I've been reading everything I can find online about tuning these driven pulleys. I've read that using a stiffer (yellow) spring will hold the driven pulley closed longer and keep the rpms up, but I can't find anyone stating how high of rpms can be gained by doing this. I've already tightened my stock spring to the tightest hole.
I recently finished my ending build which consist of predator 212 hemi with:
+0.020 rod (put me at almost zero deck)
Arc billet flywheel
26mm chinkuni
Arch mini bike header
Stainless valves 27mm & 25mm
Ported head (not shaved yet)
22lb valve springs
Billet valve retainer kit
Stock head gasket
CM grind cam
My goal is to tune my driven pulley to allow me to reach around 6000 rpm and hold around there all the way through overdrive.
Right now it will get up to around 4200 rpm initially and then begin to shift to over drive too quick and pushing my rpms down to around 3900 rpm. Its steadily picking up speed rapidly, but I know it would do better if I could keep the rpms up in the powerband throughout the shift.
Does anyone have any experience tuning these for higher rpm?
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I recently finished my ending build which consist of predator 212 hemi with:
+0.020 rod (put me at almost zero deck)
Arc billet flywheel
26mm chinkuni
Arch mini bike header
Stainless valves 27mm & 25mm
Ported head (not shaved yet)
22lb valve springs
Billet valve retainer kit
Stock head gasket
CM grind cam
My goal is to tune my driven pulley to allow me to reach around 6000 rpm and hold around there all the way through overdrive.
Right now it will get up to around 4200 rpm initially and then begin to shift to over drive too quick and pushing my rpms down to around 3900 rpm. Its steadily picking up speed rapidly, but I know it would do better if I could keep the rpms up in the powerband throughout the shift.
Does anyone have any experience tuning these for higher rpm?
Sent from my SM-G930V using Tapatalk