doc_rot said:i went and looked at the instructions for the carb sync and the nozzles in the ends are dampers, they need to be the correct distance from the carb sync to smooth the vacuum pulses out, on mine its 90cm away from the tool. the motion pro may be different. It sounds like you can add some tube in front of that and be fine.
btw that van is awesome.
Thanks Doc. I run a 40 channel cb radio on road trips and a stereo with a 300w powered sub in it. It's my 4th chevy van since I was 17. I love them. This one is the long body and is lined all through the back with duraliner panels on the walls and floor. Nothing better for hauling bikes and camping (to me). I've been driving it out to Alabama for the Barber Vintage Festival for the last few years.