so i found a 1500 V8 similar to age to the 3500 i own, but it (among other parts that the 3500 is needs) has Air conditioning, so the question i pose to you gentlemen can the hvac system from the 1500 to the 3500?,

Also does the 1500 use the same TPS as the heavy dutys to run the trans?

 

the HVAC system should interchange.

Not sure about the TPS.

 

im gonna assume your refering to your 91, no the TPS wont work, gas TPS is 28 bucks, the diesel TPS is 200 at the cheapest, replace it with a potentiometer, its a normal modification......AC compressors are different also.....

 

no i was reffering the 3500 2nd gen 94 which i have not the 91

 

both 5.7 motors? You can always look up parts for each on OReilly's website and compare part #'s

 

hvac should be intertcangabel i greatly doubt the tps is

 

A better parts search engine is partsamerica.com

O'Reilly is getting better, but is still behind Advance Auto Parts in technology (this coming from a previous and possibly short future O'Reilly counter jockey)