Can someone please post me a pic of your Evaporative canister from a TPI set-up? My carb set-up does not have a purge solenoid and electrical connections on the canister itself. I want to know exactly what I am looking for when I go to the bone yard on Thursday morning.
Tony

 

One side looks like this:



Sorry, but I don't have any of the carb (TVS type) EVAP canisters.

 

i put a canister from a 1986 2.8 mpfi firebird on my 1986 tpi trans am and it works fine

 

Thanks for the pics!

 

This is the TPI version for 1986:

 

hey Vader?, what would happen if you didnt get that purge solenoid and ran with out it? Im almost done with my carbed 305 to TPI 350 swap and i still have the charcoal canister for an 86 305 carbed.

 

Carbed versions used a Ported Vacuum source to signal the Canister Control Valve. Ported Vacuum is vacuum off idle. The port sits above the throttle plate so that there is no vacuum when idleing. The whole point was to prevent the canister from purging when at idle, due to the low volume of air.

On fuel injected cars, in uncommon to find ported vacuum because the ECM just used an electric solenoid. You can still use the carbed canister, just use an external purge solenoid on the "purge" line, and let the TPI computer control it.

 

Thanks GM Tech. So i just buy the purge solenoid for a TPI canister and mount it externally to the cannister I have now?