I wanted to know if a 86 TPI throttle body could be used in a 91 speed density setup? I'm trying to piece together the last of my 383's intake. I'm using a TPIS bigmouth, SLP runners and a stock upper plenum (siamesed). The last parts I need are fuel rails and a throttle body, both of which I intended to use 86' parts. Thanks for any replies.

 

Found on this website

http://www.fuelinjection.com/portinj.html


NOTE: Throttlebodies 85-88 are the same and must be matched to plenums 85-88. To work properly on 90 and up plenums a hole (1/2") must be drilled, between the intake openings where the throttle body mounts, to allow for passage of idle air from the IACV to the plenum. 89 and up throttlebodies will work on earlier plenums without modifications.