Need help finding valves for N351 heads...
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Lem Evans
dfree383
jbozzelle
7 posters
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Need help finding valves for N351 heads...
Guys,
I have a set of N351 heads I'm trying to put together. The spec sheet calls for the following valves:
Ford Racing M-6505-A351 1.600" Premium Stainless Steel Exhaust Valve N351 Head
•Head Diameter: 1.600"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Ford Racing M-6507-A351 Premium Stainless Steel 2.02" Intake Valve
•Head Diameter: 2.020"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Problem is these valves are no longer available from FRPP. So I dug through the Manley catalog and the valves that Manley list for this specific head do not have the same overall and tip length. At this point I'm lost and need some guidance on what to do regarding which valves are the correct valves to get.
I have a set of N351 heads I'm trying to put together. The spec sheet calls for the following valves:
Ford Racing M-6505-A351 1.600" Premium Stainless Steel Exhaust Valve N351 Head
•Head Diameter: 1.600"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Ford Racing M-6507-A351 Premium Stainless Steel 2.02" Intake Valve
•Head Diameter: 2.020"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Problem is these valves are no longer available from FRPP. So I dug through the Manley catalog and the valves that Manley list for this specific head do not have the same overall and tip length. At this point I'm lost and need some guidance on what to do regarding which valves are the correct valves to get.
jbozzelle- Posts : 3705
Join date : 2009-08-10
Age : 50
Location : New Orleans
Re: Need help finding valves for N351 heads...
jbozzelle wrote:Guys,
I have a set of N351 heads I'm trying to put together. The spec sheet calls for the following valves:
Ford Racing M-6505-A351 1.600" Premium Stainless Steel Exhaust Valve N351 Head
•Head Diameter: 1.600"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Ford Racing M-6507-A351 Premium Stainless Steel 2.02" Intake Valve
•Head Diameter: 2.020"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Problem is these valves are no longer available from FRPP. So I dug through the Manley catalog and the valves that Manley list for this specific head do not have the same overall and tip length. At this point I'm lost and need some guidance on what to do regarding which valves are the correct valves to get.
Call Lem and tell him what you need
dfree383- BBF CONTRIBUTOR
- Posts : 14832
Join date : 2009-07-09
Location : Home Wif Da Wife.....
Re: Need help finding valves for N351 heads...
jbozzelle wrote:Guys,
I have a set of N351 heads I'm trying to put together. The spec sheet calls for the following valves:
Ford Racing M-6505-A351 1.600" Premium Stainless Steel Exhaust Valve N351 Head
•Head Diameter: 1.600"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Ford Racing M-6507-A351 Premium Stainless Steel 2.02" Intake Valve
•Head Diameter: 2.020"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Problem is these valves are no longer available from FRPP. So I dug through the Manley catalog and the valves that Manley list for this specific head do not have the same overall and tip length. At this point I'm lost and need some guidance on what to do regarding which valves are the correct valves to get.
Call Lem and tell him what you need
dfree383- BBF CONTRIBUTOR
- Posts : 14832
Join date : 2009-07-09
Location : Home Wif Da Wife.....
Re: Need help finding valves for N351 heads...
Already did. He suggested Manley.
The valves Manley has are either too long, have a longer tip length, or both. Confused on what to do. Need to check other valve suppliers too.
Just curious if someone put some together recently and figured this out already.
The valves Manley has are either too long, have a longer tip length, or both. Confused on what to do. Need to check other valve suppliers too.
Just curious if someone put some together recently and figured this out already.
jbozzelle- Posts : 3705
Join date : 2009-08-10
Age : 50
Location : New Orleans
Re: Need help finding valves for N351 heads...
Lem Evans wrote:I can get them from Ferrea......5.160" w/.250" tip.
What problems would I have with these being .020 longer than what FRPP spec'd?
jbozzelle- Posts : 3705
Join date : 2009-08-10
Age : 50
Location : New Orleans
Re: Need help finding valves for N351 heads...
jbozzelle wrote:Lem Evans wrote:I can get them from Ferrea......5.160" w/.250" tip.
What problems would I have with these being .020 longer than what FRPP spec'd?
Run 'em... and be done with it...
QtrWarrior- Posts : 2699
Join date : 2008-12-02
Age : 65
Location : Bloomingdale, Ga
Re: Need help finding valves for N351 heads...
So just slightly longer pushrod then? Also, any speculation as to why the Manley valves are slightly longer and have a different tip length?
Some sort of advantage to be had with those valves since the head is to be run in a spec class?
Some sort of advantage to be had with those valves since the head is to be run in a spec class?
jbozzelle- Posts : 3705
Join date : 2009-08-10
Age : 50
Location : New Orleans
Re: Need help finding valves for N351 heads...
.020" isn't any real advantage, not really an issue either..... May not need a longer pushrod, as it will depend on deck height, how much heads were cut..etc..etc..
Just check the geometry and get the right pushrod and it will be fine...
Different tip lenght is probably for use with lashcaps...
Just check the geometry and get the right pushrod and it will be fine...
Different tip lenght is probably for use with lashcaps...
QtrWarrior- Posts : 2699
Join date : 2008-12-02
Age : 65
Location : Bloomingdale, Ga
Re: Need help finding valves for N351 heads...
I purchased mine from a company in florida. I will look up the invoice but it was a few years ago might take some time
AVC
8947 N.W. 23rd Street
Doral, Florida 33172
AVC
8947 N.W. 23rd Street
Doral, Florida 33172
Last edited by Larry Williams on November 6th 2015, 12:44 am; edited 1 time in total
Larry Williams- Posts : 884
Join date : 2009-08-08
Age : 79
Location : Wallacetown Ontario
Re: Need help finding valves for N351 heads...
lash caps or extra room for refacing. X2 run'm.QtrWarrior wrote:.020" isn't any real advantage, not really an issue either..... May not need a longer pushrod, as it will depend on deck height, how much heads were cut..etc..etc..
Just check the geometry and get the right pushrod and it will be fine...
Different tip lenght is probably for use with lashcaps...
cool40- BBF CONTRIBUTOR
- Posts : 7308
Join date : 2009-08-31
Age : 53
Location : on the 1/8 mile dyno
Re: Need help finding valves for N351 heads...
jbozzelle wrote:Guys,
I have a set of N351 heads I'm trying to put together. The spec sheet calls for the following valves:
Ford Racing M-6505-A351 1.600" Premium Stainless Steel Exhaust Valve N351 Head
•Head Diameter: 1.600"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Ford Racing M-6507-A351 Premium Stainless Steel 2.02" Intake Valve
•Head Diameter: 2.020"
•Tip Length: 0.250"
•Total Length: 5.140"
•Material: Premium Stainless Steel
Problem is these valves are no longer available from FRPP. So I dug through the Manley catalog and the valves that Manley list for this specific head do not have the same overall and tip length. At this point I'm lost and need some guidance on what to do regarding which valves are the correct valves to get.
Those sizes are listed in the Ferrea catalog.
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