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Old 11-08-2020, 07:55 PM
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Cliff Cliff is offline
350 Buick
 
Join Date: Mar 30, 2002
Location: Upper East Tennessee
Posts: 772
Since you already have a 258 I would go with the 4.0 head, plus you could do some other cool mods. Lots of goodies for the sixes. My son is building a 258/4.0 for his AMC Spirit - raising the CR, Clifford manifold, Holley 390, split headers, Lunati RV cam. He's using a 5-speed so I don't have much to contribute regarding the tranny, but the 200 and 700 GM 4-speed auto tranny's are possible too.
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Cliff Danley
1977 Cherokee S

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