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12v Mods Dyno Results

   
Old 02-26-2008, 08:26 PM
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12v Mods Dyno Results
Been working on a local 12v latley which is a 97 12v auto and before we did some pump tweaking, (100 Plate,Gov Shim,AFC Mods 16* timing). At that time it layed down 280hp & about 670tq uncorrected since then we've added (4k gsk, Mack rack Plug, 60lb springs & 18.5* timing) and tonite it put down 348hp & 804tq and the humidity was around 85* so I think we'll try it on a better day to hopfully see a lil more out of it. So it picked up about 68hp and 134tq with those mod changes. Just thought some of you guys would be intrested in these results, and that was with a stock charger and sticks. And the trucks baseline was 170hp and about as much torque as a Civic

Brett
Attached Thumbnails 12v Mods Dyno Results-101_4535.jpg   12v Mods Dyno Results-101_4534.jpg   12v Mods Dyno Results-101_4533.jpg  
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Old 02-26-2008, 08:29 PM
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very nice.
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Old 02-26-2008, 08:32 PM
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Originally Posted by dzlfarmboy
Been working on a local 12v latley which is a 97 12v auto and before we did some pump tweaking, (100 Plate,Gov Shim,AFC Mods 16* timing). At that time it layed down 285hp & about 680tq uncorrected since then we've added (4k gsk, Mack Plug, 60lb springs & 18.5* timing) and tonite it put down 348hp & 804tq and the humidity was around 85* so I think we'll try it on a better day to hopfully see a lil more out of it. So it picked up about 63hp and 124tq with those mod changes. Just thought some of you guys would be intrested in these results, and that was with a stock charger and sticks. And the trucks baseline was 170hp and about as much torque as a Civic

Brett

what is a "mack plug" i've never heared of it

jason
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Old 02-26-2008, 08:33 PM
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Good numbers Brett!
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Old 02-27-2008, 07:12 AM
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Originally Posted by 65fury
what is a "mack plug" i've never heared of it

jason
I check back in the computer and the first mod run was 280hp & 670tq to be exact, I was just going off what he said he made.

And it's a Mack Rack Plug, or where you just being sarcastic?

Thanks John

Brett
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Old 02-27-2008, 07:21 AM
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awesome. how is your project coming along brett?
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Old 02-27-2008, 07:24 AM
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Originally Posted by haloman
awesome. how is your project coming along brett?
Good Im going to yank my motor this week, as I need the rear bell housing off my 24v to mock up my twins, and I should have everthing to build them by this week.
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Old 02-27-2008, 08:37 PM
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Originally Posted by dzlfarmboy
I check back in the computer and the first mod run was 280hp & 670tq to be exact, I was just going off what he said he made.

And it's a Mack Rack Plug, or where you just being sarcastic?

Thanks John

Brett
haha no im actually serious, i really aint never heared of it, if it gives me more power then i want to do it too

jason
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Old 02-27-2008, 10:29 PM
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It is the final stop in the pump's rack travel. Putting in a Mack Plug lets you get even more travel out of the pump for more fueling. Just make sure your AFC is modded and your plate is ground deep and you will pick up some ponies...
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Old 02-28-2008, 07:39 AM
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Originally Posted by 65fury
haha no im actually serious, i really aint never heared of it, if it gives me more power then i want to do it too

jason
Yeah it will give more travel for added fuel, if your AFC is modified to allow it to. Here's a pic of one it goes in between the front of the pump and the timing cover, look at it from up top you'll see it. Let me know if you want one.

Brett
Attached Thumbnails 12v Mods Dyno Results-174-7444_img%5B1%5D.jpg  
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Old 02-29-2008, 01:51 PM
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Mack Rack Plug Location
Here is a pic of one installed for some that are wondering where this plug goes.
Attached Thumbnails 12v Mods Dyno Results-mack-plug.jpg  
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Old 03-09-2008, 03:40 PM
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Droped in some marine 370's and spun the rollers to find a net of about 75hp with the 370 injectors.
Attached Thumbnails 12v Mods Dyno Results-101_4577.jpg   12v Mods Dyno Results-101_4578.jpg  
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Old 03-09-2008, 04:34 PM
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what kinda heat came off those 370's?
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Old 03-09-2008, 04:53 PM
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ya Id like to know what the egts are too Im debating this as well.Is this with the stock dv's ?Also what tranny mods are done?Just a simple tc and vb or what?Thanks
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Old 03-09-2008, 04:56 PM
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nice info. I like to see results like that when you install parts and then show what it does on the dyno
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