ET C5R heads

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Jun 29, 2006 | 11:06 AM

#21

AU N EGL

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From: Rolesville, NC

Quote:

Originally Posted by Haans249

Infact, no, the ET LS7 heads outflow the ET C5R heads by alot. Look at the details. Regular GM C5R heads don't outflow GM LS7 heads, infact, its the otherway around as well.

Care to post some side by side flow numbers??

Jun 29, 2006 | 12:04 PM

#22

Abdullah

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From: Kuwait

Quote:

Originally Posted by AU N EGL

Care to post some side by side flow numbers??

here are the flow numbers from ET website :

i will put the flow numbers side by side to compare, note the intake port volume :
255cc C5R 240cc C5R 4.1" LS7 262cc
Valve Lift Intake Intake Intake
.100" 68 66 78
.200" 156 153 166
.300" 211 216 247
.400" 290 277 307
.500" 334 325 340
.550" 345 343 355
.600" 358 363 365
.650" 371 376 374
.700" 382 388
.750" 390 397

so you are correct Adrian. but how about the port velocity between the three which head has the best port velocity?

Last edited by Abdullah; Jun 29, 2006 at 12:56 PM.

Jun 29, 2006 | 12:44 PM

#23

AU N EGL

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From: Rolesville, NC

Thank you Sir. I will add those to my Head Flow spread sheet.

Jun 29, 2006 | 01:18 PM

#24

Abdullah

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From: Kuwait

Quote:

Originally Posted by Haans249

There are many different degrees of race motors, the one you mentioned is just one and I think anyone would consider the LS7 a race motor.

Best of Luck with everything,
Adrian

any one can tell what is the mean of canted valve heads and what is the difference between canted valve heads and regular heads?

thanks.

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