Advanced Engineering Tech - C5R head history....racer only?




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grb
03-27-2009, 07:59 AM
Was the C5R head racer only in '02? Anybody remember? Seems like I saw them for sale by Katech (used I know) and probably others.

What was special about the C5R head? Vein port which supposedly twists the intake charge? Sounds like BS to me. The intake ports look normal. Anybody know?


grb
03-29-2009, 02:34 PM
I seem to remember buying a set of used Katech heads from El Es One (?) in '02. And it seems like SCPC or some other GM pefermance dealer listed them on their site.

grb
04-09-2009, 06:01 PM
Here's an easy one. Were the first C5R engines 346 CI?

Bonus Points: who pioneered the C5R engine? Katech?

What is the biggest diffence in a LS1 piston and a C5R assuming same size engine?


grb
04-11-2009, 07:40 AM
Maybe I should move this to Gen III External, eh??

baker67nova
04-14-2009, 06:22 PM
the c5r head is a 11degree head while a stock ls1 is 15 degree.thats what et performance told me.i bought a set of them before i knew this and my valves hit the pistons

elias_799
04-14-2009, 10:53 PM
Here's an easy one. Were the first C5R engines 346 CI?

Bonus Points: who pioneered the C5R engine? Katech?

What is the biggest diffence in a LS1 piston and a C5R assuming same size engine?

the c5r is a 7.0 liter (427ci) ls1

grb
04-15-2009, 08:45 AM
Yes, but were early C5Rs 346? I don't think so because there has only been one C5R block and it was used to build 427s. Did the factory want a stouter 346? I don't think so.

OKcruising
04-21-2009, 07:19 PM
There were indeed white-body C5R's in 99 if I recall. 346 cube engines.

SStrokerAce
04-23-2009, 02:36 PM
Early ones were 6.0L's At least the C5R race cars were

grb
05-22-2009, 08:37 AM
When were first 427 CI C5R built? Who built them? Did the early 427 ZL-1s get some of the first C5R 427s????