C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

roller rockers on a crossfire.

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Old Aug 31, 2013 | 05:51 PM
  #21  
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From: Angier nc
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Originally Posted by jseremba
Yes the engine was stock they did upgrade the valve springs. but nothing else. Pretty cool I thought
Probably more of a gain from valve springs if it had any valve float before.If the heads can move the air at a higher lift then more hp can be had.That usually dictates the engine could use a larger cam.

If it were me I would run a roller tip and go to 1.6 rockers and call it a day.

Last edited by 96 lt-4; Aug 31, 2013 at 07:46 PM. Reason: spelling
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Old Aug 31, 2013 | 06:13 PM
  #22  
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Originally Posted by 96 lt-4
Probably more of a gain from valve springs if it had any valve float before.If the heads can move the air at a higher lift than more hp can be had.That usually dictates the engine could use a larger cam.

If it were me I would run a roller tip and go to 1.6 rockers and call it a day.
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Old Aug 31, 2013 | 10:35 PM
  #23  
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Originally Posted by Tom400CFI
Yep...a 400 hp motor will generally see bigger gains from a given performance part, than an 200 hp motor. I would be quite amazed to see a stock CFI or TPI gain 15 hp from rockers.
That was not the original article. They saw 15 Hp and 17 Lb ft. In any event I will be after I port the manifold replacing the 1.5s with 1.6s
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Old Aug 31, 2013 | 11:12 PM
  #24  
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Copy that! I wish you the best results. When I used 1.6 rockers on my CFI car, they made no discernible difference, both in SOTP and at the drag track. Porting the intake however, made a huge difference. Good luck and most of all...have fun!
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