All Small Six Valve length

[N₂O200]

I’ve been searching for the factory valve specs (overall length and tip length) for the 200 but haven’t found anything. Anyone have the specs on these and also where to get factory replacement valves that are actually in stock?

Thanks!

 

[pmuller9]

OAL is 4.260"

Intake Valves Interchanges:

Agkits 01268
AE Clevite - 251717
Dana/Perfect Circle - 2111936
Dynagear/Manley - S1584
Elgin - I1584
Federal Mogul/ Sealed Power - V1970
Ford - D2DE6507AA, D2DE6507EA, D2DZ6507A, D2DZ6507E
Martin Wells - 157IN
Melling - V1268
Pioneer - VI1584
TRW - V2531, V3987
Wolverine - V2531

Exhaust Valve Interchanges:

Agkits 01266
AE Clevite - 261983
Dana/Perfect Circle - 2111933
Dynagear/Manley - A1585, A1921
Elgin - E1585
Enginetech - V1585
Federal Mogul/ Sealed Power - V1983
Ford - D2DE6505AA, D2DZ65053, D2DZ6505A, D2DZ6505C, E1AE6505EA, E1AZ6505A
Martin Wells - 106EX
Melling - V1266
PEP - P2530
Pioneer - VE1585
TRW - S2530
Wolverine - V2530

 

[drag-200stang]

I’ve been searching for the factory valve specs (overall length and tip length) for the 200 but haven’t found anything. Anyone have the specs on these and also where to get factory replacement valves that are actually in stock?

Thanks!

What year head are you using some of the late models used a larger intake valve, it went from 1.651 to 1.75.

 

[100_2023]

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[78_200_C4]

The valves are too short for high lift cams which can result in valve spring bind.
This includes the CI aluminum head.

 

[100_2023]

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[wsa111]

Call Classis Inlines & see if they have any SI valves in stock. Their flow is superior. After you lap the intake valves in take a 30 degree cut to the lap in line for superior flow.
The 30 degree cut applies to any valves.

 

[N₂O200]

What year head are you using some of the late models used a larger intake valve, it went from 1.651 to 1.75.

It’s a C9 casting with the 1.65 intake. My machine shop said he could cut the head and go to the larger 1.75. Just need to find a larger exhaust valve.

 

[N₂O200]

If you will note the detail, he is looking for factory replacement valves. These are factory replacement valves. They should all be good for a .440 lift.

The camshaft I’m using is a Clay Smith cam H-6474-0-B with .450 lift with the factory 1.5 ratio rockers. I’d like to use a larger exhaust valve too if there’s one available.

 

[N₂O200]

Call Classis Inlines & see if they have any SI valves in stock. Their flow is superior. After you lap the intake valves in take a 30 degree cut to the lap in line for superior flow.
The 30 degree cut applies to any valves.

He’s out. He does have the stock replacement valves which is fine for what I’m doing with this engine.

 

[100_2023]

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[100_2023]

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[N₂O200]

You are using the same Clay Smith camshaft I have in my 200 engine, except I am using the Yella Terra 1.65 ratio rockers that make it a .485" intake valve lift & a 4.95" exhaust valve lift. I am using 1.75" intake valves & 1.5" for exhaust valves. I used some Crower double springs & retainers, Viton seals & K-liner bronze valve guide inserts. My other engine has the 480/480 lift single pattern cam H-64/64-0-B using 1.65 ratio rockers. It has the same valve setup.

Can you DM me your contact info? I’d like to get the valves I need and see what else you may have.

 

[100_2023]

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