55* 50* vs 45* valve angles

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55* 50* vs 45* valve angles

Post  bruno on January 28th 2012, 4:08 pm

i was just curiuos cylinder head gurus , on my cylinder heads would the stepper valve angle help out the velocity on the hight lift ?

im really not worried about longevity on the valve job since i only race a handful times a year Very Happy

thxs for the input
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Re: 55* 50* vs 45* valve angles

Post  c.evans on January 28th 2012, 7:16 pm

bruno wrote:i was just curiuos cylinder head gurus , on my cylinder heads would the stepper valve angle help out the velocity on the hight lift ?

im really not worried about longevity on the valve job since i only race a handful times a year Very Happy

thxs for the input

Bruno,

A possibilty is that the 50* valve angle might work okay, but "no" on anything steeper. When doing steep valve angles, it's not just a matter of switching the valve job around, but the chamber shaper has to be compatible with the steeper angles. Meaning that that chamber shape of the Edelbrock heads is not the most conducive to a steep angle valve job. One would need to sink the valves some in order to help make it work.

Charlie

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Re: 55* 50* vs 45* valve angles

Post  bruno on January 29th 2012, 11:21 am

Thxs, ....do you do the same for intake and exhaust
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Re: 55* 50* vs 45* valve angles

Post  BOSS 429 on January 29th 2012, 12:41 pm

just using a different type of valve can help, sometimes the flowbench can be a little misleading, this is where the wetflow come into play, even if the air says no, the fuel can follow better into the chamber.

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Re: 55* 50* vs 45* valve angles

Post  bruno on January 29th 2012, 5:25 pm

BOSS 429 wrote:just using a different type of valve can help, sometimes the flowbench can be a little misleading, this is where the wetflow come into play, even if the air says no, the fuel can follow better into the chamber.


Charlie put in some frpp a429 2.25 intake valves ...i believe ....is there any better ones for my application ?
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Re: 55* 50* vs 45* valve angles

Post  Lem Evans on January 29th 2012, 6:06 pm

You'd be hard pressed to find a better flowing s.s. intake valve than the A429. The "better" intake valve would be made of Ti.

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Re: 55* 50* vs 45* valve angles

Post  605FOX on January 29th 2012, 7:37 pm

Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat study

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Re: 55* 50* vs 45* valve angles

Post  QtrWarrior on January 29th 2012, 8:10 pm

605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat study

Amen !
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Re: 55* 50* vs 45* valve angles

Post  bruno on January 30th 2012, 1:18 pm

605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat study

I was just being inqusitive .......
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Re: 55* 50* vs 45* valve angles

Post  Tennessee Bullitt on January 30th 2012, 1:40 pm

605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat study


Funny I was told this at the seminar. Very Happy
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Re: 55* 50* vs 45* valve angles

Post  jbozzelle on January 30th 2012, 2:48 pm

Didn't Darin Morgan even mention that the "exotic" valve angles are only worth a few HP on the dyno? For most builds just use the typical angles and enjoy it...

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Re: 55* 50* vs 45* valve angles

Post  Lem Evans on January 30th 2012, 8:21 pm

Nick, While valve/valve job evolution , a bigger cam , etc. may give some gains , that is not the bang for the buck.

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Re: 55* 50* vs 45* valve angles

Post  richter69 on January 30th 2012, 11:03 pm

from what I gather you have not even slipped the tip of the fogger in yet...............loose the bars, get a 7531, put the man pills in and go have fun.................. Twisted Evil
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Re: 55* 50* vs 45* valve angles

Post  rmcomprandy on January 31st 2012, 12:43 am

With a 50 degree valve job you can use more duration. If your cam is already to small then it certainly won't help.

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Re: 55* 50* vs 45* valve angles

Post  605FOX on January 31st 2012, 10:14 am

rmcomprandy wrote:With a 50 degree valve job you can use more duration. If your cam is already to small then it certainly won't help.

everybody keeps on saying his cam is too small ....... Bruno why did you go with such a small cam ?

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Re: 55* 50* vs 45* valve angles

Post  bruno on January 31st 2012, 11:08 am

Tennessee Bullitt wrote:
605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat study


Funny I was told this at the seminar. Very Happy

i have no doubt .......
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Re: 55* 50* vs 45* valve angles

Post  richter69 on January 31st 2012, 2:59 pm

What are the cam specs?
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Re: 55* 50* vs 45* valve angles

Post  bruno on January 31st 2012, 3:39 pm

richter69 wrote:What are the cam specs?

you would have to ask Lem for that info
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Re: 55* 50* vs 45* valve angles

Post  richter69 on January 31st 2012, 3:48 pm

Seems like he told me and I domt remember it being that small. Honestly the cam is right for the combo, head type used etc. You gotta remember those eddys aint exactly at the top of the pecking order. Your shit runs damn good for what parts were used.
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Re: 55* 50* vs 45* valve angles

Post  bruno on January 31st 2012, 4:14 pm

richter69 wrote:Seems like he told me and I domt remember it being that small. Honestly the cam is right for the combo, head type used etc. You gotta remember those eddys aint exactly at the top of the pecking order. Your shit runs damn good for what parts were used.

sir i never said anything about small or not running good ........
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Re: 55* 50* vs 45* valve angles

Post  IDT-572 on January 31st 2012, 6:23 pm

bruno wrote:
richter69 wrote:Seems like he told me and I domt remember it being that small. Honestly the cam is right for the combo, head type used etc. You gotta remember those eddys aint exactly at the top of the pecking order. Your shit runs damn good for what parts were used.

sir i never said anything about small or not running good ........


He said you were small.................('Razz')('Razz')('Razz')
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Re: 55* 50* vs 45* valve angles

Post  bigblok2000ranger on January 31st 2012, 10:02 pm

bruno wrote:
605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat study

I was just being inqusitive .......

Nothing wrong with that! Very Happy
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