Dynamic Compression Ratio How much is to much?

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Feb 16, 2013 | 09:32 AM

#11

chevrolet all the way

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From: trussville alabama

I cant see sigs so im blind. what engine are you building? seems like a serious build with that much compression, but a small cam for a big motor.. so im a little lost!

Feb 16, 2013 | 09:46 AM

#12

Yohns Kustom Fab

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From: Bushnell Fl

It's an 05 ss. Lq9, heavily ported 241s, 57cc chambers, ported tbss intake and tb, 219/227 .607 .614 112lsa, Long tubes, full 3" into xpipe,

Feb 16, 2013 | 10:36 AM

#13

RoadKill03

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I've ran DCR from 8.5-8.8 and has worked very well for me.

If you built it with that high of SCR, why not hit it with a good size cam to take advantage of the High CR?

Feb 17, 2013 | 11:14 AM

#14

dirty_old_chevy

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From: Alberta, Canada

Umm.. Isn't a stock l33 close to 9.5:1 dcr and can run on 87?

Feb 17, 2013 | 11:24 AM

#15

Yohns Kustom Fab

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From: Bushnell Fl

Dirty hit it right on the head. The vmax is damn near the same way by my calculations.

Feb 17, 2013 | 11:30 AM

#16

Yohns Kustom Fab

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From: Bushnell Fl

I'm gonna leter eat. This combo should make nasty torque everywhere. I'll post results asap

Feb 18, 2013 | 12:06 PM

#17

53bowtie

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From: Detroit, MI

Quote:

Originally Posted by dirty_old_chevy

Umm.. Isn't a stock l33 close to 9.5:1 dcr and can run on 87?

Do you have a source for this? Sure your not thinking of the SCR instead?

Feb 18, 2013 | 12:50 PM

#18

dirty_old_chevy

Launching!

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From: Alberta, Canada

As far as I know, the scr is 9.9:1, as for camshaft duration, I've seen 191/190 and I've seen 193/193 @.050.

Feb 18, 2013 | 03:29 PM

#19

dirty_old_chevy

Launching!

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From: Alberta, Canada

114 lobe separation angle.

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