Vintage Mallory Adj. Proportional RPM Limiter - Page 2

**outlawperformance** · #11 06-02-2023, 02:44 PM

This is in my 1969 Z28 on works perfect.

**outlawperformance** · #12 06-02-2023, 02:47 PM

NOS going my 1966 Biscayne.

**outlawperformance** · #13 06-02-2023, 02:48 PM

In the Biscayne and works perfect!

**GaryC** · #14 06-02-2023, 03:50 PM

Thanks Pete for the pics and the links. Much appreciated. I did see the instructions that Kurt posted while researching this, but needed the verification to be sure. The manual link didn't show the 28770 as you said, but the 642, 43, and 44 was there. Curious if these units would be considered the same as the 28770 in form and function. I need to read installation on both and compare.

One question needs answering though. Is the 28770 compatible with the HEI? I still have my points distributor, but currently I've been using a Dave's Small Body HEI for a decade or more, and the original factory tach, which was MIA when I bought the car, I replaced with a reproduction unit which works perfect with Dave's SB HEI.

Any thoughts there?

Thanks for the pics from OWTLAWPERFORMANCE. In the 'glove box' keeps the interior looking stock and out off view. We had a friend that had one in a 66 Nova under the dash. When we were out and about we use to "F" with him and adjust the dial back a few thousand. He never look looked at it when he got back in the car...and the fun started there. He was a good egg though. Yours looks right at home in the Biscayne next to the gauges, but the Camaro with the console gauges doesn't have the same space and I want mine seen. So, I'm looking at location ideas.

One more question, where is the box going to be installed? On the engine side of firewall or inside under the dash. The 28770 states close the coil.

Gary

**outlawperformance** · #15 06-02-2023, 06:23 PM

Quote:

Originally Posted by GaryC

Thanks Pete for the pics and the links. Much appreciated. I did see the instructions that Kurt posted while researching this, but needed the verification to be sure. The manual link didn't show the 28770 as you said, but the 642, 43, and 44 was there. Curious if these units would be considered the same as the 28770 in form and function. I need to read installation on both and compare.

One question needs answering though. Is the 28770 compatible with the HEI? I still have my points distributor, but currently I've been using a Dave's Small Body HEI for a decade or more, and the original factory tach, which was MIA when I bought the car, I replaced with a reproduction unit which works perfect with Dave's SB HEI.

Any thoughts there?

Thanks for the pics from OWTLAWPERFORMANCE. In the 'glove box' keeps the interior looking stock and out off view. We had a friend that had one in a 66 Nova under the dash. When we were out and about we use to "F" with him and adjust the dial back a few thousand. He never look looked at it when he got back in the car...and the fun started there. He was a good egg though. Yours looks right at home in the Biscayne next to the gauges, but the Camaro with the console gauges doesn't have the same space and I want mine seen. So, I'm looking at location ideas.

One more question, where is the box going to be installed? On the engine side of firewall or inside under the dash. The 28770 states close the coil.

Gary

Gary,
Both of mine are mounted under the glove box attached to the liner. The box weights nothing so no concerns supporting it. All wiring is under the dash except the one wire running to the coil.

**GaryC** · #16 06-02-2023, 07:20 PM

Thank you...

So it's really not necessary to install in the engine compartment. I like that.

This all hinges on if I can use it with the small body HEI or if I have to use points.

On the instruction sheet, it indicates 'connect to points' ?? Also, where are you taking power from for the red wire on the three strand bundle? I like the heater power wire idea shown on the instructions, but I'm open to ideas.

**outlawperformance** · #17 06-02-2023, 09:42 PM

Both of mine are electronic on old/vintage Mallory unilite's with original modules. And vintage Accel superstock coils.

**GaryC** · #18 06-02-2023, 10:54 PM

Quote:

Originally Posted by outlawperformance

Both of mine are electronic on old/vintage Mallory unilite's with original modules. And vintage Accel superstock coils.

I like the sound of that. Thank you!

**GaryC** · #19 06-07-2023, 06:57 PM

Quote:

Originally Posted by outlawperformance

In the Biscayne and works perfect!

The unit got here today. Isn't there supposed to be two wire connections on the back of the dial? I only have one.

**outlawperformance** · #20 06-08-2023, 09:27 PM

Quote:

Originally Posted by GaryC

The unit got here today. Isn't there supposed to be two wire connections on the back of the dial? I only have one.

Gary,
I have three of these and all of them have three wires. The box has three wires from the dial and three wires out. Red positive, Black negative, Green tach.
I attached a new dial their plastic on the back now, but same as the same original part number when cross referenced. I hope this helps.

The Following 2 Users Say Thank You to outlawperformance For This Useful Post:
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The Following 7 Users Say Thank You to outlawperformance For This Useful Post:
69M22Z (06-02-2023), dykstra (06-08-2023), GaryC (06-02-2023), NorCam (06-08-2023), olredalert (06-08-2023), PeteLeathersac (06-02-2023), RPOLS3 (09-21-2023)

The Following User Says Thank You to outlawperformance For This Useful Post:
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