34 Guests, 0 Users

Author Topic: How much Cam  (Read 1958 times)

0 Members and 1 Guest are viewing this topic.

Offline STREETREBEL

  • Pinto Full Member
  • ***
  • Posts: 106
  • FeedBack: +1/-0
  • Gender: Male
  • Another Pinto Driver

  • Total Badges: 4
    Badges: (View All)
    Topic Starter Poll Voter Fifth year Anniversary Windows User
How much Cam
« on: October 08, 2012, 10:56:50 AM »
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?
 

Offline racer99

  • Pinto Full Member
  • ***
  • Posts: 182
  • FeedBack: +4/-0
  • Gender: Male
  • Just damn junk with a bt carb

  • Total Badges: 6
    Badges: (View All)
    Fifth year Anniversary Topic Starter Poll Voter Apple User Mobile User Windows User
Re: How much Cam
« Reply #1 on: October 08, 2012, 02:49:26 PM »
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.

Offline STREETREBEL

  • Pinto Full Member
  • ***
  • Posts: 106
  • FeedBack: +1/-0
  • Gender: Male
  • Another Pinto Driver

  • Total Badges: 4
    Badges: (View All)
    Topic Starter Poll Voter Fifth year Anniversary Windows User
Re: How much Cam
« Reply #2 on: October 08, 2012, 04:16:39 PM »
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.

Offline D.R.Ball

  • Pinto Sr. Member
  • ****
  • Posts: 558
  • FeedBack: +36/-2
  • Gender: Male

  • Total Badges: 5
    Badges: (View All)
    Topic Starter Tenth year Anniversary Poll Voter Windows User Fifth year Anniversary
Re: How much Cam
« Reply #3 on: October 08, 2012, 09:32:26 PM »
Check with Crane or Summitt they have people who can answer that question in real time over the phone...

Offline racer99

  • Pinto Full Member
  • ***
  • Posts: 182
  • FeedBack: +4/-0
  • Gender: Male
  • Just damn junk with a bt carb

  • Total Badges: 6
    Badges: (View All)
    Fifth year Anniversary Topic Starter Poll Voter Apple User Mobile User Windows User
Re: How much Cam
« Reply #4 on: October 09, 2012, 04:31:11 PM »
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.

Offline STREETREBEL

  • Pinto Full Member
  • ***
  • Posts: 106
  • FeedBack: +1/-0
  • Gender: Male
  • Another Pinto Driver

  • Total Badges: 4
    Badges: (View All)
    Topic Starter Poll Voter Fifth year Anniversary Windows User
Re: How much Cam
« Reply #5 on: October 10, 2012, 05:03:15 PM »
Thank you.