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PKRWUD · 08-10-2002, 11:36 PM

The 429 is part of the "385" family of engines (429, 460, and BOSS 429). They are virtually the same as the Clevelands, except that they're larger in size. Neither the 429 or the 351C heads are hemi heads, and both were considered to be "open quench" design, which breathe excellently. The BOSS 429 heads were hemi heads.

Take care,
~Chris

08-10-2002, 11:36 PM	#33
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	The 429 is part of the "385" family of engines (429, 460, and BOSS 429). They are virtually the same as the Clevelands, except that they're larger in size. Neither the 429 or the 351C heads are hemi heads, and both were considered to be "open quench" design, which breathe excellently. The BOSS 429 heads were hemi heads. Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!