Thread: 402R vs 402SR
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Old 01-15-2008, 06:24 AM
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efrost efrost is offline
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Join Date: Nov 2006
Location: Metairie, LA
Cobra Make, Engine: Superformance 2013, Roush 392
Posts: 49
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Quote:
Originally Posted by Got the Bug
The test tag that came on my 402SR shows 486 HP and 490 Torque.

http://www.clubcobra.com/photopost/d...F_2613_011.jpg

The 402SR has a nice idle and will run at 2K rpm all day long in 5th gear without bucking. Plenty of get up and go.
Got the Bug,

What heads did your Roush come with? The 2004 vintage Roush 392AL that’s in my car has Dart 195's. The peak engine dyno numbers are 447hp@5600 and 484tq@4100. I have toyed with the idea of changing these heads to a more exhaust friendly head (AFR’s) but with the expense of the heads plus new headers the installed price seems to outweigh the gains. Assuming a 70 hp/?tq gain the upgrade would be in the $35/hp range.

Btw, my engine looks identical to yours…. Alternator configuration, polished option and valve covers. Roush puts together a very nice package.

Thanks in advance,

Ed
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