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Head semantics (531 Head Casting); Reply to Jason ALL 75-98

posted by  someone claiming to be Mike on  Sun Jan 28 19:24 CST 2001 [RELATED]

Jason:

>How does the 398 head rate for use on a NA motor?

The 398/BCP was used as oem (and hence rates as a 160/BCP or the newer 530/SCP casting) on all NA emgines except the B23E up to 1983 (B23E 1979-1983 ran the 405/BCP) in the later/last years on the two-digit engines (i.e. the Bxx) and was replaced by the preferable 530/SCP (or 531/SCP) in 1985- i.e. with the entry of the three-digit engines (i.e. the B200/B230/B250).

It was mainly a BCP designs but I believe there was same late trial SCP version in the late 1984, as well.

If it were my engine I'd change to a SCP head, even with-in a oem set-up.

NB: It is possible to INDEED enhance the perfomance of the smaller heads (and obviously also the "bigger" 531 heads) via a modification of the SCP 530/531's both for NA as well as boost use accompanied with modern & purposemade high lift cams.

I have a file on this matter; just send me a mail and ask for it.

Best regards

Mike

Luleå

North of Sweden





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New 531 Head Casting [ALL][198x]
posted by  someone claiming to be Brad  on Fri Jan 26 11:50 CST 2001 >


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