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  #1  
Old March 14th, 2019, 20:51
tech1001 tech1001 is offline
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big valve head

Has any body used the head with bigger valves and did you gain any more power and about how much do you think it was and are you happy with the head ? Odessa Cylinder Head sells one with a 2.02 intake valve and 1.62 exhaust valve , I would all so clean up the ports . thank you for any info you can give me .
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Old March 14th, 2019, 21:35
RCP Phx RCP Phx is offline
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Re: big valve head

I run one of Russ's LS1 valve heads but it's fully ported and on a stroker. The intake is ported and bored for a 62mm throttle body. What else on the motor do have you done?
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Old March 15th, 2019, 06:52
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denverd1 denverd1 is offline
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Re: big valve head

stock head flows pretty good. if you haven't done intake/exhaust, I'd start there.

if I were to do a big valve head, I'd definitely move to a bigger lift/duration cam to take advantage of those valves. so make sure you have springs on the head to handle such a cam if that's of interest.
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Old March 15th, 2019, 09:20
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cal cal is offline
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Re: big valve head

Yeah going big valve isn't going to matter without a port and polish, and a cam. That becomes a whole thing.
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Old March 16th, 2019, 00:57
tech1001 tech1001 is offline
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Re: big valve head

I did want to clean up the ports and run a set of roller rockers , I'm not looking for a lot .
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Old March 16th, 2019, 06:38
RCP Phx RCP Phx is offline
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Re: big valve head

For 50yrs I've told my customers "you can't get it in, until you get it out".
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Old March 18th, 2019, 01:54
tech1001 tech1001 is offline
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Re: big valve head

I did forget to say that the head on my jeep now is cracked so I will be buying a replacement head , I just don't know witch one yet .
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Old March 18th, 2019, 17:53
tech1001 tech1001 is offline
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Re: big valve head

Quote:
For 50yrs I've told my customers "you can't get it in, until you get it out".
I hate saying like this , What are you trying to say?
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Old March 18th, 2019, 21:44
RCP Phx RCP Phx is offline
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Re: big valve head

Quote:
Originally Posted by tech1001 View Post
I hate saying like this , What are you trying to say?
"You've got to get the exhaust charge out before you can get intake gasses in"
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Old March 19th, 2019, 09:44
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denverd1 denverd1 is offline
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Re: big valve head

Quote:
Originally Posted by RCP Phx View Post
"You've got to get the exhaust charge out before you can get intake gasses in"
thank you cam, exhaust valve and compression stroke?

should he run bigger exhaust valves than intake? longer exhaust duration? turbocharge it?
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