A.I.R. Injection on TBI 454 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*JCampbell* · 03-03-2012, 11:50 AM

What year did GM stop using A.I.R. injection on the TBI engines? I just picked up a '90 C2500 Suburban w/ a TBI 454 for the engine/trans and I noticed it didn't have it.

Desert1957 · 03-04-2012, 10:31 AM

I have Never seen Air Injection on any TBI engine , I have two 87's (first year for fuel injection) with TBI , that don't' have it.

Desert

rfmaster · 03-04-2012, 12:49 PM

Quote:

Originally Posted by Desert1957

I have Never seen Air Injection on any TBI engine , I have two 87's (first year for fuel injection) with TBI , that don't' have it.

Desert

Sir - you probably have Federal Emission Certified trucks. The '87 SBC (305/350) were equipped with AIR for CA certified light duty trucks. Seen a few of them at JY. However, in grand scheme of things AIR is not needed on EFI trucks - it is only used during cold start to bring CAT up to temperature depending on ECM calibration. The rest of the time it is not used (except perhaps during WOT, which I have yet to see). Things can be very strange here in Kalifornia!

//RF

*JCampbell* · 03-04-2012, 02:05 PM

Quote:

Originally Posted by rfmaster

Things can be very strange here in Kalifornia!

//RF

You said it.

03-03-2012, 11:50 AM	#1
JCampbell Account Suspended Join Date: Apr 2008 Location: Hesperia, Ca Posts: 1,332	A.I.R. Injection on TBI 454 What year did GM stop using A.I.R. injection on the TBI engines? I just picked up a '90 C2500 Suburban w/ a TBI 454 for the engine/trans and I noticed it didn't have it.

03-04-2012, 10:31 AM	#2
Desert1957 Registered User Join Date: Apr 2009 Location: New Freedom Pa. Posts: 1,335	Re: A.I.R. Injection on TBI 454 I have Never seen Air Injection on any TBI engine , I have two 87's (first year for fuel injection) with TBI , that don't' have it. Desert



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.