L31MaxExpress
I'm Awesome
Just looked in the pictures I have taken. The factory Mexican L31 Vortec TBIs appear to have used the factory TBI neck and hose. This was GM engineered not a swap. Manifold hose does appear to have been specific to the TBI Vortec setup as the suction line has a revised angle to clear the aircleaner.![]()
The front area of my engine is a bit more cluttered, mainly from the AC lines so it' not ideal to use the TBI housing and hose. I found 2 more possibilities for T-stat housings in the 4 Seasons catalog, my local Napa will have them in tomorrow so I can see if either one gives me some clearance over the EGR tube. I also tried the upper house from the 4.3 housing, it actually fits a bit better then the Vortec hose.
I'm at a cross roads as far as the AC goes- the receiver/dryer for a '98 doesn't really bolt up to the line from the evap core in my '88, and it seems that '88 was it's own odd ball year for that dryer. As I look at the '98 dryer that I have on hand, it's not going to be easy to adapt so I'm starting to think that I need to use the one for the '88 and have a hybrid hose made for the suction line from the compressor. The easiest way will be to cut off the hose with the dryer fitting from the '88 and have it spliced crimped onto the hose assembly from the '98.
You must be registered for see images attach
Same setup, different truck. This one was on Facebook marketplace in my area. I do find it odd that some of these have top post 48 series batteries. The 250 inline 6 Grandblazer did too.
You must be registered for see images attach
Last edited: