#1  
Old 10-09-2017, 11:35 AM
Steve C. Steve C. is offline
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Join Date: Dec 1999
Location: Liberty Hill, Tx. (Austin)
Posts: 10,929
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For interest post the manufacture and specs of the cam in question. If a comp Cam list the lobe numbers ( in the grind # ) this way we can look up the duration at .200 lift and the rated duration.

Also it my not necessarily apply but with spring selection in conjunction with a 1.900" IH watch the distance from coil bind at net valve lift, too far of a distance is not a good thing ! I presume the .600" is net lift after valve lash.

.

__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/

Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE

Last edited by Steve C.; 10-09-2017 at 11:41 AM.
  #2  
Old 10-09-2017, 11:51 AM
Steve C. Steve C. is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Liberty Hill, Tx. (Austin)
Posts: 10,929
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Below from input here:
http://www.wallaceracing.com/camcalc.php

Intake Duration is 260.00 degrees.
Exhaust Duration is 268.00 degrees.
Installed Intake Centerline is 108.00 degrees ATDC.
Installed Exhaust Centerline is 116.00 degrees BTDC.
LSA is 112.0 degrees
Overlap is 40.00 degrees.


.

__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/

Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE
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