Same block, different bore/stroke/crank/piston/rod/etc.

While the 2.6/2.3 heads will physically bolt up, they are different heads beyond the type of fuel delivery. 2.6 head on a 2.3 block will yield lower compression. 2.3 head on a 2.6 block will yield higher compression. You don't want to lower the compression at all. It'll become even more anemic than it already is.

Richard <img src="/forums/images/graemlins/patriot.gif" alt="" />

Had an 89 Isuzu Pickup
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84 Honda XL185S
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01 Toyota Tundra SR5 V8 4Door Access Cab
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