Mach1 Driver

Impressive!

A few months ago RPM talked about cutting the flange on his headers to allow the tubes to flex individually. I realize I'm showing the passenger side, and you wouldn't cut the gasket too, just the flange, but you get the idea. That last tube isn't going to bend on these shorties with the collector right there so you may need to free up the others to get some wiggle room when they get hot. Hopefully Bob will show the picture of his fix and discuss the results (it was probably done to a different brand of headers though). I suspect that cutting the flange would be your last resort and an expensive experiment, but if nothing else works....its the old problem of the unintended consequences of aftermarket designs and parts.

I want the stock look with the Sniper hiding below, and I know a 4150 Sniper is wider than a 4 barrel carburetor, but nowhere does it give a spec. It’s one of those things that I don’t want to be surprised about after I buy the dang thing. I have a 69 with a 351W and I’m wondering about the air cleaner banging into the linkage or top corners of the Sniper. The air cleaner is 5-1/8 as is the air horn on a Sniper so at least that will fit. And it will fit height wise under the hood with a stock 4 barrel manifold or an Edelbrock 2181. Did you have an overly sensitive throttle? Holley sells a throttle extension lever to make the pedal less sensitive, but that could cause more problems. I’m hoping someone has tried this and will please relate your experience. Thanks

Thanks, please let us know how that sounds

Yep that is showing a splice

If you have a 1969, then there is a wire diagram in the How Tos section below, also a Schematic, posts #1 and #11 in the list. Black with red wire 385 goes from the flasher to the turn switch, supplying power to any four of the corner bulbs. That's where it is getting the power to the short. But no black or brown wire is shown on the wire diagram going to the turn signal switch, shown on pages 2-E24 and 25 of the diagram, or page 3 of the schematic. Schematics don't show wire numbers- they are meant to simplify the circuit so you can understand it, while wire diagrams actually show the wire routing, plugs, colors and wire numbers and how the car is actually wired.

Ha, I am so over that color- its gotta go

I would give National Parts Depot a call, they have various types listed, some for 65-70, some just 69-70, one for big block cars...

OEM style wiring (old style fuses) or Aftermarket with new style fuses and relays? 69 or 70? Did you see anything shorted or burned when you removed the turn switch (where the smoke was)?

Ron, out of curiosity, why are you bypassing the pink resistor wire- because you are adding Pertronix or something else?

Thanks guys, it was "decision tree" time so I could get a clear direction of how I wanted to build the car. One thing influences another, and so on. EFI won out slightly over a carburetor A transverse muffler won out over individual dual mufflers, because it is quieter A stock fuel tank and Holley 12-305 return-less pump is OUT because the EFI can't handle the heat from a transverse muffler affecting fuel temperature A Holley Sniper EFI Conversion Fuel Tank is IN because it allows the use of EFI and a transverse muffler. Now if I don't change my mind....

In a recent post “Trunk wiring routing” some very interesting facts about dual mufflers were discussed, most of which were new to me because my 69 Mach1 has one big honking original single muffler. Yes it still has the Ford logo, and all the associated parts. I will be changing to dual exhaust so I'm always interested in knowing the changes between the two. In the trunk wiring thread “stangs-R-me” brought up the fact that the 70s had some dual mufflers in front of the axle, while the 69s only had them transversely mounted. Since the transverse muffler is mounted on its side between the pumpkin and the fuel tank, it has special wiring to keep it clear of hot exhaust parts. Problem ONE is that I want a quiet car in which my wife will want to go for a drive and in which we can have a discussion without yelling, enjoy the radio, etc. Problem TWO is that I probably will switch to EFI and my current best fuel pump option is a Holley 12-305. This is an in tank pump and regulator that has no need for a return line and also has a hydromat and fuel sensor that all fits neatly into a stock tank. It’s down side is that it has four wires going into it instead of one, and the fuel inlet seems to stick up slightly more than the stock one, which could make it problematic with a transverse muffler right next to it. So why not avoid the potential issues and change to 70 style dual mufflers in front of the axle? I have both 69 and 70 Part and Body Illustration Manuals and they show the part numbers, but I could find no on-line reference to the DOZZ-5230-E&F, D&B, J&C, OR G&H mufflers so it isn't possible to find pipe and muffler size. I think the challenge in using a 70 system is finding one that is close to authentic. Everyone that makes a muffler has a system and they are all probably too loud. So my first question is for RPM- Bob you used a Walker Quiet Flow 21856 which is 19 x 4-1/4 x 9-3/4 with 2-1/2 pipes (edit, make that 23 instead of 19). I know you have side exit exhausts, but do you know whose pipes would position that muffler in the stock brackets, then exit up over the axle and out the back? Anyone else have suggestions? We are talking quite here guys, not Magnaflows.

You are correct, we are getting off track, and maybe I should start another thread. Thanks for the info, I wasn't aware that the 70 had dual mufflers in front of the axle as well as transverse. I have both 69 and 70 Part and Body Illustration Manuals and they do show this with part numbers, but I could find no on line reference to the DOZZ-5230-E&F, D&B, J&C, OR G&H mufflers so it isn't possible to find pipe and muffler size. I think the challenge in using a 70 system is finding one that is close to authentic. Everyone that makes a muffler has a system and they are all too loud. At least the transverse system is reproduced and has a period correct tone that isn't so loud that it will drive you nuts.

Fantastic detail Doug, thanks. I'm still undecided if I will go EFI or Carb. If I go EFI, I like the Holley 12-305 pump assembly but the fuel connection appears to stick out a little more than the stock version, maybe causing a problem. Aslanefe, didn't you use the 12-305, but do you have a transverse muffler??

Jay, do you have the stock 2-1/4 dual exhaust with the resonators up front and the transverse muffler positioned on edge between the pumpkin and the fuel tank? I've often wondered how close that gets to the sender wire, but it makes sense that there would be less exposure to the muffler coming out the center than running across the tank from the side.

Mid, thanks for the heads up on the fuel line for dual exhaust. My car has it in the center and it is a single exhaust Mach1. I will be changing to dual exhaust so I'm always interested in knowing the changes between the two. I was surprised to find out that the passenger side rear leaf spring shackles are different for a dual exhaust car (among other hanger brackets and things). Apparently the shackles are only available through Eaton Springs, as he had them specially tooled.

Sorry about that, my son still hasn't gotten around to looking at that. For some reason he puts his work before mine- the nerve of him! Here is a shot of the wire routing using the snipping tool. I show the Cougar version first because it is the only page that has the fuel sender wire that Mid mentions in the post above: Cougar 2-E14 interior lights, clock, cigar lighter, but shows fuel sender wire Mustang 2-E22 exterior lights, clock, cigar lighter. No fuel sender wire shown

I'm still undecided and flop back and forth between using a Carb or EFI. If I switch to a new carb it will be the M2008, and your postings will make a great difference, Thank You. Since you've been running it for three years now, do you regularly use gas with ethanol, and has it affected anything yet? My old 2V has always stunk up the garage for 4-5 days after driving it- until the gas has dried up in the bowl. At first I thought the smell was from the lawn mower, but after we moved to a house with an attached garage it was clear it was coming from the car. My wife calls it "Old Car Smell", and won't drive in it. It must have a leak but I've never been able to find it even with long duration bench testing. My primary reasons for changing to EFI would be to get rid of the smell, easier cold starting, and self tuning. I'm a little surprised at your low gas mileage- anything special going on with the cam or compression ratio? What would you recommend: Carb or EFI?

Alignment Specs from Open Tracker Racing for power steering: Caster: +2.5 to +4.5° for power steering Camber: 0.0 to -0.5 Street, Street Performance -0.5 to -1.5° Toe: 1/8” Camber distributes load across tire face Caster causes wheel to align with direction of travel. More makes it harder to turn, but OK for power steering. You would want less for manual steering. Use same numbers on both sides of car for camber and caster

Thanks Dave, I'm working on it, but had a few setbacks. I much prefer the days when I was young and invincible... and too dumb to know better.

Mike, I don't know if this will help, but its a link to my Google Drive. Among other things it has a very detailed wire diagram that is Ford approved and 30+ pages. You want page 2-E22. The only reasonable way for people to view high resolution files is if they are saved as a pdf. However, the pdf in this ancient software can only output in portrait mode. Since most of the drawings are in landscape mode, I had to rotate them 90° prior to saving as a pdf. Just print the page(s) wanted and you will have a full landscape size pdf. Sorry for the inconvenience. Here is the link: https://drive.google.com/drive/folders/10FqYlsGT1XXr8B5TCF9WAASkU4vdPtuJ?usp=sharing I would take some pictures of my trunk wiring but I just had two procedures done to my nose to aid in breathing (kinda important), and I'm just not up to it yet. If no one responds in a week or so I should be able take some pictures at that time.

I see that the American Graffiti Festival is going up in a week in Modesto

Its amazing how the memory works. A few words and you can replay the whole thing in your head.

I tried to come up with a quote from Bullitt, but then I realized I didn't really care about the dialog and just wanted to watch the car chase again; https://www.google.com/search?client=firefox-b-1-d&q=bullitt+car+chase&bshm=nce/1#fpstate=ive&vld=cid:467a988d,vid:no7XR7s8Z7o

American Graffiti?