GF-90 in 1965

[Gary C.]

The 1965 Technical information manual states on page 97 that the production GF-90 fuel filter has the groove cut in the surface of the end fitting nuts. I am more knowledgable of the 63 configuration without the groove.

Is the manual correct? Was this groove typical of factory installed GF-90's by 1965?

As always, thanks in advance.

[Joe C.]

Re: GF-90 in 1965

Gary:

Yes, the GF 90 has the grooves. The attachment fittings should be approx. 5/8" long. The BB filter, which should be much more expensive, has a fitting length of approx 7/8" , without the grooves.
Counterfeit BB filters use the GF 90, with grooves, but with the appropriate Part number stencilled on it.

Joe

[Wayne M.]

Re: GF-90 in 1965

I agree with Joe -- should have the grooves for 1965. Can't speak for '63 (silver w/red silkscreen and no grooves ? -- have one of these on my '65 now, that I bought in Hawaii about 1980; came in a white box w/blue AC lettering, part # 5650677). At swap meets at least 10-15 years ago, I bought 2 black GF-90's, with grooves, with same 5650677 part #, in A/C-GM red/white/blue boxes. Too bad I can't post a picture to get opinions on whether re-pop or not.

A picture of the engine compartment of my first car, a '65 L79, taken in spring of 1968 just before I purchased it, clearly shows the grooves.

BTW, that (asking) $2000 GF-90 supposed fake is still on eBay -- no takers of course, but eBay hasn't pulled the posting, which I guess means that the previous seller referred to in the description has not complained. The fact that there are NO grooves on this unit means it is not valid for '65. Why someone would go to the effort to make the wrong reproduction surpasses even the surprise that someone would buy it.

Hope no one on this board was the buyer of that GF-416 (396) filter last week. There were no grooves (correct) but the patina was too glossy, and comparing the font with an original that I have showed other discrepancies. I emailed the seller to confirm overall length of 4.7" (incl. the longer fittings) and he never replied. Think he got around $170 for it.

[Chris H.]

Hello......

When is someone gping to step up and reproduce a correct GF-416? How expepensive can the tooling be for someone who already produces the GF-90?

[Dick W.]

Re: Hello......

The current GF-416 is made from a GF-90 which not too long ago was still available. Not sure of the current status. Given the limited number of cars that would need the 416, I doubt that anyone will reproduce it. It would be cost prohibitive

[Mike McKown]

I'm confused as usual

What about the two GF 90's I have that came off orginal '63 fuelies in 64? They're both black, white letters and no grooves in the fittings. Are they now no good for '63's?

[Wayne M.]

Mike -- can't speak for '63's or '64's ...

... but I think the silver/red GF-90 w/o grooves is factory for something prior to 1965. Maybe others can fill me in.

[William C.]

Re: Mike -- can't speak for '63's or '64's ...

1962 FI, silver with no grooves.

[William C.]

Based on the '62

It would not be unreasonable to see the '62 tooling carried over into '63 and possibly '64 without the notch

[Rick A.]

Re: I'm confused as usual

1963 F/I is GF-90 black w/white letters and no grooves

[G B.]

GM photos in Adams' Volume 2 Guide

There are no grooved filters in any of the GM furnished photos. The grooved filters appear only in the non-GM (and I assume later) photos in that book.

Meaningless observations: I have never seen a factory photo of an injected Corvette with a grooved filter. I have never seen a new, genuine AC, GF-90 filter come out of an AC box with black paint or without a groove.

[Clem Z.]

Re: GM photos in Adams' Volume 2 Guide

sounds like orignal equiptment vs replacement parts of the same part #

[Michael H.]

Re: Mike -- can't speak for '63's or '64's ...

I agree with Bill. I have a few factory pic's, some closeup, of new 62 FI units and the filter is silver with no grooves. Pic's not here or I'd post.

Also have several factory pic's of new 63's and the filter color is mixed between silver/red lettering and black/white lettering. Take your pick on 63.

[mike mccagh]

Re: GF-90 in 1965

i have the original fi fuel filter off the grady davis/don blatchley/rick mason 63 ZO6. silver, no grooves. mike

[Michael H.]

Re: GF-90 in 1965

Interesting Mike. I have the original filter that came off of the Ralph Salyer car in 63. Same deal, silver, no grooves.