L134?

Can anyone tell me what the difference is in a 3a motor and a M38? I found a couple flatheads I'm going to look at them tomorrow and there is one of each.
Thanks
Keith

 

M38 will be 24 volt and have all waterproof distributor and a slightly diferent intake manifold and carb.
3A motor will be 6 volt and most likely have a Fram body oil filter at the passanger side front of the block.
Pics would help to tell you the difference.
Donnie

 

Thanks for the reply. I'll get some pics when I go up there in the morning. I was wondering if there was anything that made one more desirable than the other.
Keith

 

best way to tell is an m38 motor will say MC or RMC ###### on the flat spot between the water pump and the head. As M38 will have a double grove pully on the water pump and crank.

 

Well I brought home the 2 L heads today. The M38 motor looks great and the 3a motor doesn't look bad. It still has the trans and transfercase attached along with xmember and skidplate. So hopefully I will have a th350 and AA adapter for the D18 for sale soon. Going to go back to original on the 2a.
Keith

 

what is the number on the m38 engine? Did it come with an 24 volt parts?

 

I can't read the numbers behind the waterpump. The only numbers I can find are SD 908-56 11A on the lower right side. And 11A 2D on the left. There is also a tag on the lower rear left side that has 4 1B F on it. Unfortunately it has been converted to 12v.
Keith