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Old 10-13-2002, 05:46 PM
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Post Ford guys-please help 351 Cleveland

i bought some stock length stainless 351 Cleveland valves and installed them in 4V heads. the valves are 2.19/1.71 with 11/32 valve stems. the valves have one groove small block chevy style keepers. when i install the valve springs and stock retainers, the valve spring installed height is way off and there is no valve stem above the retainer. i reinstalled a stock valve and keepers and everything checks out fine. evidently, the chevy keeper isn't compatible with the stock 351C retainers. anyone else have any expertise in this area? anyone have any recommendations on aftermarket retainers? help would be greatly appreciated.

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Old 10-13-2002, 09:21 PM
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Crane makes the retainer your looking for, here's a <a href="http://www.blueracer.cranecams.com/fordcleveland.htm" target="_blank">link.</a>
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Old 10-13-2002, 09:27 PM
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You need to contact the valve manufacturer's TECH HOTLINE in the morning and ask what type of spring retainers are to be used and the purpose of the Chev. locks.

Who is the manufacturer?
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Old 10-13-2002, 09:37 PM
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Good Investigative work 4 Jaw

Excert from CRANE site;

[quote]IMPORTANT NOTE: Many problems can occur if the proper valve spring retainers are not used on 351C-351M and 400 cu.in. engines. Ford made a number of production changes in these engines, possibly causing a misapplication of parts. Please refer to the following explanation to insure that the proper components are being used.

1970-1977 351C-351M-400 Engines: Both intake and exhaust valves use multiple groove valve stem locks, with a large outside diameter, requiring the use of 3/8 type valve spring retainers.

1978 351M-400 Engines: The intake valves use multiple groove valve stem locks, requiring the use of 3/8 type valve spring retainers. The exhaust valves use standard single-groove valve stem locks, requiring the use of 11/32 valve spring retainers.

1979-1982 351M-400 Engines: Both intake and exhaust valves use single-groove valve stem locks, requiring the use of 11/32 valve spring retainers.

1971-1972 Boss 351 Engines: Both intake and exhaust valves use single-groove valve stem locks, requiring the use of 11/32 valve spring retainers.<hr></blockquote>

But he still needs to contact the manufacturer of the valves for their recomendation and reason.

There is something about the locks used that is special. It might require the use of 7 degree locks rather than 10 degree, requiring the use of special retainers.
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Old 10-15-2002, 07:03 PM
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REV is the manufacturer of these valves. the problem is with the keepers. i found a small crack developing in one of the retainers, so i'm going to replace the retainers and locks.
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