06-26-2014, 02:44 PM
|
|
CC Member
|
|
|
Join Date: Feb 2012
Location: Keller,
TX
Cobra Make, Engine: Lonestar Classics LS427. Self-built 408W, AFR 195 heads, Performer RPM Intake, Quick Fuel 750, 407rwhp, 479rwtq
Posts: 549
|
|
Not Ranked
Vacuum secondary spring question
I'm tuning the secondaries on my Holley 670. Right now I can feel when the secondaries open. It doesn't bog or hesitate, it just pulls harder. The Holley instructions state to use a lighter spring until you feel it open, then go back one. Since these cars are so light, and since I don't have a bog, do I need to go to a stiffer spring? Or just leave it in place? Some day I can try to record 15-60mph times and compare, but just wondering.
|