Originally Posted by 53fordguy
so this set up will set right on a 86-98 350? and if i find older itll sit atop a old sbc? no differences in chamber placement or water jackets?
and the 350 injectors im lookign for are 50lb right, is there 65's for oem?
Pretty much it will fit, the thing you'll have to watch for is the orientation of the 4 intake bolts to the center of the head. In 86/87 these were changed from 90 degrees to the head's port face to 72 degrees. While this happened to most heads there are exceptions so pay attention before calling it good.
- 5.0 uses 5235279, or 5235307 at 45 lbs/hr @ 9-13 psi
- 5.7 regular duty uses 5235206 at 55 lbs/hr @ 9-13 psi
heavy duty uses 17084327, or 17112412 at 68 lbs/hr @ 9-13 PSI
- 7.4 regular duty uses 5235231 at 75 lbs/hr @ 9-13 psi
heavy duty uses 17112560 at 85 lbs/hr @ 9-13 psi
There may be other GM P/Ns I'm not aware of. Also keep in mind that Holley is a big supplier of these things as is Bosch and others. Another good outfit to look for service and parts is Turbo City.
Remember that injector size and computer program have to work together.