MSD 83647 Digital HEI Module for GM

$ 127.95

Score By Feature

Based on 27 ratings

Satisfaction

8.79

Value for money

9.20

Packaging

9.15

Giftable

8.79

OveReview Final Score

How Our Score Is Calculated

Product Description

This device can be quickly and easily installed in non-computer controlled housings (4-Pin)

Questions & Answers

Is this going to help with the Are you in need of an ignition coil from MSD?

The engine runs more smoothly, especially at high revs because of the improved ignition. A simple way to limit the rpm is by using the rev limiter function. Currently I am not using a MSD coil, but I have in the past. It will work with other coils too.

How did you come to be in this country?

For more information, please contact MSD at (915) 855-6816

Would this be a replacement for the Whether it will work with a 6AL box if so. ?

It replaces the 4 pin modem. Not sure if the 7 pin function will work. Additionally, this will not work with 6AL boxes. As with a msd box with rev limiter, it performs the same functions

How did you come to be in this country?

For more information, please contact MSD at (915) 855-6816

Selected User Reviews For MSD 83647 Digital HEI Module for GM

Having tested my truck's wiring and electrical system, I know with 100% certainty that it is in good condition

3/5

Unfortunately, these units do not meet my standards of reliability. In September 2015, I ordered one of these, but it died after a short period of time. We had it serviced as part of our warranty. I wasn't able to drive my truck while this was going on. This forced me to order a second August 2016 (Buy). The installation of that one was completed. Sadly, that person is also dead two years later. As for the first one that had been "fixed", I won't worry about installing it. I hold a degree in electronics and have been working as a computer technician for 24 years. Having tested my truck's wiring and electrical system, I know with 100% certainty that it is in good condition. They are not reliable enough for me to rely on them.

Aaliyah BIRCH

| Dec 03, 2020

It is a sleeper distributor

5/5

Adding spark reliability, even at high RPM, without having to invest heavily in a full Multiple Spark Discharge system, is a great advantage. Although it still retains the look of a standard HEI, it has some very good features. While the idle mixture was right, there were still a few misfires every now and then, but this seemed to help clear them up nicely. A revised version of The rev limiter function is very easy to use and can help prevent overrevving that could damage the engine. In general, I found that there was a lower incidence of The end throttle response is better and the miles are a little better! As a percentage 1 gallons. During the time I have been using it, it has been easy to install and has not given me any issues at all. As a customer, I am happy.

Alyssa Caldwell

| Oct 01, 2020

My only complaint is that I have no complaints whatsoever

5/5

It hasn't let me down running it hard for a few months now. I put it on my Ford 302 and it works great. Revs may even be a bit higher than with the old setting, and the rev limiter works well and is fun to set at different rpms.