63 L76 Choke Tube Finish

[Andy S.]

What is the correct finish for the 63 340 L76 choke tube, natural or chrome? Thanks in advance.

[Edward J.]

Re: 63 L76 Choke Tube Finish

Andy, my Mar 63 is chrome.

[Andy S.]

Re: 63 L76 Choke Tube Finish

Thanks Edward. My 63 July car is also chrome but the judging manual says it should be natural steel. This is why i posed the question. Anybody have an answer for this ? Is the JM wrong?

[Loren L.]

Re: 63 L76 Choke Tube Finish

Winter Edition JG 1994, 2nd Edition: "The L76 tube is chrome plated.".
6th Edition, 2nd printing, changes to "...except the early L76 that is chrome plated...", pg 86.
L75/6 AIM, sheet 3 (dtd 11/23/62) shows "3825912 Pipe Assy" as L75 and "3834123 Pipe Assy" as L76. Must be some sort of difference.

[Andy S.]

Re: 63 L76 Choke Tube Finish

Thanks Loren. Yes, i have 6th edition, 1st printing that states "The upper choke tube is natural steel on all, except the early 1963 L76 engines that is chrome plated, ...." So, i take this to mean that my late production (July) car should have a natural steel tube. Do you agree? Anyone else? However all the supply houses show a chrome tube for all L76 production. Thus my dilemma.

[Loren L.]

Re: 63 L76 Choke Tube Finish

Go back to the 6th Edition (mine is 2nd printing) for yet another question - on page 89, "Early '375' models may show variations....includes, but is not limited to, lack of chrome plating on
the front balance tubes, ...fuel lines, ...oil filler tube...". I agree with this lack of chrome plating on early FIs; I have a HARD time making it jibe with CHROME on early L76s and not late, so I guess I would NOT agree with natural steel on your car. Perhaps the JT can delineate where we went from ALL chrome to just EARLY chrome?

[Andy S.]

Re: 63 L76 Choke Tube Finish

I agree and thank you for your insight. It appears that the JG is quite vague on the issue. I plan on keeping the chrome unless convinced otherwise.

[Edward J.]

Re: 63 L76 Choke Tube Finish

Andy, I have seen many 63's and have yet to see a L-76 without the chrome choke tube, I am not sure about the way the current JM spells it out. I would agree with Loren may be early cars were Natural.

[Harry S.]

Re: 63 L76 Choke Tube Finish

As far as I know all early production 63's used a non plated/plain choke pipe and plain brass fitting. I do not know the cutoff.

[John D.]

Re: 63 L76 Choke Tube Finish

If the car had fuel injection here is what is typical. The early '63's had a bare steel tube line. The later cars had a chrome one.

Andy. Since your car is July it would most definitely have a chrome choke tube. At least the FI cars in July would have a chrome tube.
Original tubes are magnetic. Chrome plated steel. Older repros were chrome plated stainless and that will give you a deduct. John

[Andy S.]

Re: 63 L76 Choke Tube Finish

Thanks to all for your help. It appears that the JM is wrong and late L76 cars are chrome plated steel.