains to be had from the 1740 don't seem to be founded in much research, IMO. RPM has gotten past 900, too, for that matter. There are going to be more, too, as these are released into the wild.
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Old 10-22-2021, 12:25 PM   #22
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There's a good bit of power to be made in porting the stock LT4 blower. The only real downside to the stock blower as we all know is the intercooler bricks. The heat is manageable though with improved heat exchangers if you're only making a pass and letting the car cool down which most people will anyway. Making back to back runs is where it will start to show its weakness. Of course those that are looking for 900whp+ are probably better off going with a 2650R.
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Old 10-22-2021, 01:44 PM   #23
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I've seen with my own eyes a ported stock blower LT4 do nothing on a otherwise stock Camaro, I mean nothing. First mod the guy did, no change from baseline. I dunno if it was Kong, but he definitely wasted his money.
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Old 10-22-2021, 01:55 PM   #24
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Originally Posted by FlowTie View Post
I've seen with my own eyes a ported stock blower LT4 do nothing on a otherwise stock Camaro, I mean nothing. First mod the guy did, no change from baseline. I dunno if it was Kong, but he definitely wasted his money.
Can't speak for anyone else but Kong and Jokerz have both shown very good power increases porting the stock LT4 blower. Maybe that guy should have used one of the well known porting shops where the results are proven over and over again.
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Old 10-22-2021, 04:56 PM   #25
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Quote:
Originally Posted by FlowTie View Post
I've seen with my own eyes a ported stock blower LT4 do nothing on a otherwise stock Camaro, I mean nothing. First mod the guy did, no change from baseline. I dunno if it was Kong, but he definitely wasted his money.
If you’re interested, watch this when you have some time.

https://m.youtube.com/watch?v=wA5cK9ke4y0
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Old 10-22-2021, 07:24 PM   #26
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Quote:
Originally Posted by Z OH 6 View Post
There's a good bit of power to be made in porting the stock LT4 blower. The only real downside to the stock blower as we all know is the intercooler bricks. The heat is manageable though with improved heat exchangers if you're only making a pass and letting the car cool down which most people will anyway. Making back to back runs is where it will start to show its weakness. Of course those that are looking for 900whp+ are probably better off going with a 2650R.
We'll be dynoing mine in the next couple of days and 815 on 100 oct. seems about right. Then we'll see how far E85 can go.
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Old 10-22-2021, 08:26 PM   #27
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Quote:
Originally Posted by FlowTie View Post
I've seen with my own eyes a ported stock blower LT4 do nothing on a otherwise stock Camaro, I mean nothing. First mod the guy did, no change from baseline. I dunno if it was Kong, but he definitely wasted his money.

Are you sure you had your eyes open when you checked?
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Magnuson 2650 90mm upper w/13% lower (9.06)
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Old 10-23-2021, 07:24 AM   #28
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Lol
How are those GESI Gen 2 cats holding up
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