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Old 07-13-2010, 11:43 AM
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Originally Posted by Jimmy Dean King
I have a 1967 SBC eather 302 327 350 crank and heads are 302 block casting is 3858174 suffix code is F0411YW can any one help me with this thanks
3858174: '64-'67 327cid car & truck 2-bolt

YW: '66 327cid Truck 185HP Base Manual Trans 2-Brl

So, this amounts to a low compression (for then) base small journal 327.

Unless the heads originally had 2.02" x 1.60" valves and screw in studs/guide plates, they're not from a 302. Head castings like the 461, 462, 291, 186, etc. were used in 1.94" x 1.50" valve size (w/o plates and screw in studs) as well as 2.02 x 1.60" valve sizes...
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