The long term sustainability of the GT-40

[Kman]

Hey guys 20 year owner of Correct crafts here. I'm currently looking to upgrade to a SAN. My ol trusty sport has been a great boat with very few issues over the last 10 years ,but it's time for a change. This is one of the TBI Gt-40's. As you are all aware this was a short run for PCM and those injection parts are looong gone.... carbs are the only alternative which at least is an option.

Reading through a few post my understanding is that Gt-40 multiport ecm's are no longer available as Well as a few other odds and ends. Well Fdarn .... these motors last for 3000 plus hours . I guess the question is, is there REALLY an after market solution ? I realize these ECM's typically see a low failure rates ,but when you look at the long term ownership of a SAN / GT-40 is this really the direction a reasonable buyer should go especially when the boats are pulling on average 20k ?

Curious what your thoughts are.

Kman

[gary s]

Not a problem it's already been solved by some clever people here. I have one as a spare it runs the same as the original. Here is the original thread-

[Tom_H]

A couple points - first your TBI engine has GT-40 heads, but is not a "GT-40." That moniker refers to the multi-port EFI version. Yours would be a 351W Pro Boss w/Pro-tec ignition, and yes, the common route when the Protec takes a crap is to revert to a carb/distributor. Most of the actual injection hardware is still somewhat available though, as it's just a Holley TBI unit. They just don't do production runs all that often, so you could be backordered for a while like I was with an IAC valve last year.

Technically speaking, you could install a different fuel injection system, but it'd be costly and not much gain over a well-tuned carb on that engine.

Regarding GT-40 ECUs, as gary mentioned, people are having success with repair/replacement of existing ECUs, now that OEM replacements no longer exist.

The GT-40's a great engine, but if you have the budget, it wouldn't be a bad idea to look into one with a 5.7, as the parts will be a little more readily available.

[Kman]

Tom,
Correct on all points. I read through the ecu thread before this post ,but was not real clear if the conversion worked 100%.Thanks Gary for your clarification. My opinion lately of CC and PCM is a little disappointing . Neither group really cares about supporting or giving support to their older platforms.

I've always been a CC/pcm owner because they produce a product at stands the test of time. For example I was looking at an 04 SAN with a zr-6 and wanted the spec compression numbers. After searching the www I didn't find any technical specs so I called CC and PCM . The responce was ...... we don't deal with those older models .... Have you gone online .....


My thoughts are these "older models " are still running 20 to 35k and still do a great job ..... it would be nice if they supported their COMPLETE product line. My be they should have put more effort in engineered obsolescence seems we are pentilized because they produced a quality product..