PINTO CAR CLUB of AMERICA
Shiny is Good! => Your Pintos/Bobcats & Racers => Topic started by: STREETREBEL on October 08, 2012, 10:56:50 AM
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I have a 1991 "mexican" block 5.0 running engine.
I want to put aluminum heads and a bigger cam in it.
How Big can I go without hitting the pistons?
X cam?
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You need to worry about other things also.
Coil bind,pushrod length,P to V clearance,
idle vacuum(if pb),adding a vacuum resv.
rocker arm pattern on valve tips,blah,blah,blah.
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I will order springs with the cam kit.
I will measure pushrod length when I install the new heads.
Don't need vacuum for anything.
I wanted to know how much lift I can use with the stock stroke and pistons.
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Check with Crane or Summitt they have people who can answer that question in real time over the phone...
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Installing the cam advanced,straight up, or retarded will
also change P to V clearances.
Intake valve diameter is also part of the equasion.
1.94 will clear where a 2.02,2.05,2.08 wont.
We have used .530 lift with stock diameter intakes
but it wouldnt clear with a 2.02 unless we advanced the cam
to get the int valve to chase the piston down the bore.
I would use .500-.510 for a standard but thats depends how much clearance
you feel safe with.
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Thank you.