Wideblock or Narrowblock?

johnnyRacer · Post by **johnnyRacer** » Wed Oct 18, 2006 6:07 pm

I was in the yard the other day and ran across these (2) pickups.

1. 1992 Dodge D50
production date 7/92
engine: 2.4 4g64
trans: 5 spd code-R5M21 3909

2. 1987 Mitsubishi pick up
production date 12/86
engine: 2.0 4g63
trans : Auto code-AW372 3909

Which one of these is a wideblock or a narrowlock?

Mike · Post by **Mike** » Thu Oct 19, 2006 1:11 am

7/92 is a wideblock, but also supposed to be 7 bolt... 6 bolt stopped in 5/92, but i would check it out just to make sure. 12/86 auto 2.0l could be a narrowblock or wideblock. I don't know anyone familiar with the auto transmissions to say for sure, so the best way to tell is to measure the 2 lower bellhousing bolts. 12.25" = narrow block. 13.25" = wideblock

Bill Hincher · Post by **Bill Hincher** » Thu Oct 19, 2006 2:11 pm

kane,

I couldnt help noticing how big those two coolant holes are in the back of the block and absent from the front, do you have a close up of the cylinder head arraingment?

Bill

Post by **DJpowerHaus** » Thu Oct 19, 2006 3:16 pm

Mike wrote:7/92 is a wideblock, but also supposed to be 7 bolt... 6 bolt stopped in 5/92, but i would check it out just to make sure. 12/86 auto 2.0l could be a narrowblock or wideblock. I don't know anyone familiar with the auto transmissions to say for sure, so the best way to tell is to measure the 2 lower bellhousing bolts. 12.25" = narrow block. 13.25" = wideblock

It didnt switch over in 92, it switched over mid 93. That 92 should be a wideblock 6 bolt. I always heard that the 2.0L Autos were wideblocks. Manuals were narrow. I'd check both out. Get the 2.4 definatly and probably get the 2.0 if its a wideblock.

Post by **DJpowerHaus** » Thu Oct 19, 2006 3:19 pm

Bill Hincher wrote: kane,
I couldnt help noticing how big those two coolant holes are in the back of the block and absent from the front, do you have a close up of the cylinder head arraingment?
Bill

They look the same as the ones photographed and compared here:

4G63 Head | 4G63 Gasket | 4G64 (SOHC) | 4G63 (DOHC)

Bill Hincher · Post by **Bill Hincher** » Thu Oct 19, 2006 4:20 pm

They may be covered with oil but I dont see any holes in the front of the block that match up to the headgasket