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Buzzman72 
AMC Addicted 
Joined: Sep/15/2009 Location: Southern IN Status: Offline Points: 2725 |
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 Posted: Sep/16/2017 at 12:43pm |
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A few minutes with a calculator tells me that 400 lb/ft of torque at 4000 rpm with a 304 requires a torque ratio of 1.31, and a BMEP of around 198. Not impossible with a naturally aspirated engine, but it IS a pretty dern tall order.
That's territory few amateur engine builders tread on. |
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Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
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304-dude
AMC Addicted
Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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Posted: Sep/16/2017 at 1:08pm |
I would try setting it up for 300hp at 5000RPM, and do 100HP NOS. You'll get 400HP at 5000RPM and be happy with street driving. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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Buzzman72 wrote: