GM alternator on 37 engine

[mrtexas]

I have a 37 engine in my 36 woodie. I am trying to put on a GM alternator. I am finding the bracket mounts the alternator 1 1/2inches higher than the generator and the adaptor pulley is also 1/2 inch smaller than the generator pulley. This requires at least 1/2inch spacer under radiator to have fan clear radiator and I know this will throw the hood way out of alignment. Someone must have done this before?

Photo show the center line of alternator 1 1/2 inches higher than center line of generator

 

[tiquer]

Unless your running a large amount of electrical componets I would change the 6-v gen. over to 12 and use it. Might be be better than changing the rad,hood etc. Just my 2 cents

 

[Dave/Green Bay]

Or another option is from 37 coupe.

"Ed Whitney does this,he is a V8 Club member and advertises in V8 Times. He actually only uses the front and rear ends of your generator and uses a new machined aluminum case. The alternator will be a new one I believe,6 or 12 volt positive or negative ground,internal regulator but send your cutout he installs it for original look. 8612 Kendor Dr. Buena Park,Ca 90620. Ph. (714) 773-1611. I have been using a 6 volt positive ground one on my 37 for 4 years."

The diameter of the housing is a little larger than original but you have to look close to see. Keeps more to the original look. Dave/Green Bay

 

[cmbrucew]

MRtexas
You might look at some imported alternators with smaller outside diameters.

Bruce

Works good
Lasts long time

 

[Charlie Stephens]

Unless your running a large amount of electrical componets I would change the 6-v gen. over to 12 and use it. Might be be better than changing the rad,hood etc. Just my 2 cents

Tiquer has the best suggestion. Other than that is your manifold the one with the lowest generator mount available? How about a picture and/or some measurements.

Charlie Stephens

 

[richard crow]

i have a 36 with a 6v pos ground alt sold by the a man in ohio no fiting proulbem uses orignal mount & pully

 

[Ed Pitts]

You just have to use a shorter fan belt. NAPA 22545 will work. This uses the fan mounted pulley from Speedway and it fits just fine under the radiator top.

 

[Ed Pitts]

Here's some pics.

 

[mrtexas]

Tiquer has the best suggestion. Other than that is your manifold the one with the lowest generator mount available? How about a picture and/or some measurements.

Charlie Stephens

Here is a shot of the intake. The generator mount looks high to me. Are there ones for a 21 stud that are lower?

 

[39portlander]

Certified auto electric has the FORD alt/brackett for flatheads. Having a GM alt in a ford when a FORD option is available makes more sense to me. Can post pic's of my install if you need Mr. T

certifiedautoelectric.com check em out

 

[deuce lover]

I would certainly consider the EJ Whitney conversion.I have had him do 2 for me.Here it is on my 36 coupe.Does not look out of place like the GM alt does.Apologize for the interior shot I put in by mistake.

 

[Lawson Cox]

Use an intake from a 37-39 which has a shorter neck for geneerator mount, and you shouldn't have any problems. The one you are using us for 35-36 and is too tall for your application.

 

[mrtexas]

I would certainly consider the EJ Whitney conversion.I have had him do 2 for me.Here it is on my 36 coupe.Does not look out of place like the GM alt does.

They are nice but at $450 too expensive for me and too long of a wait at 6 weeks. I don't care about "GM looking out of place." I don't intend to open my hood for anyone who can tell the difference. I can buy a rebuilt GM alternator for $45.

 

[Ed Pitts]

Here is a comparison between the 46-48 intakes and the earlier aluminum intake.

 

[mrtexas]

Here is a comparison between the 46-48 intakes and the earlier aluminum intake.

This will solve my problem. Thanks for all the comments.

 

[mrtexas]

https://sites.google.com/site/mrtexascitrus/home/36fordintake

 

[BrianCT]

There are original late 30's aluminum manifolds too.