Yes it will fit on a stock duke. I put one on my '87 about a month ago and it looks great! You have to drill a hole for the PCV valve, relocate the temp sensor and the EGR valve, replace one head bolt with a non-stud version, move the ground wires from the head bolt to a trans attach bolt, and on my car I had to trim the throttle pulley mouting plate a little. Also one of the cover mounting bolts was a little too long so I had to trim it as well. It fit under the stock notchback decklid and even clears the lifting spring arms. I got mine from Summit and they got it from GM Performance Parts who got it from Edelbrock (three labels on the box in that order).
Posts: 1962 From: Westlock, Alberta, CANADA Registered: Aug 2002
Yes and no. It will bolt up no problem and you would have to use the SD-4 intake gasket. Problem is it is a hair away from the trunk wall. There s no room for movement. If you want to use it you would have to modify the trunk wall. Found this out after spending a lot of dough on a custom spacer to fit a twin injector TBI
Thanks again guys. I have so much more respect for the 4cylinder 2.5 now. I have an 86 GT but I have this 86 coupe I have been working on and I have found it to be much easier. Not to mention it has been pumped to over 300hp for racing applications. Thanks again. Lee