Will a 1970 GTO Tack fit in a 1969 Beaumont

1969 Beaumont L48 · Veteran Member

Will a 1970 GTO Tack fit in a 1969 Beaumont

SD 396 · Poncho Master!

Yes it will fit. Not for HEI

dualquadpete · Canadian Poncho Superstar!

I don't see why it wouldn't work on HEI as the dist. has place for tach. wire. I've used same after mrkt. tach. on reg. coil & HEI w/no problems!! All it's doing is "reading" the pulse !!!!!!!!!!!!1

1969 Beaumont L48 · Veteran Member

Thats great that it will fit and work in my car. Thanks for the feed back.

This tack will look better than one hanging on dash. Also will keep car looking more original.

4SPEED427 · A Poncho Legend!

I think it will work with the HEI but I am told that sometimes the HEI's fry the factory tachs after they have run for a while.

dcneric · Poncho Master!

Original hood tach's absolutely will not work with HEI. I used an in dash tach from a 69 in my 70GTO but used the original points distributor. So I can't say for sure that it will or will not work with an HEI or aftermarket electronic distributor conversion. However my hunch is that an original in-dash tach will not work with HEI.

dualquadpete · Canadian Poncho Superstar!

Changed my 64 Catalina over to "electronic" ign. conversion [use the same cao etc.] using the same tach. I had with Points set up!!! Sun pro Tach in 52 showed wiring for Points, & HEI no wiring changes, just hooked the wire that was going to external coil, to teminal on HEI that says "TACH" I know a few people that are running GM tachs. from the 60's on HEI's mostly the consol or OEM on mid 60 Pontiacs

chader · Guru

So can you make the factory tach work with hei?

4SPEED427 · A Poncho Legend!

It will work Chad but I know someone with a Beaumont once told me that after a while of having it hooked up to an HEI the tach died. Not sure that it was proven to be the problem but it appeared to be HEI related.

SD 396 · Poncho Master!

Carl Stevenson wrote:
It will work Chad but I know someone with a Beaumont once told me that after a while of having it hooked up to an HEI the tach died. Not sure that it was proven to be the problem but it appeared to be HEI related.

Exactly why I didn't suggest using it. I use my factory tach with a stock distributor and coil with a Crane module installed. Works great, with the benefits of electronic ignition.

poncho62 · Poncho Master!

I seem to remember that the Sun Super tachs would not work with HEI, but the Sun Super tach 2 would........I think I would check into it some more before trying to use a 1970 factory tach with HEI