55Gary

Tacking onto my post above, MY QUESTION for knowledgeable eyes: Can the stock tachometer be calibrated/adjusted (capable of) for the Ford V8? I've got a '73 240Z, with a 1990 Ford 5.0L High Output motor; and MSD ignition. It's roadworthy, but I'm still connecting the gauges. ___ I've been working with/consulting a shop here in San Diego: "Speedo-Tach", and as they are not fluent in Z, they say they can't tell until they look inside the tachometer. Motorsport's Technical Support guys tell me that folks do it with Chevy's, but he can't confirm for the Ford. (To give you all the info: He also said I'd need the Ballast Resistor...which I no longer have. My mechanic [who did the conversion] disagrees with the Ballast Resistor need) _ I'm not going to break a leg to use the stock tach, but do prefer to. Otherwise, I'll have to go with the aftermarket stuff, which could be a nice thing to do. (I have looked through the forums, and on www.HybridZ.org, but have yet to have this specific question addressed) Your help would be appreciated. Good day.

Sulla, You're probably done by now, but if not, maybe I could provide you with some info from my conversion. Aside from what I have, can see, and found-out in the process, I know little. Also, I didn't do the conversion myself. 1973 240Z. 1990 5.0 Liter High-Output Ford motor (from a Lincoln Mark VII). The differential is from an Infinity Q45, 3.50 gear ratio. I don't know the other names & terms for it. I also have a spare differential out of a 300ZX, which my mechanic tells me will also work. It has 6 hole sprockets, vice 5, so some adaptation will be needed. The engine bay is very spacious, & my mechanic fabricated/welded his own engine mounts. --Hope this helps.

Hello 540Z, In that sense, my name would be 500Z. I've got a '73 240Z, with a 1990 Ford 5.0L High Output motor; and MSD ignition. It's roadworthy, but I'm still connecting the gauges. MY QUESTION: Can the stock tachometer be calibrated/adjusted (capable of) for the V8? I've been working with/consulting a shop here in San Diego: "Speedo-Tach", and as they are not fluent in Z, they say they can't tell until they look inside the tachometer. Motorsport's Technical Support guys tell me that folks do it with Chevy's, but he can't confirm for the Ford. (To give you all the info: He also said I'd need the Ballast Resistor...which I no longer have. My mechanic [who did the conversion] disagrees with the Ballast Resistor need) I'm not going to break a leg to use the stock tach, but do prefer to. Otherwise, I'll have to go with the aftermarket stuff, which could be a nice thing to do. Your help would be appreciated. Good day.