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Clifford twin weber kit

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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Sep/16/2017 at 12:22pm
The intakes bolt on, but you might need to modify it or use a header, which is costly for a pre 80 engine. Offy still makes a DP intake that will bolt to the stock exhaust manifold. Most you will find are 1980+ and won't work with the early (pre 80) exhaust manifold that bolts to the intake. You can use a 1981-89 258 (4.2L) Jeep exhaust manifold on the earlier head though. That's a much less costly solution than a header.

While a 4.0L head won't do a lot by itself, if you really want a header and you have a plastic valve cover 258 and want to get rid of that plastic cover too, get a used 4.0L head, factory header, and valve cover. Not hard to fit to the older engine head. Lots of articles on 4.0L head swaps. You can use a 1981-89 2V intake or any of the aftermarket 4V intakes on a 4.0L head easily. The head/exhaust/VC from a junkyard will be no more than a header alone (new) for the 258... and maybe even if the head needs rebuilding. I'd get a head while I could -- stopped making the 4.0L in 2006, so they will start drying up in junkyards over the next 5-10 years, pretty easy to find now.
Frank Swygert
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