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.

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

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

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.

I can get them from Ferrea......5.160" w/.250" tip.

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 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...

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?

.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...

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

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...

lash caps or extra room for refacing. X2 run'm.

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.