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'96 252 454 Magnum performance benchmark
Re: '96 252 454 Magnum performance benchmark
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2008 272 , 496 HO fo SHO
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- akorcovelos
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'96 252 454 Magnum performance benchmark
I wish it were that easy!
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
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'96 252 454 Magnum performance benchmark
That's awesome. I use that in my boat currently and gain 5mph and 100 hp. It's incredible.
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
- Big Block Power
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'96 252 454 Magnum performance benchmark
Looks to be the same plug. That is the same iac motor GM used. I think it's off the 4.3 engine. I think if you ebay search it it comes up under ac47 iac valve. It's been awhile since I bought it. I have a few spares laying around and they are no where near that price.akorcovelos wrote: Fri Sep 13, 2019 9:40 pmThis is the diag plug I have:Big Block Power wrote: Fri Sep 13, 2019 8:23 pm Mine is at.. 31v iac counts 120 not running at key on. I had a hard time finding the correct tps trading when I was looking they freaky don't post it. But I'm with Matt where mine is too.. 50
I'm not sure if my diag cable would work on your connector. As mine and Matt's were the same. So we are hooked up.
Take a picture of yours. I'm sure I could send you mine too try with the software. But the session isn't going to be around much longer and you can do it next year too.
If I’m pulling the throttle body I’ll just replace the IAC. I need to verify by engine serial but I think this is the right one:
https://leadersrpmshop.com/mercruiser-n ... v9EALw_wcB
I’ll take it apart Sunday and see how it all looks. We got 5” of rain in 2 days so the lakes are all no wake, and probably will be for a few days so it’s good timing I guess...
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
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Re: '96 252 454 Magnum performance benchmark
Butt Dyno isn’t that accurate sitting in the garage.Big Block Power wrote: Sat Sep 14, 2019 7:22 amThat's awesome. I use that in my boat currently and gain 5mph and 100 hp. It's incredible.
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
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Re: '96 252 454 Magnum performance benchmark
Sweet, I saw some that looked the same in the pics for like $39, but they didn’t specify the 454.Big Block Power wrote: Sat Sep 14, 2019 7:25 amLooks to be the same plug. That is the same iac motor GM used. I think it's off the 4.3 engine. I think if you ebay search it it comes up under ac47 iac valve. It's been awhile since I bought it. I have a few spares laying around and they are no where near that price.akorcovelos wrote: Fri Sep 13, 2019 9:40 pmThis is the diag plug I have:Big Block Power wrote: Fri Sep 13, 2019 8:23 pm Mine is at.. 31v iac counts 120 not running at key on. I had a hard time finding the correct tps trading when I was looking they freaky don't post it. But I'm with Matt where mine is too.. 50
I'm not sure if my diag cable would work on your connector. As mine and Matt's were the same. So we are hooked up.
Take a picture of yours. I'm sure I could send you mine too try with the software. But the session isn't going to be around much longer and you can do it next year too.
If I’m pulling the throttle body I’ll just replace the IAC. I need to verify by engine serial but I think this is the right one:
https://leadersrpmshop.com/mercruiser-n ... v9EALw_wcB
I’ll take it apart Sunday and see how it all looks. We got 5” of rain in 2 days so the lakes are all no wake, and probably will be for a few days so it’s good timing I guess...
If cleaning the TB and replacing the IAC doesn’t fix the problem maybe I can borrow your cable in the spring, are you running Diacom with it?
My season may be over with the flooding and forecast for the next few days...
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- Big Block Power
- Fleet Admiral

- Posts: 17930
- Joined: Sat May 07, 2016 8:05 pm
- Location: Neenah,Wi
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Re: '96 252 454 Magnum performance benchmark
No I'll send the disc. But I had issues even getting it to work. But your it guy so I'm sure you can make it work better than me. Plus I'll send you another link that worked right away.
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
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Re: '96 252 454 Magnum performance benchmark
Awesome, thanks BB, I’ll probably take you up on that in the spring either way just to see overall health of the engine and get a good baseline for future diagnostics.Big Block Power wrote: Sat Sep 14, 2019 1:01 pm No I'll send the disc. But I had issues even getting it to work. But your it guy so I'm sure you can make it work better than me. Plus I'll send you another link that worked right away.
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- Big Block Power
- Fleet Admiral

- Posts: 17930
- Joined: Sat May 07, 2016 8:05 pm
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Re: '96 252 454 Magnum performance benchmark
Yea or if you drive up to see a real football game stop on by. Lolakorcovelos wrote: Sat Sep 14, 2019 3:32 pmAwesome, thanks BB, I’ll probably take you up on that in the spring either way just to see overall health of the engine and get a good baseline for future diagnostics.Big Block Power wrote: Sat Sep 14, 2019 1:01 pm No I'll send the disc. But I had issues even getting it to work. But your it guy so I'm sure you can make it work better than me. Plus I'll send you another link that worked right away.
Let me know if your around this off season.
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
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Re: '96 252 454 Magnum performance benchmark
I’m still watching baseball bud, but I’ll be up in Appleton some time in February, and I’m in Milwaukee 5 days a week if you ever get tired of the banjo music up north.Big Block Power wrote: Sat Sep 14, 2019 6:50 pmYea or if you drive up to see a real football game stop on by. Lolakorcovelos wrote: Sat Sep 14, 2019 3:32 pmAwesome, thanks BB, I’ll probably take you up on that in the spring either way just to see overall health of the engine and get a good baseline for future diagnostics.Big Block Power wrote: Sat Sep 14, 2019 1:01 pm No I'll send the disc. But I had issues even getting it to work. But your it guy so I'm sure you can make it work better than me. Plus I'll send you another link that worked right away.
Let me know if your around this off season.
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- Big Block Power
- Fleet Admiral

- Posts: 17930
- Joined: Sat May 07, 2016 8:05 pm
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Re: '96 252 454 Magnum performance benchmark
I'll be in Milwaukee Oct. 15th by the airport for work.akorcovelos wrote: Sun Sep 15, 2019 12:33 amI’m still watching baseball bud, but I’ll be up in Appleton some time in February, and I’m in Milwaukee 5 days a week if you ever get tired of the banjo music up north.Big Block Power wrote: Sat Sep 14, 2019 6:50 pmYea or if you drive up to see a real football game stop on by. Lolakorcovelos wrote: Sat Sep 14, 2019 3:32 pm
Awesome, thanks BB, I’ll probably take you up on that in the spring either way just to see overall health of the engine and get a good baseline for future diagnostics.
Let me know if your around this off season.![]()
Yes keep cheering for the Brewers
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
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Re: '96 252 454 Magnum performance benchmark
Sweet, we should do lunch. I’ll stick with the Cubs, I like baseball in October.Big Block Power wrote: Sun Sep 15, 2019 7:26 amI'll be in Milwaukee Oct. 15th by the airport for work.akorcovelos wrote: Sun Sep 15, 2019 12:33 amI’m still watching baseball bud, but I’ll be up in Appleton some time in February, and I’m in Milwaukee 5 days a week if you ever get tired of the banjo music up north.Big Block Power wrote: Sat Sep 14, 2019 6:50 pm
Yea or if you drive up to see a real football game stop on by. Lol
Let me know if your around this off season.![]()
Yes keep cheering for the Brewers![]()
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- Big Block Power
- Fleet Admiral

- Posts: 17930
- Joined: Sat May 07, 2016 8:05 pm
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Re: '96 252 454 Magnum performance benchmark
Since win? Is going to be a few more years for you.akorcovelos wrote: Sun Sep 15, 2019 10:20 amSweet, we should do lunch. I’ll stick with the Cubs, I like baseball in October.Big Block Power wrote: Sun Sep 15, 2019 7:26 amI'll be in Milwaukee Oct. 15th by the airport for work.akorcovelos wrote: Sun Sep 15, 2019 12:33 am
I’m still watching baseball bud, but I’ll be up in Appleton some time in February, and I’m in Milwaukee 5 days a week if you ever get tired of the banjo music up north.![]()
Yes keep cheering for the Brewers![]()
![]()
They have lunch at 5th he meeting plus I'll have another coworker with me. If you swing by you can grab it.
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
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Re: '96 252 454 Magnum performance benchmark
Where’s Nauti, gonna need a translation on this one.Big Block Power wrote: Sun Sep 15, 2019 10:33 amSince win? Is going to be a few more years for you.akorcovelos wrote: Sun Sep 15, 2019 10:20 amSweet, we should do lunch. I’ll stick with the Cubs, I like baseball in October.Big Block Power wrote: Sun Sep 15, 2019 7:26 am
I'll be in Milwaukee Oct. 15th by the airport for work.
Yes keep cheering for the Brewers![]()
![]()
They have lunch at 5th he meeting plus I'll have another coworker with me. If you swing by you can grab it.
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- Big Block Power
- Fleet Admiral

- Posts: 17930
- Joined: Sat May 07, 2016 8:05 pm
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Re: '96 252 454 Magnum performance benchmark
Really I got all of that. Anyways can't do lunch. But you can swing by at lunch time. Lolakorcovelos wrote: Sun Sep 15, 2019 10:36 amWhere’s Nauti, gonna need a translation on this one.Big Block Power wrote: Sun Sep 15, 2019 10:33 amSince win? Is going to be a few more years for you.akorcovelos wrote: Sun Sep 15, 2019 10:20 am
Sweet, we should do lunch. I’ll stick with the Cubs, I like baseball in October.![]()
They have lunch at 5th he meeting plus I'll have another coworker with me. If you swing by you can grab it.![]()
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
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