Not suggesting it would apply here but I'm aware of a SD Performance build in 2010 that used the Crane 99893 springs on a set of his KRE D-ports that were the 300-305 CNC version.
They were set up at 1.780-1.790 on the intake and 1.810-1.815 on the exhaust.
As a reminder, don't trust the pressure stated in catalogs at the different published installed heights.
Test them at your actual varified installed height with their retainers in use on a calibrated spring checker.
.
__________________
'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
|