Car is originally from CA (so I'm told). One tailpipe hooked up to catylitic converter. Noticed that the heat risers below intake manifold are cut before they would bend down to the exhaust. Is this normal? (I'm sure Speedy J would say not). I'm not even sure where I'd connect the heat risers as I see only one cutout in the tin (left side only).
Engine was rebuilt several years ago and all was working OK. At the moment, I'm trying to figure out idle problems (to check fuel starvation, new carb didn't fix anything) and highway speed drop offs...wondering if this has something to do with it.
Tom