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Hi guys, some more questions re my 383 build.
I've been reading up on Dynamic CR.
I was looking at the 10.4CR Dished piston kit from Scat with XFI 280 cam but after reading more on DCR wondered if i'm too low on CR.
They also do a 11.8 CR kit with flat top pistons. Doing several calcs with Comp Cams XFI 280 & 292 cams would give me something like the following:
FLAT TOP 5CC 12.257 CR & 280 Cam (69) = 9.44 DCR 196.7 PSI Cranking Pressure
FLAT TOP 5CC 12.257 CR & 292 Cam (75) = 8.92 DCR 182.94 PSI Cranking Pressure
DISHED 16CC 10.86 CR & 280 Cam (69) = 8.39 DCR 169.07 PSI Cranking Pressure
DISHED 16CC 10.86 CR & 292 Cam (75) = 7.94 DCR 157.43 PSI Cranking Pressure
On the KB piston website 9.0-9.5 DCR is doable with this setup.
What do people think with this setup or just go with the Higher CR with the bigger cam anyway??
Thoughts please.
Thanks
Mitch
I've been reading up on Dynamic CR.
I was looking at the 10.4CR Dished piston kit from Scat with XFI 280 cam but after reading more on DCR wondered if i'm too low on CR.
They also do a 11.8 CR kit with flat top pistons. Doing several calcs with Comp Cams XFI 280 & 292 cams would give me something like the following:
FLAT TOP 5CC 12.257 CR & 280 Cam (69) = 9.44 DCR 196.7 PSI Cranking Pressure
FLAT TOP 5CC 12.257 CR & 292 Cam (75) = 8.92 DCR 182.94 PSI Cranking Pressure
DISHED 16CC 10.86 CR & 280 Cam (69) = 8.39 DCR 169.07 PSI Cranking Pressure
DISHED 16CC 10.86 CR & 292 Cam (75) = 7.94 DCR 157.43 PSI Cranking Pressure
On the KB piston website 9.0-9.5 DCR is doable with this setup.
What do people think with this setup or just go with the Higher CR with the bigger cam anyway??
Thoughts please.
Thanks
Mitch