[DeTomaso] Yates C3

[Daniel C Jones]

> Are M-6049-C3 YATES CYLINDER HEADS Cleveland heads?

There were two different heads that carried that part number.  The first
were part of the Ford Motorsport high port aluminum Cleveland family of
heads (A3/B351/C3/C302/C302B) and are essentially C302/C302B heads.  Since
that family of heads was originally based upon iron 4V heads, they are
compatible with Cleveland pistons and valvetrain.  Except for the intake
and exhaust manifold differences that are required by the port location and
shape differences, these heads were designed to be 1-for-1 replacements for
Boss 351 cylinder heads.  They use a Cleveland style quench chamber and
standard 302 Boss/351 Boss/351C/351 SVO valve train parts (will accept
2.19"/1.71" valves).  They have cast iron seats and guides (titanium valve
compatible) and are set up for studs and guide plates.  They are also cast
with combustion face and front and rear coolant outlets to allow use on
Windsor, Cleveland and SVO blocks.  Pipe plugs are provided to seal the
threaded openings as required.  A matching intake is required (A331, B351,
D351 Ford Motorsport, Edelbrock AH II for 9.2" blocks) and there are
off-the-shelf high port headers for Panteras.

Ford re-used the same part number for the first Yates heads.  Those did
away with the cant angle (requires custom pistons) and use an expensive
rockershaft system.  Most had very small combustion chambers (40cc).  Ford
re-introduced that part a few years ago:
https://fordperformanceracingparts.com/parts/part_details.asp?PartKeyField=1272

Be aware that many sellers refer to the early heads as Yates and are often
unaware of the differences.  If you can send pictures, I can tell you which
heads they are.

Dan Jones
-------------- next part --------------
   > Are M-6049-C3 YATES CYLINDER HEADS Cleveland heads?
   There were two different heads that carried that part number.A  The
   first were part of the Ford Motorsport high port aluminum Cleveland
   family of heads (A3/B351/C3/C302/C302B) and are essentially C302/C302B
   heads.A  Since that family of heads was originally based upon iron 4V
   heads, they are compatible with Cleveland pistons and valvetrain.A
   Except for the intake and exhaust manifold differences that are
   required by the port location and shape differences, these heads were
   designed to be 1-for-1 replacements for Boss 351 cylinder heads.A  They
   use a Cleveland style quench chamber and standard 302 Boss/351
   Boss/351C/351 SVO valve train parts (will accept 2.19"/1.71" valves).A
   They have cast iron seats and guides (titanium valve compatible) and
   are set up for studs and guide plates.A  They are also cast with
   combustion face and front and rear coolant outlets to allow use on
   Windsor, Cleveland and SVO blocks.A  Pipe plugs are provided to seal
   the threaded openings as required.A  A matching intake is required
   (A331, B351, D351 Ford Motorsport, Edelbrock AH II for 9.2" blocks) and
   there are off-the-shelf high port headers for Panteras.
   Ford re-used the same part number for the first Yates heads.A  Those
   did away with the cant angle (requires custom pistons) and use an
   expensive rockershaft system.A  Most had very small combustion chambers
   (40cc).A  Ford re-introduced that part a few years ago:
   [1]https://fordperformanceracingparts.com/parts/part_details.asp?PartKe
   yField=1272
   Be aware that many sellers refer to the early heads as Yates and are
   often unaware of the differences.A  If you can send pictures, I can
   tell you which heads they are.
   Dan Jones

References

   1. https://fordperformanceracingparts.com/parts/part_details.asp?PartKeyField=1272