Long-time no post; here is some news to me that may or may not be for others:

Holley is no longer producing the 3210 TBI replacement many of us use on 2.8-3.4L Chevy V6s. This is the claim of all Holley dealers I have spoken with.

Holley Tech (after a 20min wait) told me they do not offer injector replacements for the 3210 (I did not learn of no TBI's until my calls later to dealers).

Holley does offer an upgrade kit, giving you a new "pot" that swaps out to hold the new injectors (figure $80 from what I found as a good price), and injectors for $85/ea. They claim these are much better than the old ones. How? He was not real specific, but alluded to efficiency, etc.

I got to these questions by finding one of my injectors is only intermittantly spraying. Cleaner has not solved it. I was going to do a cleaning service, but learned of the above issue and figured I better upgrade in hopes the replacements will last another 6-8yr or more.

Should a guy buy extras? Not sure. Am I way wrong and can anyone tell of a source for the TBI's new? I was told by Holley that it as 1-1.5yr ago that they did the upgraded injectors (he made it sound like they still offered the 3210, and the web site still shows it).

Cheers,
WomBAT Man