GF-90 Fuel Filter for 1963 Z06

[Verne Frantz]

Re: GF-90 Fuel Filter for 1963 Z06

Thanks Michael,
As for Jan. '64, who knows? I was wondering when the groovies first showed up.
Doesn't anyone have some pictures of a correct '64 365 top end? This car I'm about to work on deserves to be put back together correctly. I don't want to use the word "survi----or", but it is a very nice left-over original car. For it's sake in history, it needs to be treated nicely from now on.

Verne

[G B.]

I never sausage a thing!

This is not a faked photo. It's a real GF-99 (with the vent hose nipple pinched shut) that I found on a fuel injection unit at a swap meet. I'm not implying that GF-99's were used on FI Corvettes. Please look closely at the end fittings. The hex on the left end has the grooves while the one on the right doesn't.

Dare I say it? Perhaps the filter manufacturer just used whatever fitting nuts came from his supplier without really looking at them.

[Michael H.]

Re: I never sausage a thing!

Jerry,

That's interesting. A friend down the street has a turbo 64 Corvair and he's been stock piling GF-99's for it. I'm going to look at them tomorrow, see if there's a variety of grooved/ungrooved. Of interest is the fact that most are black, not the usual silver that the service GF-90's are.

[Michael H.]

Re: GF-90 Fuel Filter for 1963 Z06

Verne,

I've been searching through more factory pic's but haven't run across any that are of a 64 365/375 HP. Yet. If I find something, I'll post it.

I'm still not 100% convinced that ALL 63's were without the grooves, although it does seem like that would be correct, at least from the few pic's that we do have.

The 64 365 HP car that I purchased new had, I believe, a silver filter, but I'm not positive. I'll try to find some engine shots of that car.

[John D.]

Re: I never sausage a thing!

Michael and Jerry, I have seen a little massaging on the judging field of the GF99's being used. In 2000 at the National NCRS meet at the Corvette Museum I saw a mid year (won't tell what year) that fooled the judges big time. They were salavating over a black filter on a fuel car that lacked the grooves. When they left the car I leaned over the fender and saw that it was a massaged GF 99. So when I saw the car owner he said to me, "DeGregory you had better shut up about this". Well I kept the secret for 6 year. I have seen a lot of the GF-99's without the grooves and have seen some with a groove on one end and not the other. But as far as the GF-90's the ones I have in the black and orange box that come with the two fittings for the '62 have a very slight groove. I would hate to think that some one would put a crappy used no groove one on a restored car and plug up the fuel unit. We dwell too much on the grooved filter and should concentrate more on shock washer instead. John

[Michael H.]

Re: I never sausage a thing!

John,

GF-99 filters that mysteriously become GF-90's isn't a new trick. That's been going on for decades. Occasionally, they turn up on ebay and sell as originals.

One "reincarnation facility" in Noo Yawk seems to have a constant supply of black GF-90's available, although I haven't seen any advertised lately.

[John D.]

Repro AC GF-90

Michael and others, The AC GF-90's are being reproduced in small quantities now. It seems to be a big secret though. That's why various dealers have them in stock. I heard that Neil Porter of Vette Products of MI is the main man. I was supposed to get a sample from a friend but it never showed. I understand that the filter has the notches though. Must be a manufacturing thing that causes the notch. Anyhow hopefully the filter is correctly made because we need them to keep the cars running and the notch doesn't bother me. What bothers me is doing a FI unit over because of dirt from a dirty filter or gas tank. John

[Michael H.]

Re: Repro AC GF-90

John,

Sounds like the repro is a repainted silver GF-90 that's been available for decades? Or is this a completely new part made from scratch?

[John D.]

Complete new filter being made. *NM*

[Clem Z.]

do the NCRS black hats carry 240 paper

with them? i would think someone would get a swift kick in a-- if they took some 240 paper to a corvette owners nuts,filter nuts that is.

[G B.]

New Delco GF-90 filters

Michael -

About 3 - 4 years ago Delco changed the dimensions on the GF-90 filter design they sell. The current Delco version has a larger diameter and comes with a mounting bracket made for it. The fitting nuts have Godless metric outside dimensions. You can rework the bracket to fit on an old FI Corvette, but the new Delco canister will always look different from an original GF-90.

Jerry

[Michael H.]

Re: New Delco GF-90 filters

Thanks Jerry. Guess I've been away from this stuff for too long. I wasn't aware of the change on the filter.

[John H.]

Re: GF-90 Fuel Filter for 1963 Z06

Verne -

Both the Dobbins book and Noland's book have several photos of '64 L-76 top ends, with and without the air cleaner in place.

[Verne Frantz]

Thanks! Forgot to look there....duh! *NM*

[John D.]

Re: New Delco GF-90 filters

Michael, Jerry is certainly right about the AC current replacement filters. They look like they came from a GMC or Chevy truck and are about the same dimesions except they have the small 5/16" fittings. Also come with a huge heavy duty bracket that you see holding up electric conduit in a commercial bldg. I ordered a case from a dealer and he wasn't too happy with me when I say they weren't even close. I bought one to show my friends how ugly they are. They would work on a '62 driver as that filter is hanging in mid air but I wouldn't want one on a mid year unless it was a '63 converted into a pickup truck like the one in Mobile. John